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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Coastal Waters Forecast for Coastal waters from Cape Shoalwater WA to Cascade Head OR out 10 nm (PZZ250) (Text-Only)
NWS Forecast for: Coastal waters from Cape Shoalwater WA to Cascade Head OR out 10 nm (PZZ250)
Issued by: National Weather Service Portland, OR
Last Update: 911 PM PST Sun Dec 17 2017




Tonight: SW wind 15 to 20 kt with gusts to 25 kt, becoming W 10 to 15 kt after midnight. Wind waves SW 3 ft at 5 seconds. W swell 8 ft at 11 seconds. Rain likely.

Mon: NW wind 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Wind waves W 2 ft at 4 seconds, shifting to the SE 4 ft at 4 seconds in the afternoon. W swell 7 ft at 11 seconds. Rain likely.

Mon Night: S wind 20 to 25 kt. Wind waves S 7 ft at 6 seconds. W swell 9 ft at 15 seconds. Rain.

Tue: S wind 30 to 35 kt with gusts 40 to 45 kt. Combined seas 15 ft with a dominant period of 15 seconds. Rain.

Tue Night: W wind 20 to 25 kt. Wind waves W 7 ft at 8 seconds. W swell 14 ft at 14 seconds, subsiding to 11 ft at 14 seconds after midnight. Showers likely.

Wed: NW wind 20 to 25 kt with gusts 30 to 35 kt. Combined seas 15 ft. Chance of showers.

Wed Night: N wind 5 to 10 kt. Wind waves 2 ft. NW swell 13 ft.

Thu: NW wind 5 to 10 kt. Wind waves 2 ft. NW swell 9 ft.

Fri: N wind 10 to 15 kt. Wind waves 3 ft. NW swell 8 ft.



Zone Forecast: Coastal waters from Cape Shoalwater WA to Cascade Head OR out 10 nm (PZZ250)

Visit your local NWS office at: http://www.wrh.noaa.gov/pqr