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: 357 AM EST Mon Dec 18 2017

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Detroit/Pontiac, MI Local Forecast Office

6NM SE Lexington MI

Marine Zone Forecast

Today
Southwest winds 5 to 10 knots increasing to 10 to 15 knots late in the morning...then diminishing to 5 to 10 knots early in the afternoon increasing to 10 to 15 knots late in the afternoon. Cloudy. A chance of light showers until late afternoon...then a slight chance of light showers late in the afternoon. Patchy fog in the morning. Areas of drizzle until late afternoon...then patchy drizzle late in the afternoon. Waves around 2 feet or less.
Tonight
Southwest winds 10 to 15 knots increasing to 15 to 20 knots with gusts to 30 knots in the late evening and overnight. Mostly cloudy. A slight chance of light showers early in the evening. Patchy drizzle early in the evening. Waves 1 to 3 feet.
Tuesday
Southwest winds 15 to 20 knots becoming west 20 to 25 knots in the late morning and early afternoon...then diminishing to 15 to 20 knots late in the afternoon. Gusts to 30 knots. Mostly cloudy early in the morning becoming partly cloudy. Waves 1 to 3 feet.
Tuesday Night
West winds 15 to 20 knots with gusts to 30 knots increasing to 20 to 25 knots with gusts to 30 knots late in the evening...then diminishing to 15 to 20 knots after midnight. Mostly clear. Waves 1 to 3 feet. see lake huron open lake forecast for days 3 through 5.
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ABOUT THIS FORECAST

Last Update: 357 AM EST Mon Dec 18 2017
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