Heavy Rainfall and Flooding in the Southwest and Along the East Coast

A multi-day heavy rainfall event is set to begin across New Mexico into west Texas Tuesday through Wednesday. Flash flooding and debris flows in the vicinity of burn scars will also be possible. A strong coastal low will develop offshore of the Mid-Atlantic coast midweek, bringing heavy rainfall, strong winds and coastal flooding to much of the East Coast through Friday. Read More >

Hazardous Weather Conditions

Last Update: 401 PM EDT Mon Sep 21 2026

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... ...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY

Tonight

NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave detail: E 5 ft at 8 seconds and NE 4 ft at 5 seconds. A slight chance of showers this evening. A chance of showers after midnight, then a slight chance of showers late.

Tue

NE winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 5 to 7 ft, building to 7 to 8 ft in the afternoon. Wave detail: NE 7 ft at 7 seconds, becoming NE 8 ft at 7 seconds. Showers likely in the afternoon.

Tue Night

NE winds 25 to 30 kt. Seas 8 to 10 ft, building to 10 to 11 ft after midnight. Wave detail: E 10 ft at 8 seconds, becoming E 11 ft at 8 seconds. A chance of showers in the evening, then showers likely after midnight.

Wed

NE winds around 30 kt with gusts up to 40 kt. Seas 10 to 13 ft. Wave detail: E 13 ft at 9 seconds. Showers likely.

Wed Night

NE winds around 30 kt with gusts up to 40 kt. Seas 12 to 14 ft. Wave detail: E 14 ft at 10 seconds. Showers likely in the evening.

Thu

NE winds around 30 kt with gusts up to 40 kt. Seas 13 to 14 ft. Wave detail: E 13 ft at 11 seconds. A chance of showers.

Thu Night

NE winds 25 to 30 kt. Seas 12 to 14 ft. A chance of showers.

Fri

N winds 25 to 30 kt. Seas 12 to 14 ft. A chance of showers.

Fri Night

N winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 10 to 14 ft. A chance of showers.