Severe Thunderstorms Possible for the Great Lakes into Ohio Valley; Heavy to Excessive Rainfall Over the Southern Plains

Severe thunderstorms will race along a cold front from the Upper Mississippi Valley into the Great Lakes and Ohio Valley with the main threat being damaging winds. The tail end of this front will possibly produce heavy to excessive rainfall across the southern Plains into the Lower Mississippi Valley through Saturday. Finally, Major-to-record river flooding continues across the Carolinas.
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Last Update: 940 PM EDT THU SEP 20 2018

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Detroit/Pontiac, MI Local Forecast Office

6NM SE Mount Clemens MI

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT FRIDAY THROUGH FRIDAY EVENING...
Synopsis: High pressure over northern Ontario will build east today as low pressure organizes over the Midwest. This low will deepen to 29.30 inches as it reaches Lake Superior late tonight, pulling a warm front north across Lower Michigan and Lake Huron during that time. The trailing cold front will then sweep southeast across the central Great Lakes Friday as this low races into Quebec. This front will be followed by a large high pressure system which will build into the area this weekend.

Rest Of Tonight
South winds 10 to 15 knots. Partly cloudy. Waves 2 feet or less.
Friday
Southwest winds 15 to 20 knots. Gusts to 30 knots in the late morning and afternoon. Partly sunny. A chance of light showers in the afternoon. Waves 1 to 3 feet.
Friday Night
Northwest winds 15 to 20 knots. Partly cloudy. A chance of light showers early in the evening. Waves 1 to 3 feet.
Saturday
Northeast winds 10 to 15 knots becoming light and variable. Partly sunny. Waves 2 feet or less.
Saturday Night
Light and variable winds becoming northeast 5 to 10 knots late in the evening...then becoming light and variable after midnight. Mostly clear. Waves 2 feet or less.
Sunday
Northeast winds 5 to 10 knots. Clear. Waves 2 feet or less.
Monday
Southeast winds 10 to 15 knots. Mostly clear. A chance of showers and thunderstorms. Waves 2 feet or less.
Tuesday
Southwest winds 15 to 20 knots. Mostly cloudy with showers likely and a chance of thunderstorms. Waves 1 to 3 feet.
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ABOUT THIS FORECAST

Last Update: 940 PM EDT THU SEP 20 2018
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