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.

Coastal Waters Forecast for Grand Portage to Grand Marais MN (LSZ140) (Text-Only)
NWS Forecast for: Grand Portage to Grand Marais MN (LSZ140)
Issued by: National Weather Service Duluth, MN
Last Update: 347 AM CST Mon Dec 18 2017

Today: Southwest wind 20 to 25 knots. Gusts up to 30 knots in the late morning and early afternoon. Slight chance of snow early in the afternoon. Rain and snow likely late in the afternoon. Waves building to 7 to 9 feet.

Tonight: Southwest wind 20 to 25 knots with gusts around 30 knots becoming west during the evening around 20 knots. Rain and snow in the evening, then slight chance of rain and snow after midnight. Waves 7 to 9 feet subsiding to 5 to 7 feet after midnight.

Tuesday: West wind 20 to 25 knots. Gusts up to 35 knots late in the afternoon. Mostly sunny. Waves 3 to 5 feet. A gale warning may be needed.

Tuesday Night: Northwest wind 15 to 20 knots. Gusts up to 30 knots. Partly cloudy. Waves 2 to 4 feet. note...wave height forecasts are for ice free areas.

Zone Forecast: Grand Portage to Grand Marais MN (LSZ140)

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