<![CDATA[NBC 10 Philadelphia - Philadelphia Weather News and Coverage]]>Copyright 2017http://www.nbcphiladelphia.com/weather/stories http://media.nbcnewyork.com/designimages/NBC10_40x125.png NBC 10 Philadelphia http://www.nbcphiladelphia.comen-usSat, 29 Apr 2017 19:29:37 -0400Sat, 29 Apr 2017 19:29:37 -0400NBC Owned Television Stations <![CDATA[Today's Forecast]]> Sat, 29 Apr 2017 18:53:50 -0400 http://media.nbcphiladelphia.com/images/213*120/NBc10+Weather+First+Alert+Weather+Team+Glenn+Schwartz+Krystal+Klei+Erika+Martin+Bill+Henleey.jpg

Some isolated thunderstorms are possible along the southern edge of our region-- primarily Kent and Sussex counties, along with Cape May county. The window for these spotty, short-lived storms is 8pm to 2am. Most of the region will remain dry.

Sunday the winds will change. The warm western flow of Saturday turns into a cool eastern flow Sunday. A cold front passage overnight allows for this shift. Temperatures will only hit the mid to upper 60s in the afternoon. Sunday will be mostly to partly cloudy, and just a bit breezy.

By Monday, temperatures will return to the 80s and isolated thunderstorms are possible into the evening.

Sunday: Mostly to partly cloudy. Warm morning, cooler afternoon gradually climbing to the mid to upper 60s. High 69.

Monday: Mostly cloudy and warm with late day thunderstorms likely. High 84

Tuesday: Partly sunny and mild. High 77

Wednesday: Mostly sunny and mild. High 69

Thursday: Rainy and sharply cooler. High 63

Friday:  Cool and blustery with periods of heavy rain. High 64

Photo Credit: NBC10
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<![CDATA[List of School Delays in Our Area ]]> Sun, 04 Dec 2016 16:28:06 -0400 http://media.nbcphiladelphia.com/images/213*120/school+bus+snow.jpg
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Photo Credit: AP]]>
<![CDATA[Blog: Summer-Like Conditions for NFL Draft, Penn Relays]]> Thu, 27 Apr 2017 11:55:33 -0400 http://media.nbcphiladelphia.com/images/213*120/EVENT+3+DAYS3DAY.jpg Scheduling big outdoor events for the end of April can be tricky when it comes to the weather. It's still springtime which can bring large temperature swings and the threat of spring storms. But this time around, Mother Nature seems to be on board with nice and unusually warm conditions for the Penn Relays and the NFL Draft in Philadelphia.

Photo Credit: NBC10]]>
<![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
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<![CDATA[Sign Up for School Closing Alerts]]> Wed, 09 Nov 2016 16:18:10 -0400 http://media.nbcphiladelphia.com/images/219*120/schoolbussnow.jpg Be alerted as soon as you or your child's school closes.
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@HURRICANE10]]> <![CDATA[Are Tornado Warnings Getting Worse? ]]> Wed, 26 Apr 2017 20:36:03 -0400 http://media.nbcphiladelphia.com/images/213*120/Tornado+siren+generic.jpg

Before I get into the recent fascinating and troubling story on tornado warnings, let me tell you a story -- a true story -- from my days with the National Weather Service.

I interned at the National Hurricane Center in Miami in the 1970s (not a typo). Part of the office housed the local National Weather Service office that covered all of South Florida. My boss (the Meteorologist-In-Charge) was in charge of some things for the entire state, which included keeping official statistics on Florida tornadoes.

This guy (who shall remain nameless, partly because I can’t remember his name) had an unusual philosophy about tornadoes. He didn’t believe in simply inspecting storm damage and determining whether it was a tornado. We only did that with the “bigger” ones, which in Florida means practically no tornadoes. His orders were: “It’s a tornado unless we have evidence that it wasn’t." So, if there was damage, and we heard that a witness saw a funnel, it was a tornado. If we read a newspaper article the next day that quoted someone saying, “It sounded like a freight train," it was a tornado. Or if any local official told us so, it was a tornado.

Surprise, surprise! Florida ranked second in the country in the number of official tornadoes for much of the 1970s. But did it really? I assume other NWS offices had different philosophies, so how can we accurately compare tornado numbers? It’s not like comparing temperatures, rain, snow, wind, etc.

Again, keep in mind that tornado statistics are not precise. If one knocks over a few trees in the woods, it probably won’t be counted. And determining whether it was a tornado is not an exact science. I should know-in my later years with the NWS in Georgia, I was the one responsible for inspecting damage and making determinations. The weaker the tornado, the harder it was.

An article from Jason Samenow of the “Capital Weather Gang” at the Washington Post showed the numbers, and the study that had the bad news.

So, only 58% of tornadoes in the U.S. were detected before touching down, compared to 75% only a few years ago.

Are they being more selective in issuing warnings, in order to minimize the problem of “false alarms?" There’s not much evidence of that:

The false alarm rate (FAR) hasn’t dropped much. Note that 7 out of 10 tornado warnings are “false alarms”- that’s a problem.

Is the NWS becoming bolder in issuing warnings in order to detect more of them? If so, the warning time should be going up. But it isn’t-it’s going down.

The “lead time” is down to only 8 minutes, compared to a record 15 minutes in 2011.

These numbers are an unpleasant surprise. They should be improving, with the new generation of “Dual-Pol” Doppler Radars. Warnings for severe weather are the highest priority of NWS. Here is a theory from Harold Brooks, an expert on this subject:

    “Forecasters have faced increased pressure to reduce tornado ‘false
    alarms’……’motivating some forecasters to issue fewer warnings’

There is a little evidence of that, with FAR dropping a few percent. But there may be other issues:

1.    Tornado warning areas may be shrinking in recent years, as forecasters try to get more precise with warnings. In the old days, entire counties were included, which would result in fewer “false alarms." If they narrow the warning area and still reduce the FAR, that is much better news.

2.    Have a lot of older, experienced forecasters retired in recent years, leaving less experienced ones issuing the warnings? As an older, experienced forecaster myself, I would understand that theory.

3.    There have been more small and “weak” tornadoes in recent years. They are harder to detect, and hard to give more than a few minutes warning. But Brooks says “lead times have dropped by 3-4 minutes for all intensity scales.”

4.    The sample size is too small to definitively prove the changes. We’re talking about tiny storms over a huge country.

5.    All tornado statistics are questionable, due to changes in verification philosophy across the country and from time to time. Maybe we’re comparing “apples and oranges." I hope so.

Less than ten days ago, the President signed a bill into law to improve forecasts and warnings in the future. “The Weather Research and Forecasting Innovation Act” is concentrated on getting better severe weather warnings for tornadoes and hurricanes, among others. It aims to improve data, computer models, and other research. This should lead to longer lead times and lower false alarms in the future. And maybe it will even help the U.S. computer models catch up with the world-leading European model.

There was strong bipartisan support for this bill, which shows how important better forecasts and warnings are to EVERYONE in ALL PARTS OF THE COUNTRY. I don’t think we’ll ever see one-hour lead times for tornado warnings. Most tornadoes are too small and short-lived for that. But getting back to that 15 minute lead time would be a great start.

Photo Credit: NBC 5 News
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<![CDATA[From Nor'easter to Summer-Like Temperatures ]]> Tue, 25 Apr 2017 06:54:49 -0400 http://media.nbcphiladelphia.com/images/213*120/Roller+Coaster+Weather+_23365856.jpg We're in for a wild week of weather with rain from a nor'easter Tuesday and then summer-like temperatures towards the end of the week. NBC10 First Alert Weather chief meteorologist Glenn "Hurricane" Schwartz has the details. ]]> <![CDATA[April Tropical Storm Kicks off 2017 Hurricane Season Early]]> Thu, 20 Apr 2017 22:09:00 -0400 http://media.nbcphiladelphia.com/images/213*120/0096565cms.jpg

Since the weather satellite era began in the 1960's, Arlene is only the second named storm known to form in the Atlantic basin during the month of April. The first was Ana in 2003. Even more remarkable is the fact they both developed on April 20th.

According to forecasters at the National Hurricane Center, Arlene is not expected to pose any threat to land and as of 5:00 p.m. Atlantic Standard Time Thursday was located at 37.7N 42.0W about 800 miles west of the Azores Islands with maximum sustained winds of 45 mph, a minimum pressure of 993mb and is moving west-northwest at 22 knots. The storm is expected to dissipate far out in the central North Atlantic on Friday.

[[420033493, C]]

Tropical season in the Atlantic basin officially begins June 1st and ends November 30th each year, which is what makes Arlene so rare.

This year, the tropical outlook from Dr. Phil Klotzbach and researchers at Colorado State University calls for 2017 season to be slightly less active than average with 11 named storms including 4 hurricanes, 2 of which are major hurricanes category 3 or higher.

For comparison, an average season would have 12 named storms including 6 hurricanes, two of which would be major hurricanes.

[[420033533, C]]

The expected downtick in named storms is due to cooler than average water in the far north Atlantic and the possibility of a weak El Nino pattern developing which creates stronger westerly winds in the upper atmosphere that can shear apart storms in the Atlantic.

The 2017 tropical outlook will be updated again on June 1st but at this point we can be guaranteed of at least 1 named storm in 2017.

Photo Credit: AP
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<![CDATA[Large Asteroid Flying by Earth Wednesday]]> Wed, 19 Apr 2017 06:50:49 -0400 http://media.nbcphiladelphia.com/images/213*120/86060690.jpg

A large asteroid — about 2,000-feet wide — is expected to speed safely by Earth on Wednesday, NBC News reported.

NASA said the space rock will not hit our planet, as it will be at a distance of 1.1 million miles. But that's still remarkably close by astronomical standards.

Approaches this close by an object this big occurs only about once a decade. This specific asteroid, formally called 2014 JO25, hasn't come this close to Earth in at least 400 years.

Though 2014 JO25 won't collide with Earth, the damage would be significant if it did. The blast would likely create an impact crator about 10 kilometers (more than six miles) wide, according to planetary scientist William F. Bottke.

Photo Credit: Getty Images, File]]>
<![CDATA[What Will the Weather Be Like on Easter?]]> Fri, 14 Apr 2017 12:48:26 -0400 http://media.nbcphiladelphia.com/images/213*120/Easter-Generic-Getty-1.jpg Easter is coming and so is a big warm-up this weekend.

Photo Credit: Getty Images]]>
<![CDATA[Montgomery County Business Has Roof Blown Off]]> Fri, 07 Apr 2017 06:47:32 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000020188562_1200x675_915971651629.jpg

A business in Montgomery County will be picking up the pieces Friday after strong storms ripped the roof off. NBC10's Drew Smith was there as damage was assessed.

<![CDATA[Storm Causes Trouble for Vehicles]]> Thu, 06 Apr 2017 23:41:06 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000020184763_1200x675_915732547823.jpg

With heavy storms hitting our region on Thursday, some drivers experienced some trouble. NBC10's Randy Gyllenhaal saw two cars stuck in mud just before the rain stopped.

<![CDATA['Tornado-Like' Conditions in Conshohocken]]> Thu, 06 Apr 2017 23:40:31 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000020184795_1200x675_915733059949.jpg

Residents in Conshohocken reported "tornado-like" conditions on Thursday as heavy storms hit our region. There, a roof blew off a building.

<![CDATA[Photos: Flooding, Damage From Thursday Storms]]> Thu, 06 Apr 2017 18:58:23 -0400 http://media.nbcphiladelphia.com/images/213*120/treedown23.jpg ]]> <![CDATA[Rain Picks Up But Doesn't Slow Down Everyone]]> Thu, 06 Apr 2017 12:53:00 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000020177015_1200x675_915476547908.jpg

NBC10's Katy Zachry reports on the rain and wind from Northeast Philadelphia.

<![CDATA[Lightning Strikes TV Station in Georgia]]> Wed, 05 Apr 2017 20:55:15 -0400 http://media.nbcphiladelphia.com/images/213*120/photoforgeorgia.jpg

See incredible footage of a lightning storm hitting the NBC affiliate in Columbus, Georgia, on Wednesday, April 5, 2017. The lightning knocked the network off the air for a few minutes, but no one was hurt.

@HURRICANENBC10]]> <![CDATA[First Alert Weather Blog: Heavy Rain and Flooding Thurs.]]> Tue, 04 Apr 2017 23:52:35 -0400 http://media.nbcphiladelphia.com/images/213*120/011016+rain+weather+generic.jpg

Look at the spin in the middle of the country! You can see it best in this “water vapor loop."

It takes a strong storm to show a swirl like that. And this time of year, we often see severe thunderstorms on one side of the storm, and snow on the other side. Yes, I said snow-and not just in the mountains. It was snowing in North Texas Tuesday!

A 1, 2, 3 PUNCH
Normally, as a large storm system approaches, there is an area, or line of thunderstorms that will move through our area. In this case, high-resolution computer models show multiple lines hitting Philadelphia in the same day!

Here are forecast maps of the newest, high-resolution model (called the 3km NAM)-at 6 a.m., 11 a.m., and 1 p.m. Thursday. The model clearly shows these as three separate lines. The red colors represent the heaviest rain (and likely thunderstorms).

This is pretty unusual. We would get a brief downpour and strong wind gust with each line.

Some parts of our area are much more vulnerable to flooding than others. It’s partly because they have gotten more rain in the past week. Another factor is the type of soil. The sandy soil near the coasts of New Jersey and Delaware can handle a lot more rain than areas far away from the coast. And in this case, Pennsylvania has had a lot more rain in the past week than South Jersey and Delaware.

Here is a map showing the amount of rain in a 6-hour period needed to produce flooding:

So, parts of the Lehigh Valley and other N&W suburbs of Philadelphia only need AN INCH of rain, and in a couple of spots, even less! That’s not too hard to do. And that is why we have issued a FIRST ALERT for our Pennsylvania counties and Mercer Co., NJ. for the flood threat.

While flooding is much less of a threat for South Jersey and Delaware, those very areas have much higher threats of severe thunderstorms. That means hail and potentially damaging winds. The Storm Prediction Center in Oklahoma has that part of our area in a “Slight Risk” for severe storms. I’ve never liked using the word “Slight” when talking about severe weather. It makes the threat seem trivial. But “Slight” is pretty significant when the SPC uses it.

So, we can expect a few rounds of showers and thunderstorms Thursday-some affecting the A.M. rush, and others even into the afternoon. And that’s why we have the FIRST ALERT for those areas.

First of all, Friday will be nothing like Thursday. There will be no severe thunderstorms. There probably won’t be any thunderstorms at all. But the weather won’t be good (that’s putting it mildly).

A look at the predicted surface map for 2 p.m. Friday tells the story. The LOW pressure center is near the PA/NY border. The green area is rain, which goes down into Maryland. And the blue area is (yes, it is) snow. Much of western PA, West Virginia, eastern Ohio, and western New York will be cold enough for snow-even in the middle of the afternoon.

The black lines are “isobars,” lines of equal pressure. The closer they are together, the stronger the wind. And they are close enough to suggest at least 15-20 mph winds. And the temperatures will be in the 40s according to the computer models. So, when you combine everything, you end up with not-very-“baseball-ish” weather. We should even be able to talk about wind chills, which will be closer to 40. With cloudy skies and occasional rain. Yuck. And the rain may not be heavy enough to postpone the game.

So, if you’re going to the home opener Friday (as I am), wear several layers of clothes under your Phillies gear, and have some rain gear with you, too. You’re much luckier if you have tickets for the weekend games, although Saturday night will be on the chilly side. But at least it won’t be raining-or windy.

Stay with the NBC10 First Alert Weather team for the latest forecasts, alerts and updates.

Photo Credit: AP
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<![CDATA[Heavy Rain Moves in, Get Details on Stormy Weather]]> Thu, 06 Apr 2017 14:49:46 -0400 http://media.nbcphiladelphia.com/images/212*120/Bill+Henley+WX46.JPG The NBC10 First Alert Weather team is tracking rain and storms for Thursday that bring the potential to be severe.]]> @BILLHENLEYUSA]]> <![CDATA[Weather Blog: Week Ahead Has April Showers]]> Tue, 04 Apr 2017 00:11:32 -0400 http://media.nbcphiladelphia.com/images/213*120/Weekly+Forecast1.png

Springtime is a season of transitional weather for our area and we'll certainly see a variety of conditions this week.

Monday, for example, is warmer but not as sunny as what we enjoyed Sunday. Winds shifted and it's those southerly winds that will warm us into the middle 60s while skies see a combination of sun and clouds.

The brief warming trend continues Tuesday, however, it doesn't last through the end of the week. High temperatures will be below normal Friday and Saturday.

Changes in the temperatures will be accompanied by at least a couple of rounds of spring showers and possibly thunderstorms.

The first storm to impact the tristate region already spread clouds into the northeast Monday. Rain, though, will hold off until later this evening and thunderstorms are possible overnight into early Tuesday morning.

The same large storm system will boost temps into the 70s and give us a chance of more showers and thunderstorms Tuesday.

After a nice and sunny day Wednesday, another storm system starts moving into the area Thursday morning. This second storm won't be as quick to move out -- clouds and the chance of showers are likely to linger into Friday. This will make for a chilly and breezy afternoon at the ballpark with a chance of scattered showers.

[[417988153, C]]

Finally, the week ends on a cool, but dry, note Saturday. And, Sunday is looking good with sunny skies and the beginning of a warming trend.

Photo Credit: NBC10
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<![CDATA[First Alert Weather Blog: Rain Could Pack Flooding Punch]]> Fri, 31 Mar 2017 10:52:43 -0400 http://media.nbcphiladelphia.com/images/178*120/rain+dc+boots.jpg March is moving out like a lion. The NBC10 First Alert Weather Team issued a First Alert for the potential of localized flooding Friday. Meteorologist Bill Henley tells us what to expect.

Photo Credit: Getty Images]]>
<![CDATA[Glenn Pays Tribute to His Father on His 93rd Birthday ]]> Wed, 29 Mar 2017 06:42:47 -0400 http://media.nbcphiladelphia.com/images/213*120/Morry-Schwartz.jpg


He was born and raised in South Philly.

He lived in a small apartment with FOUR other siblings, his parents, and two aunts “from the old country”.

His father was almost as wide as he was tall (54” waist), but my dad was slim and athletic his whole life.

He graduated from Drexel with a degree in Architecture.

He was training as a bombardier in New Mexico in 1945 when the war ended.

He worked as an architect for his whole career, for both private companies and eventually Jefferson University Hospital.

He once played racquetball with Charles Barkley and Moses Malone-and had no idea who they were.

He met my mother when they were children and were married just one month shy of 65 years

He had a major heart attack one month later, on what would have been their 65th anniversary. He had no heart problems prior to that.

[[417395403, C]]


It wasn’t until I was an adult that my father told me his “war story”. He was training as a bombardier in New Mexico in the last months of World War II. The crew flew every day as they were training. One day, my father fell ill with what was called “desert fever” and had to stay in the infirmary.

The rest of the crew flew their regular mission. The plane crashed and everyone was killed.

How did he go on without experiencing “survivor’s guilt? How could he not fear flying after that?


What do I remember about my dad growing up? He didn’t talk a lot, but often took work home. He would be drawing and reading while the rest of us were watching TV at night. But he loved what he did, and that was the best lesson he ever taught me-love what you do, and you won’t mind working hard.

He was a very good athlete, beating guys decades younger in racquetball. I followed his footsteps in this area (ask John Clark!). He loved to play ball, but not to watch it. How did I ever get my interest in watching sports? Or going to Phillies, Eagles, or Sixers games? One time he did take me to Convention Hall to see Wilt Chamberlain and the Philadelphia Warriors vs. Bill Russell and the Boston Celtics. The seats were great. The game was a classic. And he fell asleep in the middle of it!

[[417395703, C]]


If there was one thing he wanted me to remember, it was his favorite saying. And it was his main philosophy of dealing with the world. It is “The Serenity Prayer”, by American theologian Reinhold Niebuhr. You might know it as the slogan of Alcoholics Anonymous:

    God grant me the serenity to accept the things I cannot change,
    The courage to change the things I can,
    And the wisdom to know the difference.

It took a long time for me to take that saying to heart, but my father accomplished his mission: every time I faced a challenge, I thought of the prayer.


It’s one thing to tell your children to be honest and to do the right thing-it’s another thing to “practice what you preach”. I’ve told this story to others in front of him, but he didn’t remember it. It was just a part of his personality, so it was nothing special to him. It was to me.

Dad took my 13 year old cousin and me (same age) to a drive-in movie (yes, they actually did exist). It was just the three of us. As we reached the toll booth, the cashier looked into the car and said to my father: “One adult and two children?” My father looked at the sign that said “children 12 and under” and said: “No-three adults.” It was such a simple (and unnecessary) thing to do, but it was the lesson of a lifetime.

[[417395483, C]]


My mother was the emotional one of the family. My father was the opposite, and he had experience handling tragedy in his past. The crash of his crew’s bomber in 1945 was not the only one. His younger brother (“the charming and handsome one”, he would say) died of an overdose in the early 60s.

The other event happened out of the blue. His only daughter, my younger sister Debbie, died suddenly in 1996 at the age of 39. We saw her on a Sunday, perfectly fine. But she died a mere two days later, leaving children ages 2 and 4. Of course, my mother was devastated, and never fully recovered. But my father’s calm, and patience, and optimism got them through a horrible time. Their devotion to their precious granddaughters also kept them going. And his attitude helped me get through it, too.

My father says he is proud of me. It’s because he made me that way.

Photo Credit: Glenn Schwart
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@KRYSTALKLEI]]> <![CDATA[Rainy Stretch With Roller Coaster Temperatures Continues]]> Tue, 28 Mar 2017 00:10:40 -0400 http://media.nbcphiladelphia.com/images/213*120/rain-generic-GettyImages-456729820.jpg

Temperatures have been on a roller coaster for what seems like months. The most recent ride? A high of 77 degrees at the Philadelphia International Airport Saturday, followed by a high of only 45 degrees Sunday, and forecast temperatures in the low 70s by tomorrow. In addition, it’s been a rainy stretch of days. Let’s break down exactly what’s going on with our weather pattern.

Weekend Rise and Fall

This past Saturday we saw temperatures climb all the way to the upper 70s, with just isolated showers across the area.

Why? A large storm was set up to the west of our region. North of us was a boundary layer (this one a cold front) that was connected to this storm. That layer was dividing the cold air from the warm air trying to surge in from the southwest. Our area was under the warm air “zone”. Meaning, the cold air was kept north, and with southwest winds, our atmosphere was being fed warmth to boost our temperatures well above average (21 degrees above average in Philly, to be exact).

But, all good things must come to an end. And they did, quite quickly. Overnight Saturday into Sunday morning, the winds shifted direction. Take a look at the wind map from one model. It shows the winds coming almost directly from the east (the non-tail end of the barbs points in the direction the winds are going). An east flow forces chilly ocean air atop us. As the winds shifted, this led the way to the cold front slinking southward across our area.

[[417222633, C]]

The result? A high of only 45 degrees in Philadelphia (as in 11 degrees below average and 32 degrees colder than the previous day).

As we sat ahead of the storm center, which was creating severe thunderstorm threats to central and southern portions of the country, we also sat in a rather moist set-up. That means we had plenty of moisture in the sky (thick clouds) all the way down to the surface (something we’ll sometimes refer to as high dewpoint temperatures)   So, we were able to tap into periods of light rain showers and misting. However, not much steady rain was experienced over the weekend.

Monday Return to Warmth

Remember that warm air that was surging over the region from the southwest on Saturday? Well, it made a comeback quickly on Monday.

Winds shifted direction again Monday morning. Take a look at the wind map below for Monday. It shows the barbs constantly flowing in from the southwest. A warm air pump!

[[417222773, C]]

In addition, a warm front stalled over the southern half of the region.
As a result, especially in southern zones across our region, temperatures made a return to the 60s and even 70s. Temperatures were cooler farther north due to the stalling of the warm front. The warmth continues Tuesday. In fact, Tuesday morning temperatures will be quite mild in the 50s, and highs will again be spread from north to south. Southern zones should see 70s, again. Mid 60s are possible for Philadelphia. Lower 60s or upper 50s for northern most spots.

Scattered Thunderstorm Potential

With warm air across the region, some isolated to scattered thunderstorms are possible as yet another system passes just to our south Tuesday afternoon. Isolated showers may cross the Delaware Valley in the morning Tuesday, but with the storm centers’ passage late day, enough energy across the region could bring some spotty thunderstorms to the area. These storms are not expected to be severe. The best chance for thunderstorms will be the warmest locations, south.

Here’s a look at one model projection for the late day thunderstorm potential:

[[417222823, C]]

Notice the small spots of orange and red on the map near us. This indicates the scattered nature of the storms.

Overall, we’ll remain cloudy through Tuesday, but finally see sunshine breakout Wednesday. Temperatures Wednesday will also take one last tumble, although not as grand. Temperatures are forecast in the upper 50s and low 60s.

More rain to come by late week! We’ll get into more detail on that in the days to come.

Stay with the NBC10 First Alert Weather Team for the latest weather updates including alerts, maps and forecasts.

Photo Credit: Getty Images
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<![CDATA[Periods of Rain Stretch Across Several Days]]> Sat, 25 Mar 2017 17:41:48 -0400 http://media.nbcphiladelphia.com/images/191*120/rain-generic-umbrella-raindrops.jpg

Pennsylvania, Delaware and New Jersey fall under a rainy period over the next several days. This period isn’t a constant, widespread rain. Instead, it’s a spottier on-again, off-again forecast that will last through Tuesday.

Warm Saturday

A large storm system has been driving across the country, and is forcing warm air our direction ahead of the cold front that crosses through the Midwest Saturday morning. With a southwest flow, temperatures began mild Saturday and will continue warmer than average into the afternoon. Temperatures are forecast to hit the low 70 over portions of Philadelphia and areas south, such as South Jersey and Delaware.

Through the afternoon, a surface cold front will slip to the south and a few disturbances in the atmosphere will ripple across our region. This will allow for continued periods of light and spotty rain into the evening. As the front passes overnight (called a backdoor front when it passes from the north/northeast), a brief period of more widespread light rain is possible. Overall, Saturday will still be a great day to get outdoors.

Cooler, Damp Sunday

Temperatures will fall Saturday night as the frontal passage allows winds to shift from a southwest flow, to a more easterly push. When winds come from the east, they pick up the cool air characteristics off the ocean water. The winds will also strengthen, bringing breezy gusts up to around 25 mph to the region. The cold front passage also allows colder air to spill into the area from the north. This will result in very little warming through the entire day. From low to mid 40s in the morning to only upper 40s for many in the afternoon Sunday.

Light spotty showers pass Sunday morning, especially north. Along the Poconos, some brief freezing rain may occur. The rest of the day will be damp and mostly cloudy, with continued showers developing late day into the night as the storm system that was to the west begins to near the Delaware Valley. Take a look at the picture below for Sunday evening. The storm center is still to the northwest, but the area of rain is beginning to move in (green).

[[417087983, C]]

Best Days for Rain

The best day for rain comes Monday, as the system actually passes across the region. The best chance of rain will be north and west of Philadelphia, but most areas should see at least some scattered showers. The rain will be steadiest in the morning, and scattered through the later day and night.

At the same time, yet another rainy system moves in from the west. You can see the center near Missouri and Illinois:

[[417087993, C]]

Like Monday, Tuesday will see periods of more widespread rain. Again, the showers will be scattered and light to start in the morning. Through the early afternoon the area of rain may expand across the area, and linger into the early evening. This will mostly be light showers, as the green on the map below is light in color without pockets of yellow or orange (heavier activity indicator). 

[[417088063, C]]

By Wednesday morning, the moisture should move out and we’ll see several days of dry and sunnier conditions. Temperatures remain Spring-like, hovering around the 50s and 60s during the work week. Another wet period is possible by the weekend, more on that in the days to come!

Photo Credit: The Associated Press
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<![CDATA[Rain Or Not Today? Depends What Town You Live in]]> Tue, 21 Mar 2017 10:54:31 -0400 http://media.nbcphiladelphia.com/images/213*120/WEB+Early+WX+Frame+4_22968245.jpg Rainfall will prove sporadic for Philadelphia, Delaware and New Jersey communities Tuesday, but luckily we have the neighborhood by neighborhood breakdown.]]> <![CDATA[Toddler Recovering After Special Snowstorm Escort to Hospital]]> Fri, 17 Mar 2017 00:25:10 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019862911_1200x675_900064835747.jpg

A Pennsylvania toddler is recovering after a very special escort through the snowstorm for emergency medical help.

<![CDATA[Drivers Dodge Ice Chunks]]> Fri, 17 Mar 2017 00:04:00 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019862883_1200x675_900042819791.jpg

Tuesday's heavy sleet, snow and ice packed down onto the tops of vehicles, making it difficult to remove, but it's been flying off causing dangers on the roadways. NBC10's Drew Smith talked to driver show escaped injury when their cars wer damaged by flying ice.

<![CDATA[Third Day of Digging Out in Lehigh Valley]]> Thu, 16 Mar 2017 18:08:57 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019859579_1200x675_899776067553.jpg

Students in the Lehigh Valley had a third day off from school on Thursday. NBC10’s Randy Gyllenhaal reports from Macungie.

<![CDATA[Huge Ice Chunk Flies Across NJ Highway, Smashes Woman's Car]]> Thu, 16 Mar 2017 19:58:46 -0400 http://media.nbcphiladelphia.com/images/213*120/flying+ice+nj.jpg

A woman was shaken but miraculously physically unscathed after she says a huge chunk of ice flew off a box truck and smashed her windshield on the Garden State Parkway Thursday. 

Authorities got a report about the accident near mile marker 136 on the southbound side of the highway shortly before 11:30 a.m. The woman tells NBC 4 New York she was driving along in the middle lane when the ice came flying off a truck moving on the opposite side of the roadway.

She drove about a mile with the decimated windshield before she was able to pull over, she said. Her father came to her rescue. 

"I had no idea what to do or where to go," said Rachel Krasnanski. "I just put my hazards on and tried to get over as fast as I could." 

Her father said he was just glad she was OK. 

By law, motorists are required to remove all ice and snow from their vehicles before driving, especially from the hoods, windows and roofs. Drivers who fail to do so face fines up to $1,000 for failing to do so.

It wasn't clear if police expected to track down the driver of the box truck.  

Photo Credit: NBC 4 New York]]>
<![CDATA[Beware of Possible Falling Ice in Center City]]> Thu, 16 Mar 2017 13:43:29 -0400 http://media.nbcphiladelphia.com/images/203*120/Caution+Falling+Ice+Philly+2.JPG

Beware of potentially dangerous falling ice.

That’s the message Philadelphia has for people as sun and warming temps could cause ice to fall from city high-rises. And, city agencies want building owners and managers to take evasive actions to prevent any potential injuries.

"The Department of Licenses and Inspections and the Streets Department are advising mid-and high rise building owners and managers to monitor their building facades and ledges for ice build-up," the city said in a news release Wednesday. "Ice that has melted enough to break free and fall from building surfaces can pose a threat to passersby below. Building owners are advised to take precautions such as placing barricades and warning signs around potential fall zones."

On Wednesday he Lowes at 12th and Market streets in Center City had a "Caution: Falling Ice" sign out front and had part of the sidewalk blocked off a day after a nor'easter dumped half a foot of heavy snow and ice on the city.

Some streets in the area were closed midday Thursday as crews knocked off remaining ice on the historic hotel.

The melt was greater on Thursday as sunshine and temps in the mid-30s could cause more ice to become dislodged.

The city said that SEPTA buses and sidewalks could be rerouted if there are falling ice concerns.

"Pedestrians are advised to be cautious and respect any temporary barricades erected on the sidewalk," the city said.

Photo Credit: NBC10]]>
<![CDATA[Philly Students, Teachers Deal With Icy Conditions]]> Thu, 16 Mar 2017 06:59:21 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019841576_1200x675_898808899679.jpg

Philadelphia schools opened on time on Wednesday despite the icy conditions. NBC10’s Rosemary Connors looked into the tough commute for students and teachers.

<![CDATA[Is Your Street Coated in Ice?]]> Thu, 16 Mar 2017 06:40:45 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019848834_1200x675_899315779714.jpg

Some residents in the Philadelphia region, including along Pensdale Street in Manayunk.

@HURRICANE10]]> <![CDATA[How Much Snow Did Philly Really Get? ]]> Thu, 16 Mar 2017 00:09:37 -0400 http://media.nbcphiladelphia.com/images/213*120/City-Hall-Snow-Lead.jpg

We can measure how tall we are.
We can measure what our shoe size is.
We can measure how far it is from Philadelphia to the Jersey Shore.
We can measure how fast a runner goes from home to first base.
In weather, we can measure exactly what the temperature is.
We can measure the peak wind gust and the barometric pressure.
And we can measure just how much rain fell (as long as it wasn’t so windy that it was raining sideways).

But we can’t measure snow-not precisely.  That doesn’t seem right, does it? We just stick a ruler into the snow and see how high it goes. Even a 2nd grader can figure that out.

But how much has fallen when it has turned to sleet or rain, which compresses the snow? Well, it depends on how you measure it, when you measure it, and where you measure it.

The official Philadelphia snowfall was reported as 6.0”. Tuesday evening, after the snow had ended, the official daily climate report had a different number: 8.3”. And when I came back into work Wednesday morning, the official number was back to 6.0”. Why did they change it? How did they decide how much to change it by? And might this be changed again in the future?

Why do I care? It’s not because a higher number makes my forecast better. We predicted 6-10” for Philadelphia, and getting 6” was just fine. It seems every other forecast was for more.

I care because weather history is important to me. It’s so important, I co-wrote a book on Philadelphia weather with Dr. Jon Nese, now a professor at Penn State.

[[416289423, C]]

We (mostly Jon) went through a LOT of trouble to research data going back hundreds of years, including explanations of changes in where the official Philadelphia measurements were taken. This data is what meteorologists and climate researchers will be looking at in the years, and decades, and millennia to come. How will they know that some of these snow records are basically ESTIMATES?

When I was an intern at the National Hurricane Center in Miami ages ago, I had to train at the Miami Airport with the official observers on how they did their job. (I swear this is true, word for word)….We were all inside the building, when we saw heavy rain falling outside. I asked the observer: “How do you know the exact time the rain starts.” He replied: “Someone usually comes in and tells me.” Nice.

1.    Believe it or not, official snowfall in Philadelphia was measured IN NEW JERSEY for nine years (at National Park)! The Inquirer and Philly.com’s Tony Wood just wrote a terrific explanation about this and other snow measurement mysteries.

2.    The new observers at the airport were trained using a 14-page instruction document. Are you kidding-14 pages? Don’t you just stick a ruler in the ground?

3.    There are “snow boards” that all observers are supposed to use, taking observations every 6 hours (including one at 2 a.m.). The numbers are added up, since melting (or rain, or icing, or wind) could reduce the amount if they waited until the storm was over.

4.    There was sleet and freezing rain with this storm. This made measurements very difficult. If this happens, the manual says: “creativity may be needed to make a snow depth measurement.” What? Creativity-in measuring something?

So, the National Weather Service looked at other measurements in Philadelphia, which were lower than the 8.3” and decided to go back to the 6.0”. That was closer to the 6.8” at the nearby Office of Emergency Management. So, who’s to say the OEM’s “creativity” was done properly? And what does the observer at the airport think about having his report altered by more than 20%? And how many other places had more snow fall than they reported?

If a storm is all snow, probably “yes." Amateur observers are told to measure the snow in three places and average them. They probably don’t use snow boards.

But when sleet and/or freezing rain is part of the storm (which is most big winter storms in Philadelphia), there are questions. A study had to be done after the “Blizzard of ‘96” to verify that we really did get 30.7” (the previous record was 21.3”). The verdict was “yes, it was right”.

I realize this is all trivia to many of you. But did you realize how non-scientific this is? We move instrument locations, build new buildings near the instruments, and pave roads near the instruments. This is why many big city readings are excluded in climate research. There are plenty of other locations in the country that stay the same. Good thing they do.

Stay with the NBC10 First Alert Weather Team for the latest weather updates including alerts, maps and forecasts.

[[416216443, C]]

Photo Credit: Trevor Harmon
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<![CDATA[Snow Storm Aftermath in Roxborough]]> Wed, 15 Mar 2017 16:46:40 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019834564_1200x675_898480195907.jpg

NBC10’s Matt DeLucia reports from Roxborough with a look at how people are dealing with the remains of Tuesday’s snow storm.

<![CDATA[Photos: Nor'easter Brings Snow, Sleet, Floods]]> Wed, 15 Mar 2017 16:47:37 -0400 http://media.nbcphiladelphia.com/images/180*120/GettyImages-653393496.jpg A major March nor'easter brought rain, sleet and snow to the region. Here are photos from New Jersey, Delaware and Pennsylvania.

Photo Credit: Getty Images]]>
<![CDATA[South Jersey Storm Damage]]> Wed, 15 Mar 2017 16:44:49 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019834875_1200x675_898500163942.jpg

NBC10’s Pamela Osborne reports from South Jersey where Tuesday’s snow storm has left problems.

<![CDATA[Storm Changes Disney Plans for Seniors From 2 Area Schools]]> Thu, 16 Mar 2017 06:46:53 -0400 http://media.nbcphiladelphia.com/images/213*120/Laura+Schafer+Orlando+Disney+World+Perkiomen+Valley.jpg

Mother Nature couldn’t stop two classes of 2017 from enjoying one last trip with their high school classmates to sunny Florida.

Students from Perkiomen Valley High School in Collegeville, Montgomery County, got some extra time in warmer weather thanks to the Nor’easter that crippled the East Coast.

"It was kind of crazy because we didn't know when we were going to get home," said Perk Valley student Laura Schafer.

With Philadelphia International Airport a ghost town, it quickly became apparent that Schafer and her friends would get extra time in the Floridian warmth.

"Some people are ready to go but some people are excited because we got so much extra time," the Schwenksillve teenager told NBC10 Wednesday.

Around 160 members of the Perk Valley senior class and their 20 chaperones,  including the principal and his wife, had been in Orlando since Saturday enjoying Universal Studios and Disney World as part of the Collegeville school’s senior trip. Everything came to an abrupt stop when their Tuesday flight home was canceled.

Luckily, the Perk Valley party was able to switch rooms at Disney's All-Star Sports Resort with another local school whose trip was similarly delayed because of the storm.

Seniors from the Boyertown Area Senior High School were set to arrive Tuesday, but fate had other plans.

"They actually switched room because Boyertown High School had to cancel their flight because of the snow," said Susan Barry Schafer, whose daughter Laura, attends Perk Valley.

The change gave Schafer and her classmates extra time to ride the attractions at Disney World Tuesday night and head to Disney Springs Wednesday before their flights.

Schafer and her mom praised trip organizers for communicating changing plans and alleviating concerns over the plan to get home. 

While Perk Valley students stayed in Florida, Boyertown students got a new itinerary that pushed their trip to Orlando back to Wednesday night to Sunday after some tense moments wondering if the trip wouldn’t happen due to the storm. [[416102133, C]]

"That was the biggest scare," said Cathy Sullivan Saxon, whose daughter, Georgi, is a senior at Boyertown.

Everyone involved praised trip organizers for including trip insurance in the price (more than $1,000, subsidized by fundraising) meaning that no one would have to pay more despite the changed plans.

But now the vacation is over. Perk Valley students were told to be prepared to return to class Thursday.

"I’m kind of hoping that the plane is delayed, at least maybe two or three hours so we get back too late to go to school tomorrow," Schafer joked.

So what was the best part of the trip? For her it was meeting new friends before graduation.

"I’ve made new friends on this trip, we’ve been hanging out all the time, we’ve been together nonstop, we’ve like constantly laughing," Laura said. "It’s honestly been one of the best weeks of my life."

No one answered the phone at Boyertown high school Wednesday -- the school was closed for a second day -- while a Perk Valley spokeswoman didn't return NBC10's call for comment.  [[416147603, C]]

Photo Credit: Lauara Schafer]]>
<![CDATA[Bitter Cold, Wind & More Snow]]> Wed, 15 Mar 2017 13:33:09 -0400 http://media.nbcphiladelphia.com/images/213*120/3711d1aff95e49fa87ff52eb83350f63.jpg Frigid cold temperatures and strong gusty winds and even the possibility of snow showers for Wednesday afternoon. This as we are still feeling the effects of Tuesday's storm. NBC10 First Alert Weather meteorologist Bill Henley breaks down what to expect the day after a nor'easter dumped snow and ice on much of the area.

Photo Credit: camdenmjh]]>
<![CDATA[Icy Conditions, Wind Bring Down Limbs, Knock Out Power]]> Wed, 15 Mar 2017 07:34:13 -0400 http://media.nbcphiladelphia.com/images/205*120/Audubon+Tree+on+Wires.JPG

The snow, ice and wind combined has knocked down trees causing thousands of power outages throughout the Philadelphia area Tuesday. NBC10’s Pamela Osborne is in Audubon, Camden County where a tree snapped in half and brought down power lines causing power troubles that lasted into Wednesday.

Photo Credit: NBC10]]>
<![CDATA[Roads Difficult to Clear Due to Ice]]> Wed, 15 Mar 2017 07:09:53 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019829949_1200x675_898271299957.jpg

One of the biggest challenges after the winter storm has been moving the snow before it freezes solid due to frigid temperatures. NBC10’s Matt DeLucia is in Manayunk with a look at some roads that are still frozen over.

<![CDATA[Philly Mom Plays in Snow Dressed as T-Rex]]> Wed, 15 Mar 2017 06:41:26 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019830066_1200x675_898274883960.jpg

A Philly mom decided to spend her snow day dressed as a T-Rex. Simi Chung put on the costume to play in the snow with her daughter.

<![CDATA[Postal Service Needs Your Help to Deliver Mail After Storm]]> Wed, 15 Mar 2017 05:55:35 -0400 http://media.nbcphiladelphia.com/images/160*120/PHOTO129039551169958454477main.jpg

The U.S. Postal Service wanted to make sure they could deliver the mail Wednesday by asking residents to do something: shovel and salt.

If you don’t, you might not get your mail as the postal service looks to protect mail carriers from slips and falls.

"No one wants to inconvenience the customer," South Jersey/Delaware district manager Sharon Young said. "However, we must ensure the safety of our employees."

The postal service asked that people clear sidewalks, porches, steps and walkways of snow and ice so that everyone can be safe after inches of snow and ice fell in much of the area.

"The best way to avoid injury is prevention," Young said. "Please help our employees provide the best service they can, as safely as possible. Your cooperation is most appreciated and will help us provide timely delivery of your mail." [[416102133, C]]

The Postal Service offered these tips to ensure the mail gets where it needs to go:

• Clear enough snow from curbside boxes to allow mail trucks to approach the box, deliver the mail and to drive away from the box without danger of the need for backing.
• Walkways should be cleared of snow and ice and allow enough traction to avoid slips, trips or falls.
• Steps should also be kept clear of ice and snow and in good repair so as not to cause injury to the letter carriers or others who visit the customer’s home.
• Overhangs should be clear and free of snow and ice to avoid injury.

If a mail carrier feels a situation is unsafe, they could hold the mail until later, said the postal service.

Photo Credit: Donna Laniauskas]]>
<![CDATA[How to Walk on Ice]]> Wed, 15 Mar 2017 06:36:32 -0400 http://media.nbcphiladelphia.com/images/213*120/DIT_WEA_WALKONICE2_031417-148952203139000001.jpg

The trick to walking safely on ice is to walk like a penguin. Infographic by Tablet Infographics  


<![CDATA[Jersey Shore Deals With Flooding]]> Wed, 15 Mar 2017 06:34:45 -0400 http://media.nbcphiladelphia.com/images/213*120/WCAU_000000019814507_1200x675_897629763852.jpg

Emergency crews were busy making water rescues along the New Jersey coast line due to Tuesday's nor'easter.