FLUS43 KGRR 191439

HWOGRR



Hazardous Weather Outlook

National Weather Service Grand Rapids MI

1039 AM EDT Tue Aug 19 2025



MIZ037>040-043>046-050>052-056>059-064>067-071>074-200830-

Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-

Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-

Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-

1039 AM EDT Tue Aug 19 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 southeast 

of a South Haven to Alma line. Severe weather is not expected.



.DAYS TWO THROUGH SEVEN...Wednesday through Monday



No hazardous weather is expected at this time.



.SPOTTER INFORMATION STATEMENT...



Spotter activation will not be needed.



$$



LMZ844>849-200830-

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-

1039 AM EDT Tue Aug 19 2025



This hazardous weather outlook is for the nearshore waters from

St Joseph to Manistee.



.DAY ONE...Today and Tonight



A moderate swim risk exists this morning for most locations along 

the shoreline. A period of higher winds and waves is possible from 

late this afternoon into early tonight as winds become from the 

north and increase. This will make conditions moderately hazardous 

for boaters and swimmers, especially south of Muskegon.



.DAYS TWO THROUGH SEVEN...Wednesday through Monday



Elevated winds and waves are possible again Wednesday...again

making conditions moderately hazardous for boaters and swimmers.



.SPOTTER INFORMATION STATEMENT...



Spotter activation will not be needed.



$$