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 Northern Inland Waters Including The San Juan Islands (PZZ133) (Text-Only)
NWS Forecast for: Northern Inland Waters Including The San Juan Islands (PZZ133)
Issued by: National Weather Service Seattle, WA
Last Update: 852 PM PST Sun Dec 17 2017




Tonight: SW wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain.

Mon: W wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft. A chance of rain in the morning then a slight chance of rain in the afternoon.

Mon Night: SE wind to 10 kt becoming E 5 to 15 kt after midnight. Wind waves 2 ft or less. Rain.

Tue: E wind 5 to 15 kt becoming SE 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft.

Tue Night: W wind 5 to 15 kt becoming NE after midnight. Wind waves 2 ft or less.

Wed: N wind to 10 kt. Wind waves 1 ft or less.

Wed Night: N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.

Thu: Light wind. Wind waves less than 1 ft.

Fri: N wind 5 to 15 kt. Wind waves 2 ft or less.



Zone Forecast: Northern Inland Waters Including The San Juan Islands (PZZ133)

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