NBC10 First Alert Weather: Timing of Today’s Severe Thunderstorms

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Joseph Kaczmarek
Audience members sit under umbrellas as Harold Melvin's Blue Notes perform during the Wawa Welcome America July 4th Concert, Monday July 4, 2016, on the Ben Franklin Parkway in Philadelphia. (NBCPhiladelphia/ Joseph Kaczmarek)
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The NBC10 First Alert weather team called a First Alert for strong to severe thunderstorms expected across the region Saturday afternoon. With high humidity and warm temperatures in the afternoon, a cold front passage is expected to fire off thunderstorms from west to east. The biggest concern with these storms will be damaging winds, brief heavy downpours and intense lightning. The storms may begin in the Lehigh Valley, Berks County and the PA Suburbs around 3-5 p.m. Take a look at the high resolution future model below. The deeper the reds and oranges, the stronger the storms.
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The storms will pass through Philadelphia, and along the I-95 Corridor between 5-7 p.m.
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By 6-9 p.m., the storms should pass through the rest of Delaware and New Jersey. They’re likely to weaken over the shore.
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The concert and fireworks show at Penn’s Landing this evening may, in-part, be disrupted by the storms. Bring an umbrella or rain slicker if you’re heading out this afternoon, and always make sure to have an indoor options readily available when storms strike.
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It will be hot and humid over the next several days, too. Staying hydrated and seeking shade will be important when you’re out and about. Good news, though! Conditions look much drier Sunday through Tuesday, with only isolated showers possible Monday.
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The shore looks nice this weekend, too! Make sure you’re layering on the sunscreen.
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By Monday evening, temperatures will fall into the 80s—Just in time for the Philly POPS concert. If you’re heading out to the event at Independence Hall, make sure to keep a water bottle in hand.
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As for Independence Day? Models have continues to trend toward a drier solution. So, we’re calling for partly cloudy conditions. It will be hot and humid, though. Here’s the outlook:
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Moral of the story? No day is a washout, but Saturday afternoon and early evening could see dangerous weather. You should be prepared to stay indoors when the line is passing your neighbourhood. In the days to come, it will be hot and humid—but dry! Enjoy the weekend, and stay up-to-date on the forecast on air, online, and with our app. It’s free!
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