Hazardous Weather Outlook
Issued by NWS Grand Rapids, MI

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FLUS43 KGRR 170838
HWOGRR

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
438 AM EDT Thu Apr 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-
438 AM EDT Thu Apr 17 2025

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

.DAY ONE...Today and Tonight

Thunderstorms will become possible late tonight. Severe weather is
not expected. Some small hail and cloud to ground lightning will
be the main threats.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms will be possible first thing in the morning, and
then again late in the afternoon and evening on Friday. Severe
weather is possible, with damaging winds the main threat. Some
large hail will be possible, and an isolated tornado is also
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late Friday.

$$

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-
438 AM EDT Thu Apr 17 2025

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

.DAY ONE...Today and Tonight

Winds and waves will increase this afternoon, and will continue
tonight. These conditions will create hazardous conditions for
Small Craft.

Thunderstorms will become possible late tonight. Severe weather is
not expected. Some small hail and cloud to water lightning will
be the main threats.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms will be possible first thing in the morning, and
then again late in the afternoon and evening on Friday. Severe
weather is possible, with damaging winds the main threat. Some
large hail will be possible, and an isolated waterspout is also
possible.

Winds and waves will continue to create hazardous conditions for
Small Craft into Saturday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late Friday.

$$