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: 831 PM PST Sun Dec 17 2017

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Medford, OR Local Forecast Office

19NM NW Brookings OR

Marine Zone Forecast

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY

Synopsis: Offshore high pressure and a trough near the coast will both weaken tonight into Monday. A strong cold front will move through the area Tuesday afternoon and evening. Winds will become southerly Monday evening ahead of it, and will increase to advisory and gale force as the front moves through. High and steep swell will follow Tuesday night into Wednesday night. Winds will turn north Wednesday and persist into the weekend...but will likely remain below advisory levels until the weekend.

Tonight
N wind 15 to 20 kt except N 5 to 15 kt within 5 nm of brookings southward. Wind waves 3 ft. NW swell 6 to 7 ft at 12 seconds.
Mon
NW wind 5 to 15 kt. Within 5 nm of brookings southward, N wind 10 kt...backing to NW in the afternoon. Wind waves 2 ft or less. Swell NW 6 to 7 ft at 11 seconds.
Mon Night
Northern portion, S wind 10 kt...rising to 10 to 15 kt after midnight. Brookings southward, W wind 5 kt...backing to SE in the late evening and overnight. Wind waves 2 ft or less. Swell W 6 to 7 ft at 14 seconds.
Tue
S wind 20 to 25 kt northern portion and S 10 to 20 kt brookings southward. Wind waves 3 to 4 ft... Building to 5 to 8 ft in the afternoon. Swell NW 7 to 9 ft. Rain.
Tue Night
Northern portion, SW wind 15 kt... Veering to W after midnight. Brookings southward, S wind 20 to 25 kt... Becoming W 10 kt after midnight. Wind waves 3 to 4 ft. Mixed swell NW 7 to 8 ft and W 10 ft...building to W 11 ft after midnight. Showers through the night. Slight chance of tstms after midnight.
Wed
NW wind 5 to 15 kt. Wind waves 3 ft. Swell NW 11 ft. Chance of showers.
Wed Night
NW wind 10 kt...veering to NE after midnight. Wind waves 3 ft in the evening...becoming 2 ft or less. NW swell 11 to 12 ft.
Thu
NE wind 10 kt...backing to N. Wind waves 2 ft or less... Becoming 3 ft in the evening, then... Becoming 2 ft or less after midnight. Swell NW 10 ft... Subsiding to NW 7 ft.
Fri
N wind 10 kt. Wind waves 2 ft or less. Swell NW 6 ft.
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ABOUT THIS FORECAST

Last Update: 831 PM PST Sun Dec 17 2017
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