<![CDATA[NBC 10 Philadelphia - Philadelphia Weather News and Coverage]]>Copyright 2016http://www.nbcphiladelphia.com/weather/stories http://media.nbcbayarea.com/designimages/NBC10_40x125.png NBC 10 Philadelphia http://www.nbcphiladelphia.comen-usSun, 26 Jun 2016 00:56:14 -0400Sun, 26 Jun 2016 00:56:14 -0400NBC Owned Television Stations <![CDATA[Today's Forecast]]> Fri, 24 Jun 2016 16:01:51 -0400 http://media.nbcphiladelphia.com/images/185*120/Glenn_schwartz_sheena_parveen_1.jpg

We have another great, sunny and warm weekend on tap, with low humidity for late June. Moisture will increase early next week, leading to some showers and t'storms. Another round of showers could move in by the start of 4th of July weekend.

Sat: Sunny and warm. High 86

Sun: Sunny and hot. High 87

Mon: Partly sunny and warm. High 88. Chance of showers west

Tue: Partly sunny with scattered t'storms. High 88

Wed: Partly sunny. High 86

Thu: Mostly sunny. High 85

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<![CDATA[July 4th Weekend Forecast]]> Fri, 24 Jun 2016 21:55:20 -0400 http://media.nbcphiladelphia.com/images/213*120/Philly+Hot+Sun_19898880.jpg


We’ve already seen some great weather on weekends this summer. The past two weekends have been near perfect (although a bit on the hot side). No rain; lots of sunshine; low humidity for summer. And the upcoming weekend will make it 3 in a row. Not a drop of rain. 

The pattern is straight-forward. Upper-air maps for Sunday morning show a strong ridge of high pressure from Mississippi to New England. Higher pressures than average are colored in red. 

This leads to high pressure dominating the Eastern U.S. at the surface:

Once again, the red areas have pressures above normal. The reddest colors are right over our area, indicating HIGH pressure practically overhead. That means not much wind, lots of sunshine, and low humidity. So this weekend is a “slam dunk” (in honor of the Sixers new, future star). 



SATURDAY 86 76 (Ocean 65 degrees)

SUNDAY 87 76

Onshore breezes each day 


It may not turn out to be bad, but next weekend is not likely to be a repeat of this one. We’re talking about days 8, 9, and 10 of our 10-Day Forecast, so it’s still pretty far out. But there are some general clues emerging. 

Any longer-range forecast has to start with a look at the upper levels of the atmosphere. Computer models do a much better job with them than any kind of surface forecast. Sometimes, the models show a high level of confidence in a certain type of overall pattern. That pattern doesn’t look very much like the one for this weekend. 

Here is an upper-air map, similar to the one at the beginning of this blog. See if you notice the clear differences: 

This is the same computer model, predicting pressures at “500mb” (about 18,000 feet up), which is the standard level meteorologists use for this type of forecasting. Instead of that HIGH pressure ridge in the Eastern U.S., it is now centered over the Rockies. Lower pressures are in the East. 

This is an “ensemble” forecast map, meaning it’s the average of many separate runs of the same model. It tends to smooth things out, especially farther out it time. But for a forecast 9 days out, it’s a pretty obvious solution. Other computer model “ensembles”, including the world’s leading European model agree on this basic pattern. 


It’s obviously too far out in time for a clear-cut, detailed forecast for 4th of July weekend. But……. 

1. It will not be a “super-hot” weekend. Highs in the 90s are unlikely

2. It will not be a “super-sunny” weekend. At least one of the days (Saturday, Sunday, Monday) should have more clouds than sun

3. There should be at least some rain during that period.

4. It’s unlikely to be a cool, “washout” weekend with a persistent east wind

5. Any tropical system that develops in the Atlantic during the week would NOT be able to come up the East Coast. 

It’s too early to get confidently more specific. That will come as we get closer to next weekend.

Photo Credit: NBC10- J.R. Smith
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<![CDATA[So, It Wasn't a Tsunami Off Jersey Shore, Delaware]]> Thu, 23 Jun 2016 13:20:04 -0400 http://media.nbcphiladelphia.com/images/192*120/Meteotsunami+Cape+May.JPG

What the National Weather Service initially called a weather-related meteotsunami off the coast of the Jersey Shore and Delaware during severe storms Tuesday afternoon actually wasn't a tsunami after all because it didn't go far enough.

"A meteotsunami, like all tsunamis, is a propagating wave train," said said U.S. NWS Pacific Tsunami Warning Center in a Facebook update. "While the sea-level anomaly shown in the figure did show up on other nearby tide gauges, it did not advance far beyond the mouth of Delaware Bay. In particular, it did not reflect from the shelf edge to come back to threaten the coast in the manner of the meteotsunami of June 2013. Since it did not propagate far, we cannot call the event a meteotsunami." [[383978851, C]]

The peak of the event occurred right around 3:15 p.m. Eastern Standard Time and caused water levels to drop to around 0.5 meters, said the Honolulu, Hawaii-based Tsunami Warning Center.

So what’s a meteotsunami?

"A meteotsunami is generated when a high-speed straight-line windstorm (usually called a de recho) passes over shallow water," wrote the Tsunami Warning Center on Facebook. "The speed of a tsunami in deep water is hundreds of km per hour, but in shallow water it's much slower. If the water depth is 20 meters (as it is off the mouth of Delaware Bay), the tsunami speed is only 50 km/h. A low-pressure atmospheric system traveling at 50 km/h (or sustained winds of 50 km/h) can therefore kick up a "tsunami" (the process is called Proudman Resonance). So you can get a tsunami-like phenomenon generated not by an earthquake but by weather. We call these things meteotsunamis."

A similar meteotsunami along the Jersey Coast in 2013 impacted coastlines up and down the East Coast.

This time the incident, which the National Weather Service said was part of an "interesting" weather day, didn't make significant landfall.

"The waveform in the figure may simply be the result of wind piling up water down Delaware Bay," said the NWS. "It clearly was a weather-induced long-wavelength phenomenon, but, unlike 2013, those waves were not the result of Proudman Resonance across the continental shelf (the atmospheric pressure record from Cape May shows a broad pressure pulse coincident with the waves rather than what was seen in 2013: a pressure pulse preceding the waves by more than an hour). The source area of this event appears to have been too small to sustain a tsunami; the waves rapidly dissipated."

Click here for more about potentially dangerous meteotsunamis. [[384037711, C]]

Photo Credit: US NWS Pacific Tsunami Warning Center
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<![CDATA[DOWNLOAD the NBC10 App for Latest Weather]]> Mon, 08 Feb 2016 22:30:50 -0400 http://media.nbcphiladelphia.com/images/215*120/Follow+Storm+on+NBC10+App.JPG
View Full Story

Photo Credit: NBC10]]>
<![CDATA[Lesser Threat of Thunderstorms]]> Thu, 23 Jun 2016 07:43:05 -0400 http://media.nbcphiladelphia.com/images/213*120/Generic+Rain+Generic+Umbrella+Generic+Rainy.jpg

After a sunny Wednesday the stormy weather returned Thursday but the worst of the storms will likely stay south of the Philadelphia region.

"The further north you go the less likely these storms will be," said NBC10 First Alert Weather meteorologist Bill Henley. "This system has been trending to the southeast as high pressure moved in from the north."

The rain moved into Philadelphia, the immediate suburbs, Delaware and South Jersey after 7 a.m.

"This afternoon there's a chance for some scattered showers, there's a chance we'll see an evening thunderstorm but that's looking less likely now," said Bill.

The threat for widespread hazardous weather was low, said the National Weather Service.

Any heavy rain and thunderstorms will remain mainly south of the Philadelphia area during the morning commute.

High temperatures will struggle to get into the low 80s for most of the area Thursday.

Once the rain moves out, we’re in for lovely weather again with a sunny and dry Friday with highs in the mid-80s. Temperatures will rise over the weekend with highs in the 90s and sunny and dry conditions once again.

"We're looking good through the weekend," Bill said. "Nice at the shore" with temps in the 70s Friday before pushing into the 80s Saturday and Sunday.

Stay with NBC10.com for the latest weather updates.

Photo Credit: NBC10]]>
<![CDATA[Severe Storms Slam Region ]]> Tue, 21 Jun 2016 22:24:17 -0400 http://media.nbcphiladelphia.com/images/213*120/WildwoodStorm.jpg Severe storms and a possible tornado damaged areas in South Jersey and Delaware Tuesday afternoon.

Photo Credit: Madison Amabile ]]>
<![CDATA[Possible Tornado, Severe Storms Slam NJ, Del. ]]> Wed, 22 Jun 2016 12:10:42 -0400 http://media.nbcphiladelphia.com/images/213*120/WildwoodStorm.jpg

Severe storms, lightning, wind and a possible tornado slammed South Jersey and Delaware Tuesday, toppling trees, damaging buildings and leaving thousands in the dark.

The National Weather Service issued a Tornado Warning for Cape May County, New Jersey Tuesday afternoon. At 3:39 p.m., a severe thunderstorm capable of producing a tornado was located over Green Creek, about eight miles north of Cape May, and moved east at 45 mph. The storm moved into Stone Harbor around 3:45 p.m. and Avalon around 3:50 p.m. The Warning was canceled shortly after 4 p.m.

The storms caused widespread power outages, nearing 39,000 at one point. As of midday Wednesday, about 5,000 customers remained without power in Cape May County. Officials say the most impacted areas by the storm were Lower Township, southern Middle Township and parts of Wildwood. They also said about a dozen homes were damaged.

The powerful winds tore off the roof of the public works building in Wildwood, New Jersey during the storm. Several trees also fell in the parking lot of a Home Depot on Indian Trail Road in Middle Township.

"[It was] very loud," said Kristin Jost, the store manager. "Some crashing. Outside the window you could see some lightning."

The winds knocked three heating and AC units out of place on the roof of the store, causing water to leak through. All of the customers got out safely and the store closed early.

"[We] gave them some water and really just worked on calming everybody down," Jost said. 

A large tree also crashed through the Middle Township home of Chris Vasser during the storm. Vasser, who wasn't home at the time, was relieved to find out his two cats were safe.

"That's all I need," Vasser said. "Thank you Lord."

Vasser's neighbor, Bonnie Marks, told NBC10 she was there when the violent storm rolled through.

"It was like a tornado was coming down the street," Marks said. "A big wssssh! I was literally standing there shaking."

NBC10 First Alert Weather producer David Parkinson said a tornado may have touched down in Middle Township's Burleigh community though it has not yet been confirmed.

Despite all the damage, no injuries were reported.

Prior to the Tornado Warning, the NBC10 First Alert Weather Team issued a First Alert Weather Day due to severe thunderstorms that slammed Delaware and South Jersey with winds near 70 mph, lightning, heavy rain and hail.

Another line of storms moved into parts of Bucks, Mercer, Sussex and Kent counties Tuesday night. A Severe Thunderstorm Watch was in effect for all of Delaware as well as Cumberland, Salem and Cape May counties but was later canceled around 10 p.m.

Conditions should clear overnight leading to a sunny and warm Wednesday with highs in the upper 80s.

Stay with NBC10.com for the latest weather updates.

Photo Credit: Madison Amabile
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<![CDATA[Summer Brings Second Heat Wave]]> Mon, 20 Jun 2016 20:14:50 -0400 http://media.nbcphiladelphia.com/images/213*120/Philly+Hot+Sun_19898880.jpg


Summer officially begins at 6:34 PM on Monday. Tuesday will be the longest day of the year with a glorious 15 hours and 1 minute of daylight. Tuesday also kicks off a two week stretch of the latest sunsets of the year, at 8:33 PM. The sun will start setting earlier after July 6th. 

It certainly feels like summer out. Monday is the second straight day above 90 degrees in Philadelphia. One more makes it a heat wave, which is defined as three straight days of 90 degrees or more. We should get there on Tuesday. We’re forecasting 90 in Philadelphia. 


Better than 2/3 of the country is roasting in sweltering temperatures now. Phoenix hit 118 degrees on Sunday, and our sister station in Los Angeles is forecasting 110 degrees in Burbank on Monday. It’s all thanks to a giant High Pressure system located in Utah and a giant ridge in the jet stream that is bringing hot air all the way up to Canada. Fortunately, those ridges can’t live very long and we’ll start cooling down thanks to a backdoor front on Wednesday.

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As we summer begins, don’t forget we’ve already had a heat wave in Philadelphia. That heat wave happened in May! Unfortunately, we’re looking at a hot summer this year. The Climate Prediction Center is giving us a 50% chance for an above average July, August and September, so make sure you’ve got good air-conditioning set up for the summer.

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Photo Credit: NBC10- J.R. Smith
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<![CDATA[Camden City Schools Close Early]]> Mon, 20 Jun 2016 13:15:34 -0400 http://media.nbcphiladelphia.com/images/214*120/camden+High+School.JPG

All Camden City Schools will close at 1 p.m. Monday due to heat.

The district posted notes on its social media accounts and website around 10:45 announcing that schools would be closing.

Temperatures in the area may reach 93 degrees, and an air quality alert was issued.

You can always check and sign up for school closings and delays on nbc10.com.

Photo Credit: Google Street View]]>
<![CDATA[Warm and Dry For Father's Day]]> Fri, 17 Jun 2016 23:54:46 -0400 http://media.nbcphiladelphia.com/images/213*120/WEB-+Forecast+-+23-20-34-15_19876683.jpg It will be warm and dry for your Father's Day, but thunderstorms will usher in the official start to summer. NBC10 First Alert meteorologist Sheena Parveen has your neighborhood forecast.]]> <![CDATA[Glenn's Blog: Weather Apps]]> Mon, 13 Jun 2016 17:08:59 -0400 http://media.nbcphiladelphia.com/images/253*120/App3.JPG


Here’s a trade secret: Most meteorologists hate most weather apps. They are the incredibly popular and wildly misused forecasts that make meteorologists seem less accurate than they really are. Rather than explain it myself, I’ll let one of the nation’s most respected TV meteorologists, Dan Satterfield do it in his great blog.

(It’s better for him to make specific accusations than for me to do it-I have a history with one of the companies mentioned. He also uses a phrase that’s perfect for the subject, but one I couldn’t get past the censors). 


No matter how much computer models improve, human forecasters can still “beat” them. The numbers that come out of various computer models are called “guidance” in our business. The top synonym for “guidance” in the dictionary is “advice”. It’s not the final word. It is a piece of advice to forecasters: “this is what the_____model suggests as the high temperature”, for example. 

Different models will give different “advice”. No model is perfect. Almost all models have some sort of bias: consistently too warm or cold, too fast or slow with fronts, over-developing storms, etc. Then it’s up to the forecaster to take that all into account and make a decision. Statistics show that human forecasters can “beat” the computer models at all forecast periods (tomorrow, next weekend, etc.). So, as Dan said in his blog, you are not getting the best forecast possible when you check out most apps. 

And will those apps get better? Probably not much, if at all. Who’s there to monitor those thousands of forecasts? If a particular weather model is used for the app, it will make the same mistakes OVER & OVER. The main U.S. model, the GFS, has had a bias of being too cold the farther you go out in time. It also takes a current extreme weather pattern and forces the numbers to get closer to average after about 5 days. All the time! And it’s been making the same type of mistakes for more than 20 years! 

Wouldn’t it be great if there was a way to get around the idea that your possibly favorite forecast was straight out of a computer? There is! And we have it! 


OK, so what’s so different with our app? I’m happy to tell you, especially because it is so much work to do what we want to do. Like other apps, we get detailed, automated forecasts for all parts of our area via our weather partner, The Weather Company (formerly WSI Corporation). Those forecasts are known as “default” forecasts. If we’re too busy with tornado warnings, for example, the automated forecasts will go out to nbc10.com and our app. But that happens less than 1% of the time. 

On a normal day, we write down the “default” forecast from The Weather Company for Philadelphia. We also write down the forecasts from other computer models, including the most accurate in the world overall, the European. We have exclusive rights for some of the data from the European that shows what their “advice” is for the high and low temperatures and precipitation chances for each day. Then, based on an understanding of each model’s biases, and with many years of forecast experience, we change the “default” numbers to our own. We go out to 10 days. That forecast goes immediately into nbc10.com and our app. 

That’s for Philadelphia. That is not where it ends-it’s just the beginning. We then make similar adjustments to FIVE other forecast areas: PA suburbs, Lehigh Valley & Berks, inland New Jersey, the Jersey Shore, and Delaware. Below is a map of our forecast breakdowns, so you know which area you live in (or travel to). 

So, now we have in effect made 45 forecasts: 10 days for Philadelphia, and 7 days for 5 different areas. 10+35=45. But we’re not done. If we want to truly call it a “Neighborhood Forecast”, we have to go into more detail. We then chose 3 different neighborhoods from each area. 3x6=18

Our simple math is: 45+18=63 

Yes, we do make 63 separate forecasts EVERY DAY. We try to figure in the effect of sea breezes, fronts that only affect parts of our area, the “urban heat island effect” of Philadelphia, the cooler, sandy soils in New Jersey, the effect of east winds on the higher elevations North and West of Philadelphia, etc. Sometimes a couple of degrees will mean the difference between rain and snow, and those differences will show up in our Neighborhood Forecasts. There are times when the forecast numbers will be close, but other days (especially in winter) where you’ll see 20-30 degree spreads across our region. Of course, our forecasts won’t be right all the time. We can’t be perfect-but we can be the best. And we strive for that every day. 

This process takes hours, and a lot of concentration while the phones are ringing, promos are taped, and on-air graphics made. The web people are asking for a blog on the coming storm. The producers want to know whether the weather is important enough to be the lead story. The promo people want us to tape something for the 4pm news. Reporters want to know if lightning will affect their live shots, and we often check any scripts of weather-related stories for accuracy. 

We can’t make those forecasts earlier in the day. We have to wait for the latest computer model data. So, for example, the period from 2-4 p.m. is constant, detailed, high-pressure work. 

We could just sit back and let the computer models and default forecasts take over, and then go on TV implying that we’re giving you our own forecasts. But, now that we have the technology to deliver detailed Neighborhood Forecasts, we will not settle for anything but our best effort. And you shouldn’t settle for it in other Weather Apps, either. 

Glenn “Hurricane” Schwartz
Chief Meteorologist, NBC10 Philadelphia 

Photo Credit: NBC10
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<![CDATA[A Mosquito's Worst Nightmare]]> Fri, 17 Jun 2016 10:45:50 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015820179_1200x675_707468355565.jpg Camden County crews sprayed Cherry Hill, New Jersey to get rid of mosquitoes. A Orange truck was seen late at night spraying the streets.]]> <![CDATA[Schwartz: Hurricane Season's Off to a Record Start]]> Fri, 10 Jun 2016 00:26:18 -0400 http://media.nbcphiladelphia.com/images/213*120/060116+hurricane+generic.jpg

Tropical Storm Colin was the third named storm in the Atlantic so far in 2016. That’s a record. We haven’t seen the “C” storm so early in the season since records began. In case you forgot about the first two, Alex actually formed in January in the far Eastern Atlantic. Bonnie formed off the Florida coast in late May.

Here’s a list of the names for Atlantic storms this season:

  • Alex
  • Bonnie
  • Colin
  • Danielle
  • Earl
  • Fiona
  • Gaston
  • Hermine
  • Ian
  • Julia
  • Karl
  • Lisa
  • Matthew
  • Nicole
  • Otto
  • Paula
  • Richard
  • Shary
  • Tobias
  • Virginie
  • Walter                    

How far we get down the list depends, in part, on what happens in the tropical Pacific Ocean. Is the record El Nino being replaced by its opposite, La Nina?

[[382447721, C]]

The latest animation of ocean temperatures (top) and "anomalies" (compared to normal) shows the red colors of El Nino along the equator being replaced by the blue colors of La Nina.

The top animation from this site shows colder than normal water under the surface ("depth"). The image goes from west to east, showing cold water far below the surface in the western Pacific moving close to the surface in the Eastern Pacific. This is a classic sign of strengthening La Nina.

In general, El Nino favors inactive hurricane seasons in the Atlantic, while La Nina favors active ones. So, that’s why so many forecasts for this hurricane season have predicted higher numbers than in recent years. But other questions remain:
1.    Just how strong will La Nina get?
2.    Where will the hurricanes tend to track?
3.    Will the U.S. "hurricane drought" continue for another year?

Strong El Ninos are usually followed by strong La Ninas. It’s a bit like sloshing water in a bathtub. If you push it hard to one side, it will slosh back hard to the other. The stronger the La Nina gets, the more of an influence it will have. Perhaps it is already having an influence, seeing the early storm development this season.

There are big questions about how strong this La Nina will get. Below are forecasts from many different computer models (similar to the "spaghetti plots" for hurricane track forecasts). That’s a lot of spread between models. Some drop the "index" to near 0, meaning neutral conditions. But some take the number down to -1 or even lower by the middle of summer. That would be considered a "strong" La Nina.

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The last time a major hurricane hit the U.S. was in 2005. That’s the official story, but not the "real" one. So, what was Sandy, a moderate breeze? It was only the second costliest hurricane to ever hit the U.S! And what was Hurricane Ike in 2008 that killed more than 80 people in Texas (direct and indirect deaths)? It had sustained winds of 109 mph at landfall. Nope, doesn’t count, either.

So, if you heard that we’re in a record hurricane drought in the Atlantic, it’s bogus. "Major hurricane" is defined as a purely tropical system with at least 111 mph winds. It doesn’t matter how many people died, how high the water got, or how much damage occurred. Is this the way to define major hurricane?

It’s not really a "drought," but there have not been a lot of hurricanes that hit the U.S. in recent years. That is merely a matter of chance, combined with some El Nino years, and other unusual ocean temperature patterns. Most of the storms that have formed in the Atlantic have curved out to sea.

As they say (whoever "they" are), all it takes is one hurricane to make for a bad season. But the more storms that form, the greater the odds that at least one of them will hit the U.S. And the more storms that form, the greater the odds that the "hurricane drought" will end.

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<![CDATA[Severe Storms Tear Down Trees, Knock Out Power]]> Wed, 08 Jun 2016 16:45:43 -0400 http://media.nbcphiladelphia.com/images/213*120/USE+Palmer+tree+down+house+cherry+hill1.jpeg

A string of severe storms moved into the Philadelphia area as expected midday Wednesday, leaving trains stuck, power out and trees down.

The storms packed downpours, lightning and strong winds up to 60 mph in some places. Hail hit in some areas, including parts of Montgomery and Bucks counties.

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About 1:30 p.m., SEPTA officials said the system's Chestnut Hill West and Trenton Regional Rail Lines were suspended until further notice due to downed wires. Officials said Trenton service was expected to resume about 3:30 p.m. but that some inbound trains would likely be canceled.

Chestnut Hill West service may not return until 4 p.m., SEPTA officials said, due to the extent of the damage affecting that line.

The same downed wires, which are located near the North Philadelphia station, halted three Amtrak trains earlier in the day at the height of the storms.

"Expect overcrowded conditions and delays until further notice," SEPTA officials said in a statement. They said Regional Rail tickets will be accepted on Market-Frankford trains and connecting bus routes, which can serve as alternates for passengers until Regional Rail is restored.

In Warrington, a viewer reported lots of lightning and heavy rain. Viewers in Middletown, Delaware reported downed trees and power lines, causing outages in the area. In Northeast Philly's Somerton neighborhood, there were reports of hail falling. Meteorologist Sheena Parveen said most of the hail that fell with the storm was about pea-sized, but that some areas may have seen slightly bigger hail.

Parveen said once the storms moved out of the area in the afternoon, she couldn't rule out a chance of a spotty shower or two in some places, but that she expected rush hour to be dry.

The storms knocked down power lines along SEPTA's Chestnut Hill West and Trenton Regional Rail tracks, halting service.

The downed power lines also stopped at least three Amtrak trains. The trains were back running by about 1:15 p.m., but were still moving slowly and with major delays. Wilmington, Delaware-bound Passenger Ken Boulden told NBC10 that his train headed south from New York stopped in North Philadelphia.

"All of a sudden everything went dark," said Boulden.

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A conductor came around and said that train appeared to have been struck by lightning, but that there was no fire, said Boulden. Boulden and other passengers then waited on the train as the conductor said a diesel engine could be brought in to rescue them.

Two other Amtrak trains also were impacted by the downed wire not lightning, said Amtrak spokesman Craig Schultz.

Amtrak held all other Northeast Corridor trains at Philadelphia and New York Penn Station until the power problem is resolved, said Schultz.

The storms knocked out power to more than 62,000 PECO customers -- mostly in Chester and Delaware counties -- and about 8,000 Atlantic City Electric customers -- mostly in Camden County. PSE&G reported about 19,500 customers without power.

By 3:30 p.m., PECO's outage numbers decreased, with roughly 34,000 customers still affected. AC Electric and PSE&G's numbers remained about the same.

Six Flags Great Adventure in New Jersey reported that it lost power in the storms, but that all its outdoor rides had already been shut down at the time. One indoor ride was unloaded. Park officials said everyone there is safe.

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The storms also delayed the start of the Phillies planned 1:05 game against the Chicago Cubs to about 1:20 p.m., when players took the field. The tarp could be seen blowing off the field as the brunt of the storms hit.

The National Weather Service suggested people move to interior rooms on the lowest floor of their homes as the storms hit.

Photo Credit: NBC10 - David Palmer
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<![CDATA[Strong Storm Knocks Out Power, Downs Trees]]> Mon, 06 Jun 2016 00:04:17 -0400 http://media.nbcphiladelphia.com/images/213*120/Chalfont+PA+Lightning+cp.png

A strong line of storms moved through the area Sunday evening bringing down trees, causing power outages and sparking a house fire.

The storms, which were screaming east, hit the western suburbs around 5 p.m. bringing horizontal rains and wind gusts as high as 74 mph.

In Blackwood, New Jersey, there was a report of snapped trees and 74 mph winds. Gusts in Delaware County hit the 60s.

Lightning struck a home in Moorestown, New Jersey starting a small fire. Firefighters were able to quickly estinguish the blaze. Homeowner Christine Vanzyl said flames were "roaring out the side of the house."

"We all got out really fast though," she said.

At the height of the storm, more than 28,000 homes and businesses in Pennsylvania, New Jersey and Delaware were without power.

The worst hit was South Jersey were some 19,000 PSE&G customers were left in the dark. More than half have been restored since.

PECO Energy reported about 8,000 customers without power around 6:30 p.m. The hardest hit area was Chester County with more than 6,000 customers left in the dark, officials said.

Delmarva Power said they had 2,400 customers without power near Pike Creek, Delaware.

Crews were quickly able to restore service for most customers by the time the sun set.

A few lingering thunderstorms were moving across central and southern Delaware and the Jersey Shore about 9 p.m., but the rest of the area was relatively clear.

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Photo Credit: Ray Leichner
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<![CDATA[Memorial Day Weekend Ends With Heavy Rain, Storms ]]> Mon, 30 May 2016 10:00:05 -0400 http://media.nbcphiladelphia.com/images/213*120/rain-stock-breaking-148110839.jpg

Sunny skies and warm weather gave way to heavy rain and cooler temperatures during Memorial Day Weekend.

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Tropical Depression Bonnie moved into our area around 6 p.m. Sunday. While Bonnie weakened from a tropical storm to a tropical depression, it the storm still packed a punch, bringing downpours to some areas overnight.

The system poured an average of more than an inch of rain an hour in some places before moving out as it continued north up the coast.

Though the bulk of Bonnie was out by mid-morning Monday, spotty showers and clouds will be the theme of the day for most of the area, with the possibility of a stray thunderstorm or two in some places.

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In addition to the rain, temperatures dropped slightly on Monday, with highs reaching into the 70s in most areas.

A drying trend will start overnight Monday into Tuesday, bringing sun back for much of the remainder of the week. Rain is expected to return on the weekend.

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Several towns canceled their Memorial Day Parades ahead of the rain. Click here to see a list of cancellations.

Stay with NBC10.com and the NBC10 app for the latest weather updates.

<![CDATA[First Alert: Tropical Storm Bonnie Weakens to Depression]]> Sun, 29 May 2016 10:38:59 -0400 http://media.nbcphiladelphia.com/images/214*120/Tropical+Storm+Depression+Bonnie+Shot+from+Carolinas.JPG

A tropical storm that poured rain along the East Coast in the South weakened Sunday morning to a tropical depression as it traveled north.

The National Hurricane Center issued an advisory at 8 a.m. Sunday that Tropical Storm Bonnie weakened to a depression near the coast of the Carolinas.

The storm was expected to make landfall Sunday morning. The National Hurricane Center advisory said much of the Carolinas and coastal Georgia continued to see heavy rain Sunday morning, even as the storm weakened.

All tropical storm warnings and coastal watches and warnings issued in connection with Tropical Depression Bonnie were discontinued.

Bonnie continued to move north at about 9 mph with maximum sustained winds at 35 mph.

The storm could bring rip currents to the Jersey Shore as it moves north. A National Weather Service statement issued early Sunday warned ocean swimmers to stay within sight of lifeguards on New Jersey beaches.

The tropical depression is expected to bring bouts of heavy rain and possible thunderstorms to the Delaware Valley and Jersey Shore in time for Memorial Day.



Stay with NBC10.com and the NBC10 app for continuing First Alert Weather coverage.

Photo Credit: NBC10]]>
<![CDATA[Beautiful Weather Kicks Off Summer at the Shore]]> Sun, 29 May 2016 08:58:49 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015510996_1200x675_695024707680.jpg The holiday weekend's hot, sunny weather brought people in droves to the Jersey Shore, making for a strong start to the summer season for beach towns. NBC10's Pamela Osborne is live on the boardwalk in Ocean City.]]> <![CDATA[Positives & Negatives of Summerlike Heat]]> Thu, 26 May 2016 13:10:04 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015476259_1200x675_693397059898.jpg Heat greeted fans of the Devon Horse Show Thursday.]]> <![CDATA[Memorial Day Weekend Warmup Continues ]]> Thu, 26 May 2016 01:06:39 -0400 http://media.nbcphiladelphia.com/images/213*120/Warming-Trend-Philadelphia.jpg

We’ve seen a tremendous jump in temperatures since Saturday. Here are the official high temperatures in Philadelphia:

Saturday: 62

Sunday: 66

Monday: 76

Tuesday: 83

Wednesday: 88

The average (or “normal”) high for this time of year is 77. So we’ve gone from 15 degrees below normal to about 15 degrees above normal (once we get to the predicted 92).

Relative humidity dropped to only 19% Wednesday afternoon, which is extremely low for this part of the country. For those who follow dewpoints, it was around 40. By Friday, the afternoon dewpoint should be around 60, or even higher. That would make the relative humidity closer to 40%. That’s still not up to July levels, but pretty close.

(Relative humidity is just that-relative-to the temperature. So, in the afternoon, when it gets most uncomfortable, the relative humidity is the lowest. That’s very confusing. And that’s why we normally don’t use relative humidity on TV. The dewpoint is much more consistent from day to night)

There isn’t any day of the weekend (Friday through Monday), when the chance of rain is zero. But it’s pretty low Friday and Saturday, and then it goes up Sunday. By Memorial Day itself, showers become likely. But even then, it’s not a washout. Here are the forecast weather maps for those days:

The maps show a generally dry pattern Friday, with HIGH pressure well offshore (the “Bermuda High”). That means a wind flow from the south, which will result in sea breezes at the shore, keeping temperatures much lower than those inland. The green in the rain area, but it doesn’t mean it’ll be raining everywhere at any given time Monday.

Forecast High Temps

PhiladelphiaJersey ShoreDel. Beaches

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<![CDATA[Beautiful Sunrise to Start Work Week Down the Shore]]> Mon, 23 May 2016 09:12:11 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015413125_1200x675_690951747683.jpg NBC10 Jersey Shore reporter Ted Greenberg shot a beautiful sunrise on the beach in Ventnor, New Jersey Monday morning.]]> <![CDATA[Hurricane's Blog: Summer-Like Temps for Holiday Weekend ]]> Mon, 23 May 2016 10:57:44 -0400 http://media.nbcphiladelphia.com/images/213*120/Summer-Heat.jpg

It’s no secret that this May has been one of the coolest, cloudiest, and wettest ones in memory. We’ve had at least some rain on 17 of the 22 days this month. And how about sunshine? We’ve had exactly ONE official sunny day, as opposed to 14 days of overcast or near-overcast skies.

Temperatures have been above “normal” on only 3 days. Overall, May has been about 4.1 degrees below normal. It’s going to end a streak of 11 straight months of above normal temperatures in Philadelphia.

Here is a look at temperatures compared to normal Sunday 5/22:

[[380438011, C]]

Instead of temperatures gradually returning to normal and perhaps a bit higher, we’re about to see a huge jump in temperatures over less than a week. The high Saturday 5/21 in Philadelphia was only 62 (normal is 76). In Wilmington, DE it was only 60. And in some parts of Southern Delaware and at the Jersey Shore, it didn’t even get out of the 50s.

The pattern will change so fast that we’ll be in full summer levels by this Thursday, and it should stay unseasonably warm all the way through the Memorial Day Weekend. We could even see a day or two that reach 90 degrees. Here is the map of temperatures compared to normal only a few days from now-Thursday.

[[380438031, C]]

The continuous cloud cover and occasional rain will be gone along with the chill. But that doesn’t mean it will be bright and sunny all day through the holiday. The summer pattern could lead to some summer thunderstorms for at least part of the weekend. But at least it’ll feel like summer!

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<![CDATA[Fun, Weather & Baseball for Young Phillies Fans]]> Thu, 19 May 2016 06:05:25 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015360297_1200x675_688661059786.jpg Weather took stage at home plate as the NBC10 First Alert Weather Team hosted Citizens Bank Weather Education Day Wednesday at the home of the Phillies.]]> <![CDATA[NBC10 Weather Education Day at Phillies Ballpark]]> Thu, 19 May 2016 06:06:51 -0400 http://media.nbcphiladelphia.com/images/213*120/CBPedit.jpg

NBC10 personalities will be at the home of the Phillies Wednesday afternoon for the second-annual Citizens Bank Weather Education Day Presented by NBC10 First Alert Weather.

NBC10 First Alert Weather team members Bill Henley, Sheena Parveen, Violeta Yas and chief meteorologist (and huge Phillies fan) Glenn "Hurricane" Schwartz will provide an educational experience focused on weather that all students will enjoy. Hundreds of busloads of area students -- about 11,000 rally-towel-waving children in total -- came to the ballpark for the demonstrations before the Phils faced the Miami Marlins.

"Students of all ages will enjoy this ultimate field trip experience filled with both learning and fun," said the Phillies. [[379931931, C]]

Even if you couldn't make it down to the ballpark you could still check out the educational fun by watching LIVE on this page and following NBC10 on Facebook and Twitter. [[379950861, C]]

The weather programs got underway around 10:30 a.m. and the first pitch of the game is at 1:05 p.m.

Photo Credit: Getty Images
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<![CDATA[Meet the NBC10 Weather Team at Weather Education Day]]> Mon, 16 May 2016 06:22:12 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015304063_1200x675_686395971837.jpg The First Alert Weather Team will be at Citizens Bank Park on Wednesday for NBC10's Weather Education Day. The meteorologists will teach kids about the weather by conducting experiments at the park.]]> <![CDATA[Frost Advisory, Freeze Warning in Effect]]> Mon, 16 May 2016 00:53:30 -0400 http://media.nbcphiladelphia.com/images/213*120/Frost-Generic.jpg


The average (or “normal”) low for May 16th is 54 degrees in Philadelphia. In Allentown, it’s 48. In Mt. Pocono, it’s 45. It’s going to be WAAAAY colder than that Monday morning. It’ll be so cold that there are actually Frost and Freeze Warnings in parts of our area.

[[379585191, C]]

The area in purple is under a Freeze Warning, meaning the official temperature at instrument level (4 ft.) is expected to be 32 degrees or lower. That includes Carbon and Monroe counties, in the Poconos.

The area in light blue is under a Frost Advisory, and it includes Berks, Lehigh, and Northampton counties in our area. That means that as the wind diminishes Sunday night, temperatures at the instrument level might be above 32 degrees, but at ground level, they could drop to 32 degrees or lower. “Unprotected sensitive plants may be damaged or killed.” It’s important to protect or bring plants indoors. (By the way, the record low for Allentown for Monday is 37 degrees in 1939, and we’ll be close).

These advisories are in effect until 8 a.m. Monday, when temperatures will start climbing as the sun comes out. According to the advisories: “sensitive plants could be damaged if not protected or brought inside”. So in those areas, some precautions are advised.


This is just a one night thing. It won’t be nearly as cold for the rest of the week, and would be highly unlikely to occur even later in the month. But unless we see a big warm-up later in the month, this should break our string of 13 straight months with above normal temperatures.

But it doesn’t say anything about how hot the summer will be. That forecast will come later.

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<![CDATA[Crazy Climate Coincidences]]> Fri, 13 May 2016 09:10:49 -0400 http://media.nbcphiladelphia.com/images/180*120/AP_925393290929-solar.jpg


I love coincidences. The best one is the fact that from our view on earth, the moon and sun appear to be exactly the same size. Actually, the sun is about 400 times wider than the moon, but it is also about 400 times farther away. This is why total solar eclipses are so spectacular. The odds of this happening are astronomical (pun intended). Yet it is purely a coincidence. 



Some of this is true, but some is urban legend:

1. Both defeated incumbent Vice Presidents

2. Both their Vice Presidents were Southern Democrats named Johnson

3. Both presidents were shot in the head on a Friday, seated next to their wives

4. Both presidents fathered 4 children, and had a son die during his presidency

5. Each assassin committed his crime in the building where he was employed

6. After shooting Lincoln, Booth ran from a theater to a warehouse; after shooting Kennedy, Oswald ran from a warehouse to a theater

7. Both assassins were killed before being tried

And more…… 


Both presidents died on the same day-July 4, 1826. It was the 50th anniversary of the Declaration of Independence. And yet another president, James Monroe, died on the 4th of July. 


Sometimes coincidences happen. But most times that one thing seems to cause another thing, they really are connected (unless it interferes with your pre-conceived beliefs…..) 

It must be a coincidence that: 

*Global temperatures have increased as carbon dioxide has increased (as expected from global warming science (GWS)……yes


*Warmer oceans hold more moisture which leads to more days with downpours…..already happening


*Warmer oceans lead to higher sea levels, which lead to more days of coastal flooding….already happening


*Warmer oceans in winter lead to more moisture. If it’s cold enough, the big snowstorms get bigger….already happening 


*Warmer oceans in winter can help lead to bigger snowstorms when it is cold enough for snow (the map below from the winter of 2015-16 just before our one giant snowstorm of the winter in the Philadelphia area)….already happening


*Sea level has been steadily increasing in recent decades…as expected by GWS…..already happening


*As more carbon dioxide gets dissolved into the oceans, the water will become more acidic….already happening 


*The amount of snow cover overall will decrease due to higher temperatures and fewer snow days…..already happening


*Warmer oceans allow any given hurricane, typhoon, or cyclone to become more intense. This is true for many parts of the world…..already happening


*Warmer temperatures will lead to overall less snow pack due to melting snow in addition to fewer days with snow….already happening


*The poles will warm more than other areas, helping to accelerate ice melt in the Arctic….already happening (sea ice melt leads to higher temperatures, which leads to more melting, which leads to higher temperatures…etc) 


*Ice melt on land directly leads to higher sea levels. Greenland is critical,

And melting continues there…already happening 


*Parts of the Antarctic Peninsula are vulnerable to quick ice melt…while sea ice is increasing in other parts of the continent, the fragile Peninsula is indeed already melting.


*The great majority of glaciers around the world will have significant melting due to higher temperatures…already happening


Either this is the most amazing series of coincidences I’ve ever heard of, or global warming is already having a significant impact in many ways over many areas. Are you willing to bet the future that all of these “coincidences” will stop or reverse themselves? Or do we take this seriously and do something to at least slow down these changes? 


Glenn “Hurricane” Schwartz

Chief Meteorologist, NBC10 Philadelphia

Photo Credit: AP
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<![CDATA[Meet NBC10's Meteorologists at Weather Education Day]]> Thu, 12 May 2016 04:46:41 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015253730_1200x675_684227139590.jpg NBC10's First Alert Weather Team will do weather demonstrations and teach kids about the science behind the weather during the second annual Weather Education Day on Wednesday, April 18 at Citizens Bank Park.]]> <![CDATA["Hurricane" Schwartz: At the Shore, the Ocean is Winning the Battle]]> Tue, 10 May 2016 19:10:13 -0400 http://media.nbcphiladelphia.com/images/213*120/nj+coastal+flooding+2+9.jpg


I’ve been going to the Jersey Shore since the 50s. My parents have lived there full-time for about 20 years. So I’m pretty familiar with how things have changed. The bottom line: IT FLOODS MORE FREQUENTLY AND MORE SEVERELY. Ask anyone who lives near the back bays in Atlantic City, Ventnor, Margate, Ocean City, Sea Isle City, and more, and they’ll tell you the same thing.

In the old days, it would take an actual storm to produce flooding. It could be a strong nor’easter or a brush with a hurricane, but floods were not frequent. The blocking pattern last week is a perfect example of how easy it is for flooding to occur at the Shore.


In the National Weather Service discussion early last week, there was a special section on coastal flooding. Tides were going to be high regardless of any storms, simply due to the coming new moon (tides get higher near the full moon and new moon). There’s also a thing called "Spring Tides," when the Earth, sun and moon are in a line. Their gravitational pulls reinforce each other, and the resulting high tides are even higher than others during the year. But still ...

The NWS statement:



So, wait a minute! Are they saying that the "storm" only has to raise the water level by 0.7 feet to create coastal flooding? Less than ONE FOOT? Yup, they are.


The sea level doesn't rise equally across the world. It's simple physics: warm the oceans, and sea level will rise. It’s called "thermal expansion."

And there’s no doubt the sea level all along the East Coast has been rising in the past century. Here’s what the Atlantic City graph looks like:

[[378829091, C, 1000, 400]]

New Jersey's sea level rise is about more than the general warming of the oceans that is affecting coastlines all over the world. It's been rising faster in our area due to "subsidence" (the land sinks a bit), plus changes in the nearby Gulf Stream (possibly related to global warming as well). It all adds up to trouble: sea level has risen about 8 inches in Atlantic City since 1970 alone (about 15 inches since 1900). That doesn't seem like much, but look at what it's done. It floods with a wimpy, barely-there nor'easter! And that's NOW. What happens in the future, as sea level continues to rise?


In the 1990s, Atlantic City reported fewer than 10 days a year with at least minor coastal flooding. By this decade, the number is close to 30. And with projections of continuing sea level rise (there’s nothing to stop it), the frequency of flooding will become astonishing.

The list below shows how many days with coastal flooding ...

1. Currently

2. In 2030, and

3. In 2045

For Cape May, NJ

1. About 30

2. About 125 days

3. About 300

For Atlantic City, NJ

1. About 30

2. About 90 days

3. About 240

For Lewes, DE

1. About 25

2. About 90 days

3. About 220 days

We’re only talking about 30 years from now, when it will flood at high tide about SIX days every week in Cape May, and FIVE days a week in Atlantic City!

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<![CDATA[NBC10 First Alert Severe Weather Central]]> Sun, 24 Jan 2016 16:34:40 -0400 http://media.nbcphiladelphia.com/images/213*120/generic+umbrella+rain+storm.jpg

Photo Credit: Shutterstock]]>
<![CDATA[Extreme Weather: Wildfires in the West]]> Thu, 23 Jun 2016 17:47:27 -0400 http://media.nbcphiladelphia.com/images/213*120/AP_16174745006557-fire.jpg Take a look at photos of extreme weather from the U.S. and around the world, from floods to snow to rough seas.

Photo Credit: AP]]>
<![CDATA[Wet Weather Puts Damper On Delaware Events]]> Sat, 07 May 2016 02:17:53 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015175486_1200x675_681172547774.jpg The wet weather seems to be making a lot of changes to events throughout Delaware. NBC10’s Tim Furlong is at the Flower Market in Wilmington with more.]]> <![CDATA[Coastal Flooding Hits Jersey Shore]]> Sat, 07 May 2016 01:48:39 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015174630_1200x675_681014339843.jpg There is a threat for more coastal flooding Friday evening. NBC10’s Ted Greenberg is in West Wildwood with the latest conditions.]]> <![CDATA[Flood Threat at Jersey Shore]]> Fri, 06 May 2016 11:13:56 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000015166443_1200x675_680585283966.jpg Continued rain brings a threat of flooding in Ocean City, New Jersey on Friday. Drivers should expect rain to impact their commutes.]]> <![CDATA[Stuck in the Block: How Long Will the Rainy Weather Last?]]> Wed, 04 May 2016 00:12:14 -0400 http://media.nbcphiladelphia.com/images/213*120/rain-generic-GettyImages-456729820.jpg

Remember when we had those ten straight dry, sunny days last month? While many of us were enjoying that stretch of weather, it was day after day of rain in Louisiana and surrounding states, causing record flooding. It’s known as a Blocking Pattern, and it’s our turn to get stuck in the cool, cloudy, and damp part of one.

No. We have seen blocking patterns in the upper atmosphere as long as we’ve seen maps of the upper atmosphere. They are more common in some parts of the year and more common in certain parts of the world. If we didn’t have blocking patterns, that would be unusual.

In this case, the cool, cloudy, damp weather will continue through at least Friday. Temperatures may not even reach 60 in many parts of the area (our normal high is 70). I don’t expect a lot of rain to fall-no flood threat or anything close to it. But we will see fog and some drizzle at times during the next two days. By Friday, the center of the upper-air low will be right over us, so that may be the day when we see more hours of rain. There could even be some coastal flooding, due to the persistent wind off the ocean plus the new moon (which raises tides all by itself).

Here is that upper-air map for Friday. That’s pretty extreme for May.

[[378056661, C]]

The blue areas are below normal pressures, with the center of the upper low right over Delaware Bay. And here’s the surface map for the same time:

[[378056781, C]]

That’s a map that shows a rainy and chilly pattern, especially for May.

It takes a while for blocking this strong to break up, and that’s been the case this spring. Look at the upper-air pattern for Thursday:

[[378056901, C]]

Not only is there a strong LOW in the Eastern U.S., there’s another one along the California coast. And then there’s a HIGH pressure ridge in-between. Does the U.S. pattern look familiar? It looks like the Greek letter Omega:

[[378056981, C]]

OK, it may not look exactly like an Omega to some of you, but meteorologists have been using the term for ages.

This particular Omega Block will be breaking up over the weekend, just in time to allow for some sunshine and mild temperatures to return. And the pattern by the middle of next week will look much different than it does now.

[[378057031, C]]

That’s a more “normal” pattern, which will allow much warmer air to move in. And lo and behold: temperatures near 80 are in the forecast by Wednesday.

Photo Credit: Getty Images
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<![CDATA[No Lights, No School in Delaware]]> Tue, 03 May 2016 08:17:50 -0400 http://media.nbcphiladelphia.com/images/200*120/Smyrna+High+School+Smyrna+Middle+School.JPG

Power outages knocked out classes from some Delaware students Tuesday.

The Smyrna School District closed the middle and high schools on Duck Creek Parkway due to a lack of power, said the district.

No word yet on when power will be restored.

Strong storms moved through the area overnight knocking out power to some customers. The district didn't reveal what was to blame for the outages at the schools.

Photo Credit: Google Earth]]>
<![CDATA[NBC10 First Alert: Rain Continues Through The Night]]> Tue, 03 May 2016 01:32:33 -0400 http://media.nbcphiladelphia.com/images/213*120/sheenamidnight_1200x675_678252099953.jpg Meteorologist Sheena Parveen has your Neighborhood Weather update as thunderstorms make their way though the area. ]]> <![CDATA[Heavy Rain and Flooding to Hit Area ]]> Tue, 03 May 2016 00:28:43 -0400 http://media.nbcphiladelphia.com/images/213*120/Heavy+Rain+Localized+Flooding.jpg A system bringing heavy rain, localized flooding and possible thunderstorms is set to hit our area Monday night and last until Tuesday morning. Check out the expected rain totals and timing below. ]]> <![CDATA[Dealing With a Rainy Blue Cross Broad Street Run]]> Fri, 29 Apr 2016 13:40:00 -0400 http://media.nbcphiladelphia.com/images/213*120/Marathon+Running+in+Rain+Boston.jpg

NBC10 digital producer Dan Stamm has completed eight Blue Cross Broad Street Runs (including one in a downpour) and 10 marathons (some in the rain). He has also completed numerous 5Ks, half marathons and other distance runs in a variety of conditions from cold to scorching heat.

I don’t consider myself an expert but I know a thing or two about running, and even running in the rain thanks to my experiences. Here are a few tips (from myself and the experts at Runner’s World) for Blue Cross Broad Street Run participants not used to dreary conditions or not used to running 10-miles drenched.

Manage expectations: With rain comes slipperier roads and likely slower times. If you don’t quite hit your goal, don’t beat yourself up, look behind you, you still beat plenty of people.

Wear the right clothes: Heavy clothing light sweatpants and shirts might keep you warm but they get heavy as they get wet. I suggest wearing light tech material clothing and running tights if you want to stay warm – the tighter the item, the less likely you will chafe. A hat – ideally a waterproof cap – can also help keep the rain out of your face and your head warm.

Wear the right socks: The moisture could increase your chance of getting blisters so wear socks that wick moisture away and also place some anti-chafing agent on problem spots on your feet.

Protect from chafing: Talking about chafing (it's a dirty word)... Use a petroleum-based product or an anti-chafing cream that can withstand the moisture and prevent chafing – target arms, inner thighs, feet, bra lines and nipples with the lube. I personally also bandage my nipples to prevent irritation.

Stay hydrated: Just cause it’s raining and a little chilly doesn’t mean you don’t need to stay hydrated. Be sure to get water and Gatorade from the stations along the way. Also, drink fluids starting the day before the race.

Get out of the wet clothes: Once you cross the finish line and grab your well-deserved medal, be sure to change into drier clothing as quickly as possible. Pack a pair of comfortable sandals in your checked bag and take off those running shoes and wet socks post-race.

Stay Calm: It’s rain, you’ve seen it before, you’ll see it again. Smile, stick your tongue out if you want, and enjoy the trip down Broad Street.

Keep an eye out for Dan Stamm and the rest of the NBC10 Team at the 2016 Blue Cross Broad Street Run.

Photo Credit: Getty Images]]>
<![CDATA[Running in the Rain?]]> Thu, 28 Apr 2016 18:19:04 -0400 http://media.nbcphiladelphia.com/images/213*120/Broad+Street+Run+starting+line+City+Photo.jpg


It won’t be raining the whole time, but there WILL be some rain this weekend, and it will NOT be warm-or even mild. Overall, it looks like Saturday will have better weather than Sunday, but even Saturday is no picnic. It is likely to be raining during the Blue Cross Broad Street Run Sunday morning. 


It’s largely about the wind-specifically the wind direction. The first step in making my weather forecast is always the wind, since it’s so important in forecasting in this area. A wind from the ocean (East or Northeast) will be a major factor, especially if it lasts for days. Eventually, clouds will be moving in, and once they’re here, it’s hard to get rid of them until the wind direction changes. That is the current issue. 

Here’s a map of where our air is coming from. New Jersey and Long Island stick out pretty clearly, so you can tell where we are on the map. You can find an animation of this map here:

[[377498811, C]]

Computer models show that this basic pattern will last for several more days. This means cooler than normal weather, lots of clouds, and some periods of rain. These persistent East winds are common this time of year, and can keep temperatures in the 50s for days. And if the ocean is cold enough, it can stay in the 40s! 

That’s the current picture. Let’s see how it changes over the next few days… 


Here’s a forecast wind map for Friday afternoon. The east wind is coming from hundreds of miles out in the ocean. There’s no way we can warm up with a wind like that.

[[377498891, C]]

There’s no sense showing what this map will look like over the weekend, since it will barely change. 

Here is the result of those persistent east winds:

[[377498951, C]] 

That’s the forecast from the NAM model for the same time as the earlier wind map. The green is the rain. That area of rain moves out, so Saturday is merely cloudy and chilly:

[[377499161, C]]

But the rain-even heavier rain-is approaching from the west by late Saturday. That means rain for Sunday, and it could be briefly heavy:

[[377499441, C]]

It doesn’t improve for Monday. But that should be the last day of the east wind-aided chill and rain. We’ll get back to normal-eventually.

Here is the forecast for the next 4 days:

Friday: Cloudy and chilly. High only 55. Periods of rain, mainly in afternoon

Saturday: Cloudy and chilly. High 61. Chance of rain at night

Sunday: Rain, heavy at times. Still chilly, with high only 58.

Monday: Periods of rain. Still chilly, with high 61.

Photo Credit: Kait Privitera
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<![CDATA[Thunderstorms Move Through Region ]]> Wed, 27 Apr 2016 00:19:05 -0400 http://media.nbcphiladelphia.com/images/213*120/Storm-Clouds-Philly-Amtrak.jpg

Heavy rain and thunderstorms moved through our area Tuesday.

A Severe Thunderstorm Warning was in effect for Burlington County and Ocean County in New Jersey as well as Chester County, Delaware County and Montgomery County in Pennsylvania until 6:30 p.m.

Lightning and hail was also spotted in parts of Central New Jersey early Tuesday evening. The system moved out of the area around 8 p.m.

A rainbow was also spotted in parts of the region after the storms passed through.

[[377190011, C]]

Photo Credit: Mary Ellen
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<![CDATA[The Global Warming "Tease"]]> Tue, 26 Apr 2016 14:53:59 -0400 http://media.nbcphiladelphia.com/images/178*120/102708-Top-News-Gallery-Morning-Walk.jpg


Scientists talk about Global Warming as a problem (or even pending disaster) so often that it may be hard to take seriously. After all, most people seem to like warmer winters, the flowers to bloom earlier and a warmer ocean to swim in. No wonder Global Warming is always WAAAAY down on the list of things the public worries about the most.


I didn’t say it-it’s the title of an article in the New York Times last Thursday. A paper in the latest issue of the journal “Nature,” the authors write that ”for a vast majority of Americans, the weather is simply becoming more pleasant. Over the past four decades, winter temperatures have risen substantially throughout the United States, but summers have not become markedly more uncomfortable.”

(Of course, there are some who hate many of the changes we’ve seen: skiers who bemoan the shorter season; snow plow operators not happy about making less money; and certain students and teachers who are upset about fewer “snow days”. But that is a small minority.)

So, the obvious result is a contradiction between what many scientists and politicians have been saying. It’s hard to be concerned about something that is showing so few obvious signs of the serious problem that is likely ahead of us. We can raise our voices and point at charts of ice loss in the Arctic and all we get is yawns from too many people. And I’m afraid that there’s not much that can be done about this. It’s hard to tell folks to not believe what they’re seeing with their own eyes.


Not many people have traveled to the Arctic to see the dramatic loss of ice that has occurred from Alaska to Greenland (and beyond). And even if you do travel there, there’s no basis for comparison. Only the people who live in those areas can clearly see the dramatic changes that have occurred over recent decades.

Here is what those of us in the Continental U.S. cannot see:

1. Carbon dioxide itself-it has no color or smell. But it can be measured, and has steadily increased for more than 50 years.


2. Deadly heat waves-in Europe, the Middle East, South Asia (India/Pakistan), East Asia (Japan/China), Russia, and more:

2003 Europe       50,000-70,000 killed

2010 Russia        56,000

2006 Europe         3400+

2015 India            2500

2015 Pakistan       2500

2010 Japan           1700+

3. Loss of Arctic sea ice


4. Loss (and darkening) of Greenland sea ice

5. Warming ocean temperatures


6. Warming of subsurface ocean


7. Rising sea level


8. Retreat of most glaciers

9. Ocean acidification


10. Coral bleaching


1. More downpours=worse flooding


2. Intensity of winter storms (warming=more water vapor=”wetter” storms


3. More frequent and more severe coastal flooding


All of the above changes are agreed on by most climate scientists. These are not computer projections-this is based on actual data.

There is more disagreement about the following, but evidence of a global warming connection seems to be increasing:

1. More intense tropical cyclones (hurricanes & typhoons). Total numbers of storms haven’t changed much, but a greater percentage has become intense in recent years.

2. More heavy snowstorms. The total number of days with snow has decreased in many areas, but a greater percentage of snowstorms has become major in recent years

3. More frequent and more severe droughts. Many scientists are convinced that warming temperatures have already led to this.


It wasn’t that long ago that most climate scientists didn’t expect many of these major changes to show up for decades. For example, the Arctic ice melt is happening WAAAAY faster than their computer models showed. These changes are not likely to reverse themselves in the future, as long as global temperatures continue to rise.

Eventually, with enough of these changes becoming obvious, more and more people will care a lot more about climate change. Unfortunately, by the time this happens, it will be even harder to stop the changes, let alone reverse them. We’ve been “teased” by the “nice” weather. So far.

Glenn “Hurricane” Schwartz

Chief Meteorologist, NBC10 Philadelphia

Photo Credit: AP
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<![CDATA[Sudden Tsunami Buoy Movement Off NJ Coast Raises Concerns]]> Mon, 25 Apr 2016 11:11:27 -0400 http://media.nbcphiladelphia.com/images/213*120/Tsunmai+Buoy+New+Jersey+Texas+44066.jpg

A tsunami buoy off the New Jersey coast went into "event mode" Sunday night, raising concerns after it recorded a very steep wave reading while undergoing maintenance.

Texas Tower No. 4 Station 44066 — a tsunami buoy located about 75 nautical miles east of Long Branch, New Jersey — recorded a sudden change of about 55 meters in water depth in a matter of seconds. A report on New York-based Superstation95’s website was shared across social media overnight.

"Event mode" occurs when the algorithm on the Bottom Pressure Recorder (BPR) detects info more often — every 15 seconds is possible — due to sudden activity.

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The seemingly seismic event, which occurred around 22:38 UTC (6:38 p.m. Eastern Time), raised fears among community members.

But no, it wasn’t an earthquake — the nearest quake, recorded off the coast of Punta Cana, Dominican Republic, about 10 minutes later, was unrelated — nor was some super wave headed for the Jersey Shore.

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The event was actually caused by routine maintenance work being done to the buoy, the National Data Buoy Center (NDBC) told NBC10 Monday morning.

Often, the NDBC will turn off the buoys while work is being done to avoid causing concern like what happened in this case, said the Mississippi-based NDBC. 

"Not every Event is a tsunami," says the NBDC website. "In some cases, it can go into Event Mode because of electronic problems, or during the recovery of a BPR. The tsunami warning centers can initiate an event to have the tsunameter report more frequently in anticipation of tsunami. Events are usually initiated by the seismic signal from an earthquake, and the actual tsunami, if there is one, will pass the tsunameter later. It requires expert analysis to determine a tsunami from the tsunameter data."

The NDBC works on buoys about once a year.

[[238427591, C]]

Photo Credit: National Data Buoy Center
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<![CDATA[Glenn Explains NBC10's New "Neighborhood Weather" ]]> Thu, 21 Apr 2016 00:13:52 -0400 http://media.nbcphiladelphia.com/images/213*120/10-Day-Outlook.jpg

The area covered by NBC10 goes from the Lehigh Valley to southern Delaware-from Western Chester County to the Jersey Shore. That’s a huge area, which often sees huge differences in weather at any one time. I’ve seen temperature differences of more than 30 degrees. There actually was a snowstorm that ranged from 2” to 50” (yes, in the SAME storm!). It has been impossible for TV stations to show that complete picture on a day-to-day and hour-to-hour basis. Now we can.

When I started doing TV weather around 1980, there were only a few airports in the region that provided hourly reports. Weather satellites only gave us fuzzy pictures a couple of times a day. Computer models were primitive, at best. Forecasts had value to only about THREE days out. Anyone attempting a 5-day forecast back then couldn’t do better than guessing (no, we don’t do that now).

Now, everything in weather forecasting has changed. We have live reports of current weather for a couple of hundred locations in our area. Weather satellites have such high resolution that we can clearly see a single thunderstorm from about 22,000 feet up, with minute-by-minute pictures that get put into smooth time-lapses.  The surface and satellite data is now entered into some of the fastest computers in the world. As a result, computer models have gotten better and better, and more and more detailed in recent years.

Don’t you think it’s about time that we shared that increased information with you?

We now have so much information at our disposal that frankly it’s hard to narrow down what to show in any single weathercast. So now we can show drastically different types of current and forecast weather every time you see us. We might show The Shore one time, the Lehigh Valley the next, then Delaware, etc. And boy, do we have current weather to show you! How about 40 towns in Delaware alone? We can show the effect of the sea breeze in great detail. This tremendous increase in current data comes mainly from our new exclusive partnership with Weather Underground, a highly respected company that has been at the cutting edge since the internet was started! The partnership allows us to find out and display current weather conditions anywhere in the world… from Pennsylvania to Paris, Delaware to Delhi.

How about forecasts? We now can make individual forecasts for dozens of neighborhoods in the area. We can show the same spot hour-by-hour, or show a forecast for NINE different locations on the same graphic. We have 5-day forecasts, and now even a 10 day forecast (more on that later). And no longer is there just a 7-day forecast for Philadelphia-there’s one for each part of our area, and it’s scrolled CONTINUOUSLY on the bottom of the screen during each weathercast.  

We realize these are big changes, and it will take some time to get used to what may feel like a barrage of information. But we feel that our viewers will gradually get used to it, and appreciate seeing current and forecast conditions for their neighborhood. Ever heard of a TV forecast for Byberry, Haddonfield, Linwood, Dover, Mt. Airy, Newtown, Easton, and more? We have them for you.

Plus, you can get these same forecasts on NBC10.com and the NBC10 Weather App.

No, we’re not kidding, and we do not do it just to be first, or to have something to promote. As I mentioned earlier, the science of weather forecasting has come a long way in recent decades. NBC10 was the first to debut a 7-day forecast in 2002. When we did it, we tested it privately for a year to prove we could do it, having some accuracy (in science, it’s known as “skill”) all the way out to day 7. Of course, we’re more accurate for day 3 overall than day 7, and you should keep that in mind.

Now, computer models and detailed data have improved enough to support a 10-day forecast. Our “skill” out to day 10 is about as good as it was to day 7 was when we introduced the 7-day forecast. We don’t claim we’re going to nail it to the exact degree, but you can be pretty confident day 10 will be  within 5 degrees of our forecast, one way or the other. Our sister NBC Owned TV stations have also done independent research that showed similar skill out to 10 days. You can ignore it if you want, but it’ll be out there if you’re interested.

It’s not commonly known, but that “zip code forecast” you might get on your phone likely comes straight from a computer, with NO human forecaster involved. While computer models are good, they have flaws, including “biases” to be either too cold or too warm regularly. If a human was involved, they could figure that out and adjust for it. But no company has the manpower to make separate forecasts for hundreds of zip codes in our area. This is why many of your phone apps were so bad (until now).

What we do is take the computer outputs and adjust them as needed. This, in itself takes us hours every day to do. But we think it’s worth it. I want to go on TV and tell you that this is MY forecast, not something straight out of a computer model that may be way off because some bad data got entered into it.

We have been working on creating this new and true Neighborhood Weather for months, and have been eager to put it on-air. But we wanted to get the “bugs” out first. This effort has been led by our new, brilliant weather producer, David Parkinson, with input from me, Sheena, and Bill along the way.

We’re excited about the chance to lead the Philadelphia TV market in a new way that reflects the current state of the science. We’ve been doing that since the mid-90s with the cutting-edge Earthwatch computer system. And we will continue to look for ways to bring you the latest technology (and not just fancy graphics) for years to come. Science always evolves and improves. Sometimes it takes a while to get used to. But new technology often is. And it’s often worth it.

Going forward, we’re going to continue to make a lot of investments in weather at NBC10 because we know how important it is to have an accurate, meaningful and specific forecast for you and your family. Technology will continue to get better and better, and we’re excited to share the future with you.

Photo Credit: NBC10.com ]]>
<![CDATA[NBC10 First Alert Neighborhood Forecast: Sunny & Beautiful]]> Sat, 16 Apr 2016 07:12:09 -0400 http://media.nbcphiladelphia.com/images/213*120/bill_weekend_launch_1200x675_667461699771.jpg Meteorologist Bill Henley has your Saturday First Alert Neighborhood Forecast full of sunshine and warm temperatures.]]>