


Hazardous Weather Outlook
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
857 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. $$ LMZ844>849-180845- St Joseph to South Haven MI-South Haven to Holland MI- Holland to Grand Haven MI-Grand Haven to Whitehall MI- Whitehall to Pentwater MI-Pentwater to Manistee MI- 438 AM EDT Thu Apr 17 2025 This hazardous weather outlook is for the nearshore waters from St Joseph to Manistee. .DAY ONE...Today and Tonight Winds and waves will increase this afternoon, and will continue tonight. These conditions will create hazardous conditions for Small Craft. Thunderstorms will become possible late tonight. Severe weather is not expected. Some small hail and cloud to water lightning will be the main threats. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Thunderstorms will be possible first thing in the morning, and then again late in the afternoon and evening on Friday. Severe weather is possible, with damaging winds the main threat. Some large hail will be possible, and an isolated waterspout is also possible. Winds and waves will continue to create hazardous conditions for Small Craft into Saturday morning. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed late Friday. $$