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: 309 PM AKST Sun Dec 17 2017

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Anchorage, AK Local Forecast Office

21NM SSE Chiswell Islands AK

Marine Zone Forecast

...SMALL CRAFT ADVISORY TONIGHT...

Synopsis: A 998 mb low 120 nm South of Middleton Island exits the Gulf 210 nm Southwest of Klawock at 1012 mb for Mon afternoon. High pressure slides across the Gulf through Tue afternoon. A front crosses the Western Gulf by Tue afternoon.

Tonight
N wind 20 kt. Seas 9 ft.
Mon
N wind 20 kt. Gusts to 30 kts out of bays and passes. Seas 7 ft.
Mon Night
S wind 20 kt. Seas 5 ft.
Tue
S wind 30 kt. Seas 10 ft.
Tue Night
W wind 30 kt. Seas 10 ft.
Wed
SW wind 25 kt. Seas 8 ft.
Thu
E wind 25 kt. Seas 18 ft.
Fri
SE wind 20 kt. Seas 18 ft.
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ABOUT THIS FORECAST

Last Update: 309 PM AKST Sun Dec 17 2017
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