Areas Of Locally Heavy Snow And Rain Today

A strong low pressure system over the Great Lakes will produce locally heavy snow and rain, before reaching eastern Canada by tomorrow morning. Heavy snow is expected across the Upper Mississippi Valley and Great Lakes with the arrival of an Arctic air mass, while locally heavy rain is possible along and ahead of the associated cold front over the eastern Ohio Valley and southeastern New England.
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Last Update: 631 PM EST Mon Dec 9 2019

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
Synopsis: Low pressure passes north of the area tonight into Tuesday, and a cold front will then pass through the region Tuesday evening. Strong high pressure builds in from the west late Wednesday into Thursday and moves offshore on Friday. Low pressure affects the Northeast Friday night into Saturday, followed by high pressure for the start of the following week.

Tonight
S winds 15 to 20 kt, becoming SW 20 to 25 kt late this evening and overnight. Gusts up to 30 kt. Seas 6 to 8 ft. Swell mainly from the SE with a dominant period of 9 seconds. rain this evening, then a chance of rain after midnight. A chance of showers late.
Tue
SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 8 ft. Swell mainly from the S with a dominant period of 9 seconds. a chance of rain late in the morning. Rain likely early in the afternoon, then a chance of rain late.
Tue Night
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Swell mainly from the SE with a dominant period of 8 seconds. a chance of rain early in the evening, then rain in the late evening and overnight.
Wed
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Swell mainly from the SE with a dominant period of 8 seconds. rain until late afternoon, then a chance of rain late.
Wed Night
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Thu
N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
Thu Night
NE winds around 10 kt, becoming E after midnight. Seas 3 to 4 ft.
Fri
SE winds 10 to 15 kt, becoming E 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft.
Fri Night
SE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 7 ft, building to 6 to 9 ft after midnight. A chance of rain in the evening, then rain likely after midnight.
Sat
SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 6 to 9 ft. Rain likely, mainly in the morning.
Sat Night
W winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 5 to 8 ft. A chance of showers.
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Last Update: 631 PM EST Mon Dec 9 2019
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