Heavy Rain and Flooding in the Southern Plains to the Great Lakes

Several days of heavy rainfall will lead to flash flooding and river flooding from the Southern Plains to the Southern Great Lakes. A band of freezing rain is forecast across portions of the Southern Plains into the Middle Mississippi Valley.
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Last Update: 645 AM EST Wed Feb 21 2018

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Philadelphia, PA Local Forecast Office

15NM E Lewes DE

Marine Zone Forecast


...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING...
Synopsis: Unseasonable Bermuda High pressure off the East Coast will provide one more day of record-breaking warmth over the mid-Atlantic region. A cold front will push south across the area tonight and then stall to our south. Several waves of low pressure will move northeast along this roughly stationary frontal zone, resulting in periods of rain from Thursday through Sunday. Another cold front will cross the area late on Sunday followed by high pressure building in for the first part of next week.

Today
SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Swell mainly from the SE with a dominant period of 6 seconds. Widespread fog this morning with vsby 1 nm or less.
Tonight
SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight, then becoming N late. Gusts up to 20 kt. Seas 3 to 4 ft. Swell mainly from the S with a dominant period of 6 seconds. A chance of showers late in the evening. A chance of rain after midnight.
Thu
NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Swell mainly from the S with a dominant period of 6 seconds. A chance of rain.
Thu Night
NE winds around 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Swell mainly from the S with a dominant period of 7 seconds. A chance of rain.
Fri
NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 4 to 6 ft. A chance of rain.
Fri Night
SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of rain in the evening.
Sat
SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of rain.
Sat Night
SE winds 5 to 10 kt. Seas 3 to 5 ft. Rain likely.
Sun
S winds 10 to 15 kt, becoming SW in the afternoon. Seas 3 to 5 ft. Rain likely.
Sun Night
W winds 10 to 15 kt, becoming NW after midnight. Seas 3 to 5 ft. A chance of showers in the evening.
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Last Update: 645 AM EST Wed Feb 21 2018
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