Fire Weather Threats Continue in the West; Wintry Weather from Upper Midwest to New England

High pressure in the west continues to send weather systems into the Great Basin, and this is keeping fire weather threats elevated to critical across southern California. A series of weather systems will bring widespread snow from the Upper Midwest to the Northeast U.S., with locally heavier snow amounts on the lee side of the Great Lakes.
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Last Update: 328 PM EST Thu Dec 14 2017

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...
Synopsis: High pressure will build in across the area tonight and then weaken by Friday afternoon. A low pressure system will move up the Mid-Atlantic coast Friday afternoon and evening. High pressure will return for most of the weekend. A weak low pressure system will move through Sunday night into Monday with another low expected for Tuesday. High pressure will build in for the middle part of next week.

Tonight
NW winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt late this evening and overnight. Seas 4 to 5 ft, diminishing to 2 to 4 ft overnight. Mainly in S swell with a dominant period of 7 seconds.
Fri
NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 ft or less. Mainly in SE swell with a dominant period of 10 seconds. A chance of snow late with vsby 1 to 3 nm.
Fri Night
W winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 30 kt. Seas 2 ft or less, then 3 to 4 ft in the late evening and overnight. Mainly in S swell with a dominant period of 8 seconds. A chance of snow and showers early in the evening, then a chance of snow showers late in the evening. Vsby 1 to 3 nm early in the evening.
Sat
W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Mainly in S swell with a dominant period of 8 seconds.
Sat Night
NW winds 15 to 20 kt, diminishing to 5 to 10 kt after midnight. Gusts up to 25 kt. Seas 3 to 4 ft.
Sun
NW winds 5 to 10 kt, becoming SW in the afternoon. Seas around 3 ft in the morning, then 2 ft or less.
Sun Night
SW winds 5 to 10 kt. Seas 2 ft or less. A chance of showers.
Mon
W winds 5 to 10 kt. Seas 2 ft or less, then around 3 ft in the afternoon. A chance of showers in the morning.
Mon Night
W winds 10 to 15 kt. Seas around 3 ft.
Tue
W winds 10 to 15 kt. Seas 3 to 4 ft.
Tue Night
W winds 15 to 20 kt. Seas 3 to 5 ft.
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ABOUT THIS FORECAST

Last Update: 328 PM EST Thu Dec 14 2017
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