Arctic Air Plunges into the Great Lakes, Northeast and Mid-Atlantic

Arctic air dropping through the northern and eastern U.S. and a storm off the east coast will bring periods of snow, very cold wind chills and hazardous traveling conditions from the Upper Great Lakes to the Northeast. Meanwhile in southern California, Santa Ana winds will decrease but hot, dry air will remain over the area with elevated fire weather conditions.
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Last Update: 1003 PM EST Tue Dec 12 2017

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Detroit/Pontiac, MI Local Forecast Office

6NM NW Caseville MI

Marine Zone Forecast

...GALE WARNING IN EFFECT UNTIL 4 AM EST WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 4 AM EST WEDNESDAY...
Rest Of Tonight
Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots early in the morning. Partly cloudy. Freezing spray this evening. A chance of flurries. Waves 6 to 9 feet. Waves occasionally around 12 feet.
Wednesday
Northwest winds 10 to 15 knots diminishing to 5 to 10 knots late in the morning...then backing to the south early in the afternoon backing to the east late in the afternoon. Partly cloudy early in the morning. A chance of flurries early in the morning. A chance of light snow late in the morning...then light snow in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon. Waves occasionally around 7 feet.
Wednesday Night
Northeast winds 10 to 15 knots becoming north 15 to 20 knots in the late evening and overnight. Light snow early in the evening...then light snow showers in the late evening and early morning. A chance of light snow showers early in the morning. Waves 1 to 3 feet building to 4 to 6 feet in the late evening and overnight. Waves occasionally around 8 feet.
Thursday
Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the afternoon. Mostly sunny with a chance of light snow showers early in the morning...then partly cloudy in the late morning and afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet late in the afternoon. Waves occasionally around 7 feet. see lake huron open lake forecast for days 3 through 5.
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Last Update: 1003 PM EST Tue Dec 12 2017
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