River Flooding Continues to be a Concern for Multiple Regions across the Country

Recent rainfall has increased the threat of Moderate to Major flooding along rivers in the Mid-Atlantic, especially Virginia and Maryland, over the next few days. Rainfall combined with snowmelt is also fueling Moderate-to-Major flooding in the northern Rockies and northern Intermountain West.
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Last Update: 1007 PM EDT Sun May 20 2018

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast


Synopsis: A cold front approaching from the northwest will pass through our region this evening. The boundary is forecast to stall to our south on Monday. Weak low pressure is expected to move from the eastern Great Lakes to New England on Tuesday and Tuesday night and it should pull another cold front through our region on Wednesday. The front is anticipated to stall to our south as weak high pressure influences our weather on Thursday and Friday. The boundary is expected to return northward as a warm front over the weekend.

Rest Of Tonight
SW winds 5 to 10 kt, becoming N. Seas 3 to 5 ft. Swell mainly from the SE with a dominant period of 8 seconds. a slight chance of showers and tstms late this evening.
Mon
NE winds 5 to 10 kt. Seas 3 to 4 ft. Swell mainly from the SE with a dominant period of 8 seconds.
Mon Night
SE winds around 5 kt. Seas around 3 ft until early morning, then 2 ft or less. Swell mainly from the SE with a dominant period of 8 seconds.
Tue
SE winds 5 to 10 kt. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 8 seconds. a chance of showers. A chance of tstms in the afternoon.
Tue Night
SW winds around 10 kt. Seas around 3 ft. A chance of showers and tstms.
Wed
W winds 5 to 10 kt. Seas around 3 ft.
Wed Night
NW winds 5 to 10 kt. Seas around 3 ft in the evening, then 2 ft or less.
Thu
N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 ft or less.
Thu Night
SE winds 5 to 10 kt, becoming SW after midnight. Seas 2 ft or less.
Fri
SW winds 5 to 10 kt. Seas 2 ft or less.
Fri Night
SW winds 10 to 15 kt. Seas 2 ft or less. 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: 1007 PM EDT Sun May 20 2018
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