Significant Snowfall for Washington Cascades and Northern Rocky Mountains

A cold front will linger for several days from the Pacific Northwest to portions of the northern Plains early this week. Cold temperatures and copious moisture will combine to produce several feet of snow into the mountain passes, with up to 4 feet of snow down to 4000 feet in the northern Rockies. Travel through mountain passes will be very difficult.
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Last Update: 1029 PM EST Sun Dec 17 2017

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27NM S Annapolis MD

Marine Zone Forecast


Synopsis: A warm front will pull north of the waters tonight. High pressure will control the weather pattern through Tuesday before a cold front crosses the area Tuesday night. High pressure will build to the north Wednesday into Thursday as a front stalls to the south. A Small Craft Advisory may be needed late Tuesday into Wednesday for portions of the waters.

Rest Of Tonight
SW winds 5 kt. Waves flat. Scattered sprinkles late this evening.
Mon
SW winds 5 kt. Waves flat.
Mon Night
SW winds 5 kt. Waves flat. Patchy fog. Vsby 1 to 3 nm.
Tue
SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Waves 1 to 2 ft.
Tue Night
W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Wed
NW winds 5 to 10 kt. Waves 1 ft.
Wed Night
N winds 5 to 10 kt. Waves 1 ft.
Thu
E winds 5 to 10 kt. Waves 1 ft.
Fri
S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night.
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ABOUT THIS FORECAST

Last Update: 1029 PM EST Sun Dec 17 2017
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