100
FLUS43 KGRR 110819
HWOGRR

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
419 AM EDT Mon Aug 11 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-120830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
419 AM EDT Mon Aug 11 2025

This hazardous weather outlook is for portions of southwest Lower
Michigan.

.DAY ONE...Today and Tonight

There is a chance of thunderstorms this afternoon, mainly east of
South Haven, Ionia, and Alma. Lightning and isolated wind gusts
over 40 mph are possible. Additional thunderstorms are possible
over portions of Southwest Michigan late tonight, with gusty winds
again possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Occasional scattered thunderstorms are expected Tuesday into
Tuesday night. Spotty heavy rainfall totals may lead to water over
roads in low spots within urban or poor drainage areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected.

$$

LMZ844>849-120830-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
419 AM EDT Mon Aug 11 2025

This hazardous weather outlook is for the nearshore waters from
St Joseph to Manistee.

.DAY ONE...Today and Tonight

Thunderstorms over Lake Michigan late tonight could produce wind
gusts greater than 35 knots.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Scattered thunderstorms are possible over Lake Michigan on
Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected.

$$