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FLUS43 KGRR 211947
HWOGRR

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
346 PM EDT Thu Aug 21 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-220830-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
346 PM EDT Thu Aug 21 2025

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

.DAY ONE...Tonight

Areas of fog will be possible tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms will be possible Friday night into Saturday and
again Sunday night into Monday. Thunderstorms are not expected to
be severe but will be capable of lightning and on Monday could
also include small hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

LMZ844>849-220830-
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-
346 PM EDT Thu Aug 21 2025

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

.DAY ONE...Tonight

Areas of fog will be possible tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms will be possible Friday night and Saturday. Winds
and waves are also expected to increase over the weekend with a
chance for hazards to swimmers and small craft. There is another
chance for thunderstorms and even waterspouts Sunday night into
Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

TJT