Dangerous Heat Building in the West; Severe Storms in the Upper Midwest

A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
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Last Update: 946 PM EDT THU AUG 13 2020

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Detroit/Pontiac, MI Local Forecast Office

6NM SE Mount Clemens MI

Marine Zone Forecast

Synopsis: High pressure, 30.30 inches, will hold over eastern Canada into Saturday. Low pressure, 29.90 inches, will remain nearly stationary across the Ohio Valley into Saturday. Deepening low pressure over Hudson Bay this weekend will drive a cold front across the Great Lakes on Sunday.

Rest Of Tonight
Northeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.
Friday
East winds 5 to 10 knots. Partly sunny. Waves 2 feet or less.
Friday Night
East winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less.
Saturday
Light and variable winds becoming southeast 5 to 10 knots in the late morning and afternoon. Partly sunny with a chance of showers and thunderstorms. Waves 2 feet or less.
Saturday Night
Southeast winds 5 to 10 knots early in the evening becoming light and variable. Partly cloudy with a chance of showers and thunderstorms. Waves 2 feet or less.
Sunday
South winds 5 to 10 knots backing to the northeast in the afternoon...then backing to the north in the evening. Partly sunny in the morning...then partly cloudy with a chance of showers and thunderstorms in the afternoon and evening. Waves 2 feet or less.
Monday
North winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.
Tuesday
Northeast winds 5 to 10 knots. Mostly clear. Waves 2 feet or less.
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ABOUT THIS FORECAST

Last Update: 946 PM EDT THU AUG 13 2020
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