Heavy Rainfall, Flooding, And Severe Thunderstorm Threats From The Mid South To The Great Lakes Today And Tonight

A slow moving low pressure system and cold front will bring the potential for severe thunderstorms capable of producing damaging winds and isolated tornadoes from portions of the Mid South to the Midwest and Great Lakes today and tonight. Heavy rainfall could also lead to flooding concerns. The severe weather threat will shift to the Mid Atlantic and Northeast on Wednesday.
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Last Update: 615 PM EDT Tue Sep 25 2018

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Philadelphia, PA Local Forecast Office

15NM E Lewes DE

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT...
Synopsis: A warm front will lift north of the area this evening. A cold front will move across the East Coast later on Wednesday, and stall south of the area as high pressure builds out of the Midwest and into New England Thursday. A weak area of low pressure is forecast to move along the front to our south on Friday, then another cold front is forecast to move across the East Coast Saturday. High pressure builds across the Northeast Saturday night into Sunday, then offshore on Monday.

Tonight
S winds 5 to 10 kt. Seas 5 to 8 ft, subsiding to 4 to 6 ft after midnight. Swell mainly from the E with a dominant period of 8 seconds. a slight chance of tstms early this evening. A chance of showers.
Wed
SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt late. Seas 4 to 6 ft. Swell mainly from the SE with a dominant period of 9 seconds. a chance of showers and tstms late.
Wed Night
SW winds 10 to 15 kt with gusts up to 20 kt, becoming N with gusts up to 20 kt late. Seas 4 to 6 ft. Swell mainly from the SE with a dominant period of 8 seconds. tstms likely in the evening. Showers likely.
Thu
NE winds 15 to 20 kt, diminishing to 10 to 15 kt late. Gusts up to 25 kt. Seas 3 to 5 ft. Swell mainly from the SE with a dominant period of 8 seconds. showers likely early in the morning, then a chance of showers in the late morning and afternoon.
Thu Night
NE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt after midnight. Seas 3 to 4 ft. A chance of showers.
Fri
E winds 5 to 10 kt, becoming N in the afternoon. Seas around 3 ft. A chance of showers.
Fri Night
N winds around 5 kt. Seas around 3 ft. A chance of showers in the evening.
Sat
N winds 5 to 10 kt. Seas 3 to 4 ft.
Sat Night
N winds 5 to 10 kt. Seas 3 to 4 ft.
Sun
NE winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to 4 ft.
Sun Night
SE winds around 5 kt. Seas 3 to 4 ft. winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 615 PM EDT Tue Sep 25 2018
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