Significant Storm Bringing Widespread Winter Weather and Heavy Rainfall Across the Eastern Half of the Country

A storm system moving into the Eastern parts of the country is bringing heavy snow across the Great Lakes and into the Mid-Atlantic and Northeast today. There is also the potential for significant ice accumulations across the northern Mid-Atlantic. To the south, heavy rainfall is producing flash flooding, and river flooding, from the Ohio and Mississippi Valleys to the Deep South.
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Last Update: 1219 PM EST Wed Feb 20 2019

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...
Synopsis: A complex area of low pressure and frontal system will move north through the eastern United States bringing the area a mix of wintry precipitation today into tonight. High pressure will build into the area for Thursday and Friday. Strong low pressure moving across the Great Lakes should bring mostly rain to the region for much of Saturday and Sunday. High pressure is forecast to return early next week.

This Afternoon
SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 9 seconds. Snow early, then snow and rain late. Vsby 1 nm or less.
Tonight
SE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight, then becoming SW late. Gusts up to 25 kt. Seas 2 ft or less, then 3 to 5 ft early in the evening. Swell mainly from the SE with a dominant period of 5 seconds. rain. Vsby 1 nm or less early in the evening.
Thu
W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Swell mainly from the SE with a dominant period of 8 seconds. a chance of rain early in the morning.
Thu Night
NW winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Swell mainly from the S with a dominant period of 8 seconds.
Fri
NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas around 3 ft in the morning, then 2 ft or less.
Fri Night
NW winds around 5 kt, becoming NE after midnight. Seas 2 ft or less.
Sat
SE winds 5 to 10 kt. Seas 2 ft or less. Rain likely in the afternoon.
Sat Night
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less, then 3 to 5 ft after midnight. Rain.
Sun
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain likely.
Sun Night
W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 7 ft.
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Last Update: 1219 PM EST Wed Feb 20 2019
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