Hazardous Weather Outlook
Issued by NWS Grand Rapids, MI

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733
FLUS43 KGRR 170837
HWOGRR

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
437 AM EDT Tue Jun 17 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-180845-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
437 AM EDT Tue Jun 17 2025

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

.DAY ONE...Today and Tonight

There is a small chance of a thunderstorm this afternoon and
tonight. Severe weather is not expected. The main threat will be
cloud to ground lightning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms will be possible Wednesday through Wednesday
evening. Storms early in the day are not expected to be severe.
More widespread storms will develop late Wednesday afternoon and
move through Wednesday evening. These storms are likely to become
severe, especially along and south of Interstate 96. The most
likely threat will be strong damaging winds. Large hail will be
possible, and an isolated tornado or two will also be possible.

Additional storms will be possible Friday through Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely Wednesday afternoon and evening.

$$

LMZ844>849-180845-
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-
437 AM EDT Tue Jun 17 2025

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

.DAY ONE...Today and Tonight

There is a small chance of a thunderstorm this afternoon and
tonight. Severe weather is not expected. The main threat will be
cloud to ground lightning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms will be possible Wednesday through Wednesday
evening. Storms early in the day are not expected to be severe.
More widespread storms will develop late Wednesday afternoon and
move through Wednesday evening. These storms are likely to become
severe, especially near Muskegon and areas south. The most likely
threat will be strong damaging winds. Large hail will be
possible, and an isolated waterspout or two will also be
possible.

Winds and waves will become hazardous to Small Craft and
swimmers on Wednesday and Wednesday night.

Additional storms will be possible Friday through Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely Wednesday afternoon and evening.

$$