Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Last Update: 542 AM EST Tue Dec 9 2025

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT......GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING...

Today
NE winds 5 to 10 kt, becoming S early this afternoon, then increasing to around 10 kt late. Seas 2 to 3 ft. Wave detail: NE 3 ft at 8 seconds.
Tonight
SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: S 4 ft at 5 seconds and SE 4 ft at 9 seconds.
Wed
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave detail: S 7 ft at 8 seconds. Rain likely in the afternoon.
Wed Night
W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave detail: S 8 ft at 9 seconds. A chance of rain in the evening.
Thu
W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave detail: S 5 ft at 9 seconds and W 4 ft at 4 seconds.
Thu Night
W winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave detail: W 4 ft at 4 seconds and S 2 ft at 8 seconds.
Fri
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri Night
W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of snow and rain. Vsby 1 to 3 nm.
Sat
W winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 3 to 5 ft.
Sat Night
W winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow after midnight.



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542 AM EST Tue Dec 9 2025
 
 

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