Wintery Weather Stretching from the West Coast to the Great Lakes

Lake Effect Snow Warnings are in effect for the Great Lakes with 2 to 3 feet storm total snow possible. Arctic Air extends across much of the U.S. with breezy winds and temperatures 15-35 degrees below normal in the Northern Plains. Out west, heavy mountain snow and some low elevation snow and freezing rain forecast as a warmer weather system interacts with the Arctic airmass.
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Hazardous Weather Conditions

Last Update: 259 AM CST THU DEC 8 2016

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Northern Indiana Local Forecast Office

10NM WSW Saint Joseph MI

Marine Zone Forecast

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED.

Synopsis: LOW PRESSURE OF 29.4 INCHES NEAR JAMES BAY WILL CONTINUE TO MOVE EAST THROUGH QUEBEC TODAY... WHILE A SECONDARY TRAILING COLD FRONT MOVES SOUTHEAST ACROSS THE WESTERN LAKES. HIGH PRESSURE RIDGING AVERAGING 30.7 INCHES DEVELOPING ACROSS THE NORTHERN AND CENTRAL PLAINS WILL MOVE SLOWLY EAST TO THE MISSISSIPPI VALLEY AND OHIO RIVER VALLEYS THROUGH THE END OF THE WEEK...WITH A CENTER WEAKENING TO 30.6 INCHES ACROSS THE TENNESSEE VALLEY BY EARLY SATURDAY. THE RIDGE WILL DRIFT EAST ACROSS THE GREAT LAKES SATURDAY...BEFORE LOW PRESSURE NEAR 29.9 INCHES DEVELOPS ACROSS THE PLAINS AND LIFTS NORTHEAST TO THE WESTERN LAKES SUNDAY.

Today
West winds to 30 kt becoming northwest. Occasional gales to 35 kt. Chance of snow showers. Waves 7 to 10 ft occasionally to 13 ft.
Tonight
Northwest winds to 30 kt. Snow showers likely. Waves 7 to 10 ft occasionally to 13 ft.
Friday
Northwest winds 15 to 25 kt becoming west 10 to 20 kt. Snow showers likely in the morning...then chance of snow showers in the afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.
Friday Night
West winds 10 to 20 kt. Chance of snow showers. Waves 3 to 5 ft occasionally to 7 ft.
Saturday
West winds 10 to 20 kt becoming southwest 10 to 15 kt. Chance of snow showers in the morning...then chance of snow in the afternoon. Waves 2 to 4 ft.
Saturday Night
South winds 15 to 25 kt increasing to 30 kt. Snow likely. Waves 3 to 5 ft occasionally to 7 ft.
Sunday
South winds 15 to 25 kt diminishing to 10 to 20 kt. Chance of snow. Waves 3 to 5 ft occasionally to 7 ft subsiding to 2 to 4 ft.
Monday
North winds 15 to 25 kt becoming northwest to 30 kt. Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.
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ABOUT THIS FORECAST

Last Update: 259 AM CST THU DEC 8 2016
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