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: 941 PM EDT Thu Sep 20 2018

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Detroit/Pontiac, MI Local Forecast Office

4NM NNE Port Hope MI

Marine Zone Forecast

...GALE WARNING IN EFFECT FROM 8 AM EDT FRIDAY THROUGH FRIDAY EVENING...
Rest Of Tonight
South winds 15 to 20 knots. Gusts to 30 knots early in the morning. Partly cloudy with a slight chance of showers and thunderstorms. Waves 3 to 5 feet. Waves occasionally around 7 feet.
Friday
Southwest winds 20 to 25 knots with gusts to 35 knot gales becoming west to 30 knots with gusts to 40 knot gales late in the afternoon. Partly cloudy with a slight chance of showers and thunderstorms. Waves 3 to 5 feet building to 5 to 7 feet late in the afternoon. Waves occasionally around 10 feet.
Friday Night
Northwest winds to 30 knots with gusts to 35 knot gales becoming north 20 to 25 knots with gusts to 30 knots after midnight. Partly cloudy. A slight chance of showers and thunderstorms early in the evening. Waves 6 to 9 feet. Waves occasionally around 12 feet.
Saturday
North winds 15 to 20 knots becoming light and variable. Partly cloudy until late afternoon then clearing. Waves 5 to 7 feet subsiding to 2 to 4 feet. Waves occasionally around 10 feet. see lake huron open lake forecast for days 3 through 5.
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ABOUT THIS FORECAST

Last Update: 941 PM EDT Thu Sep 20 2018
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