2 hail, 1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Rapids, MI wrote its last area forecast discussion before the first event at May 12, 2:00 PM EST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 300 PM EDT WED MAY 12 2004 .SHORT TERM... UPPER RIDGE OVERHEAD AT THIS TIME WILL GRADUALLY GIVE WAY TO AN UPPER TROUGH MOVING EASTWARD FROM THE NORTHERN ROCKIES THROUGH SATURDAY. AT THE SURFACE MAIN COLD FRONT EXTENDS FROM MINNESOTA SOUTHWEST INTO KANSAS ON THE EASTERN EDGE OF THE UPPER TROUGH. THIS FRONT WILL GRADUALLY MAKE ITS WAY INTO AND THROUGH THE FORECAST AREA FRIDAY EVENING AND NIGHT. HIGH PRESSURE AND COOLER AIR BUILDS IN FOR SATURDAY. FORECAST CHALLENGES WILL BE RELATED TO THUNDERSTORM CHANCES THROUGH FRIDAY NIGHT. TONIGHT...SHOWERS AND THUNDERSTORMS OF THE AFTERNOON WILL LIKELY FADE INTO THE EVENING HOURS...BEFORE REDEVELOPING OVERNIGHT AS THE FRONTAL BOUNDARY OUT TO THE WEST MOVES INTO WISCONSIN. WILL CARRY SCATTERED POPS THIS EVENING AND GO LIKELY OVERNIGHT AS STORMS ADVECT INTO THE AREA FROM THE WEST AND SOUTH. THURSDAY...WITH THE FRONTAL BOUNDARY MOVING INTO THE AREA...FEEL THAT LIKELY POPS IS THE WAY TO GO AND WILL CARRY 60 POPS AREA WIDE. THERE MAY BE A LULL IN THE ACTIVITY...BUT SHOULD BE QUITE A BIT OF ACTIVITY AROUND THROUGH THE COURSE OF THE DAY. THURSDAY NIGHT...ANOTHER WAVE IS FORECAST TO MOVE UP THE FRONTAL BOUNDARY WITH DECENT CHANCES ONCE AGAIN FOR SHOWERS AND THUNDERSTORMS. GIVEN THE AMOUNT OF RAIN THAT HAS FALLEN IN THE LAST 5 DAYS...FLOODING WILL REMAIN A THREAT. FRIDAY THE FRONT IS FORECAST TO MOVE THROUGH THE AREA WITH GOOD CHANCES ONCE AGAIN FOR SHOWERS AND STORMS. FRIDAY EVENING THE BOUNDARY SAGS OFF TO THE SOUTH AND EAST AND THIS SHOULD TAKE THE PRECIPITATION WITH IT. ON SATURDAY...HIGH PRESSURE BUILDS INTO THE AREA WHICH SHOULD RESULT IN DRY CONDITIONS. THERE WILL LIKELY BE A GOOD DEAL OF CU ON SATURDAY WITH THE THERMAL TROUGH DIGGING IN. DO NOT FEEL THE THREATS FOR SEVERE ARE ALL THAT GREAT IN THE NEXT FEW DAYS...BUT CANNOT BE RULED OUT IF ENOUGH CLEARING CAN OCCUR FOR DESTABILIZATION THURSDAY AFTERNOON/EVENING AS WELL AS FRIDAY AFTERNOON/EVENING. .LONG TERM... LONG WAVE PATTERN DURING THE EXTENDED PERIOD WILL FEATURE A QUASI ZONAL FLOW WITH EMBEDDED SHORT WAVES MOVING THROUGH THE NRN PORTION OF THE CWA. SFC HIGH PRESSURE SATURDAY NIGHT WILL DRIFT EAST AND A WARM FRONT WILL LIFT NORTH SUNDAY NIGHT. WELL BE IN THE WARM SECTOR MONDAY THROUGH TUESDAY WHEN THE COLD FRONT PUSHES THROUGH. WILL ADD TSRA TO FORECAST MONDAY AFTERNOON AND CONTINUE THROUGH TUESDAY. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT TUESDAY NIGHT AND WELL SEE DRY WX TUESDAY NIGHT THROUGH WEDNESDAY. && .GRR...WATCHES/WARNINGS/ADVISORIES...NONE. && DUKE 93
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 109 PM EDT WED MAY 12 2004 MIZ037>040-043>046-050>052-056>059-064>067-071>074-131010- ALLEGAN-BARRY-CALHOUN-CLARE-CLINTON-EATON-GRATIOT-INGHAM-IONIA- ISABELLA-JACKSON-KALAMAZOO-KENT-LAKE-MASON-MECOSTA-MONTCALM-MUSKEGON- NEWAYGO-OCEANA-OSCEOLA-OTTAWA-VAN BUREN- 109 PM EDT WED MAY 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. STORMS WILL BE POSSIBLE BETWEEN 100 PM AND MIDNIGHT. SOME OF THESE STORMS MAY REACH SEVERE LEVELS. THE STRONGEST STORMS MAY BE CAPABLE OF PRODUCING HAIL TO AROUND AN INCH IN DIAMETER AND WIND GUSTS TO 65 MPH. STORM MOVEMENT WILL BE TO THE NORTHEAST AT 35 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE AGAIN ON THURSDAY AND FRIDAY AS A COLD FRONT APPROACHES. FLOODING WILL CONTINUE TO BE A CONCERN GIVEN THE RAINFALL OVER THE COURSE OF THE LAST FEW DAYS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE POSSIBLE THIS AFTERNOON AND EVENING. OSTUNO DUKE
The national radar mosaic for the moment the first event began.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
A trained spotter reported three quarters inch diameter hail in Sand Lake.
The general public reported a 60 m.p.h. wind gust one mile west of Weidman.
Three quarters inch hail was reported by the public in Lake George.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2004Every state in 2004This day in weather historyWarnings in Michigan, May 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5402028, 5402029, 5402102.