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FLUS43 KGRR 210740
HWOGRR
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
340 AM EDT TUE APR 21 2026
MIZ037>040-043>046-050>052-056>059-064>067-071>074-220745-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
340 AM EDT TUE APR 21 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.
DAY ONE
TODAY AND TONIGHT
SHOWERS WITH AN ISOLATED THUNDERSTORM COULD DEVELOP THIS
AFTERNOON INTO EVENING. IF A THUNDERSTORM OCCURS THIS EVENING IN
SOUTHWEST MICHIGAN, WIND GUSTS OVER 40 MPH ARE POSSIBLE, WHICH
WOULD BE MOST FAVORED IN AREAS NEAR I-94 AND SOUTH.
DAYS TWO THROUGH SEVEN
WEDNESDAY THROUGH MONDAY
THERE IS A CHANCE OF THUNDERSTORMS ON FRIDAY. THE POTENTIAL FOR
SEVERE WEATHER IS LOW.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED.
LMZ844>849-220745-
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-
340 AM EDT TUE APR 21 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS FROM
ST JOSEPH TO MANISTEE.
DAY ONE
TODAY AND TONIGHT
WINDS AND WAVES ON LAKE MICHIGAN WILL BE HAZARDOUS TO SMALL CRAFT
TODAY. THERE IS A SLIGHT CHANCE OF AN ISOLATED THUNDERSTORM OVER
LAKE MICHIGAN THIS AFTERNOON TO EARLY EVENING.
DAYS TWO THROUGH SEVEN
WEDNESDAY THROUGH MONDAY
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE POSSIBLE THURSDAY
AFTERNOON INTO FRIDAY.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED.
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