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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Hazardous Weather Conditions

Last Update: 253 PM AKST Sun Dec 17 2017

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Anchorage, AK Local Forecast Office

55NM N Cold Bay AK

Marine Zone Forecast

...GALE WARNING THROUGH MONDAY NIGHT...

Synopsis: A 961 mb low 250 nm north of Attu deepens to 945 mb 415 nm north of Attu Mon morning then shifts to 50 nm west of Gambell at 969 mb for Tue afternoon. The associated fronts sweep the Bering and Aleutians through Tue afternoon. A 983 mb low moves to 415 nm southwest of Attu by Tue afternoon.

Tonight
W wind 20 kt becoming S 35 kt after midnight. From port moller E, NW wind 25 kt. Seas 12 ft.
Mon
S wind 45 kt, seas 15 ft building to 21 ft in the afternoon. From port moller E, S wind 30 kt increasing to 40 kt in the afternoon, seas 8 ft building to 14 ft in the afternoon.
Mon Night
S wind 40 kt diminishing to 30 kt after midnight. seas 20 ft. Rain.
Tue
SW wind 35 kt. Seas 19 ft.
Tue Night
SW wind 30 kt. Seas 19 ft.
Wed Through Thu
SE wind 25 kt. Seas 14 ft.
Fri
SE wind 15 kt. Seas 11 ft.
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ABOUT THIS FORECAST

Last Update: 253 PM AKST Sun Dec 17 2017
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