550
FLUS43 KGRR 220900
HWOGRR

Hazardous Weather Outlook
National Weather Service Grand Rapids MI
500 AM EDT Tue Jul 22 2025

MIZ037>040-043>046-050>052-056>059-064>067-071>074-230900-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
500 AM EDT Tue Jul 22 2025

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Heat builds on Wednesday when heat index values may push to around
100 degrees in spots. The potential is there for even warmer heat
index values on Thursday but there are some questions about clouds
and precipitation trying to spread in during the afternoon.

Thunderstorms are possible from Thursday afternoon through
Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

LMZ844>849-230900-
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-
500 AM EDT Tue Jul 22 2025

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

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Winds and waves may pose a hazard to small craft boaters and
swimmers north of Grand Haven on Wednesday and Wednesday night.

Thunderstorms are possible from Thursday afternoon through
Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$