Central U.S. Severe Storms and Heavy Rain; Western Fire Weather Threats

A strong system will produce a swath of impacts. Severe storms with large hail, damaging winds, and a couple of tornadoes will be possible in the south and central Plains. Heavy rain could cause flash flooding in the Mid Mississippi Valley. Mountain snow will develop in the Rockies. Critical fire weather threats are expected across northern California and the Southwest.
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Hazardous Weather Conditions

Last Update: 403 AM EDT Sat May 8 2021

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast


Synopsis: A weak area of low pressure and associated cold front will shift to our east today, then weak high pressure follows for tonight into early Sunday. Low pressure is forecast to track across our area Sunday night into Monday morning, with a cold front crossing our area during Monday. Strong high pressure builds in later Tuesday and Wednesday before weakening and shifting offshore during Thursday. Low pressure moving across the southern states Thursday may then track near our region Friday.

Today
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less, then around 3 ft this afternoon. Isolated showers early this morning, then scattered showers late this morning and afternoon. Swell mainly from the W with a dominant period of 4 seconds.
Tonight
NW winds 15 to 20 kt, diminishing to 10 to 15 kt late. Gusts up to 25 kt. Seas 3 to 4 ft. Swell mainly from the NW with a dominant period of 5 seconds.
Sun
W winds 5 to 10 kt with gusts up to 20 kt, becoming S 10 to 15 kt with gusts up to 25 kt early in the afternoon, then increasing to 15 to 20 kt with gusts up to 25 kt late. Seas 3 to 4 ft. Swell mainly from the E with a dominant period of 8 seconds.
Sun Night
S winds 15 to 20 kt, becoming SW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft, building to 6 to 7 ft after midnight. A chance of rain late. Swell mainly from the S with a dominant period of 6 seconds.
Mon
SW winds 15 to 20 kt, becoming W in the afternoon. Gusts up to 30 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the afternoon. A chance of rain in the morning, then a chance of showers in the afternoon.
Mon Night
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers.
Tue
NW winds around 15 kt. Seas 3 to 4 ft.
Tue Night
NW winds 15 to 20 kt. Seas 3 to 4 ft.
Wed
NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft.
Wed Night
W winds 5 to 10 kt. Seas 2 ft or less.
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ABOUT THIS FORECAST

Last Update: 403 AM EDT Sat May 8 2021
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