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: 500 AM ChST Mon Dec 18 2017

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Tiyan, GU Local Forecast Office

Marine Zone Forecast


Today
West to northwest wind 5 to 15 kt. Combined seas 5 to 7 ft. Mostly cloudy with isolated showers.
Tonight Through Tuesday Night
North to northeast wind 10 to 15 kt. Combined seas 6 to 9 ft. Mostly cloudy with scattered showers and isolated thunderstorms.
Wednesday Through Friday
East wind 15 to 25 kt turning southeast thursday. Combined seas 7 to 10 ft. Cloudy with scattered showers and isolated thunderstorms.
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ABOUT THIS FORECAST

Last Update: 500 AM ChST Mon Dec 18 2017
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