Severe Thunderstorms With Heavy Rain Possible In The Upper Midwest; Excessive Heat For Central U.S.

Several rounds of strong to severe thunderstorms will be possible from the northern Plains and upper Midwest to the Great Lakes through Friday. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat will grip the central Plains with heat indices approaching 105 to 110 degrees. Very hot and humid conditions are likely to expand into the Mid Atlantic.
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Hazardous Weather Conditions

Last Update: 1039 AM EDT Fri Jul 21 2017

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Grand Rapids, MI Local Forecast Office

10NM SW South Haven MI

Marine Zone Forecast

Rest Of Today
South winds around 5 knots. Mostly sunny. Waves calm.
Tonight
South winds 5 to 15 knots backing southeast 15 to 20 knots toward daybreak. Mostly cloudy with a chance of showers and thunderstorms in the evening, then showers and thunderstorms overnight. Waves calm.
Saturday
Southwest winds 15 to 20 knots veering west 10 to 15 knots late in the day. Showers and thunderstorms likely until midday, then a chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet.
Saturday Night
Northwest winds 10 to 15 knots. Partly cloudy with a chance of showers and thunderstorms. Areas of fog. Waves 1 to 2 feet.
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ABOUT THIS FORECAST

Last Update: 1039 AM EDT Fri Jul 21 2017
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