2 hail, 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 9, 7:53 PM EST, 3 hours 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 853 PM EDT FRI MAY 9 2003 ...LOOKS LIKE LITTLE REAL THREAT FOR CONVECTION TONIGHT... THE REAL QUESTION FOR TONIGHT IS WHAT TO DO WITH THE CONVECTION WE HAVE IN OUR CURRENT FORECAST? SINCE THE SOUNDING AROUND THE LOWER GREAT LAKES...SFC OBS...SATELLITE IMAGES AND MODEL FORECAST ALL AGREE THAT VERY DRY AIR WILL RULE THE NIGHT OVER SOUTHERN 1/2 OF LOWER MICHIGAN (850 MB TO ABOVE 300 MB)...SEEMS THE RISK OF ANY THUNDERSTORMS IS MINIMAL. CURRENTLY(10/00Z) THERE IS AN OCCLUDED FRONT CROSSING EASTERN LAKE MICHIGAN WITH A WARM FRONT FROM SOUTH BEND TO NORTH OF DAYTON OHIO WITH A QUASI-COLD FRONT FROM THE TRIPLE POINT NEAR SOUTH BEND TO NEAR IRK MO. THERE IS A WAVE ON THE FRONT BTW IRK/STL WHICH HAS AN AREA OF THUNDERSTORMS ON IT. THAT WAVE IS AN AREA OF MUCH HIGHER 850 MB DEW POINTS AND THAT DOES HEAD TOWARD LOWER MICHIGAN TOWARD MORNING. ACTUALLY THE LATEST RUC BRINGS IT IN BETWEEN 06Z AND 09Z SOUTH OF INTERSTATE 94. HOWEVER... THE LOW LEVEL JET (35 TO 45 KNOTS NEAR STL BY 09Z) IS MORE AIMED AT IND THAN ANY PLACE IN MICHIGAN. ALSO THE 850 LI INDEX RISES ABOVE 0C OVER MOST OF OUR CWA BY 03Z AS THE REMAINS OF THAT OCCLUDED FRONT MOVE EAST ACROSS THE STATE. AFTER 06Z WITH THAT NEXT WAVE ON THE FRONT HEADING NORTHEAST... THE 0 TO -2C 850 MB LI DOES NOSE INTO THE INTERSTATE 94 AREA. SO... I WILL UPDATE THE FORECAST TO PARTLY CLOUDY ACROSS THE CWA. I WILL ALSO HAVE A CHANCE OF THUNDERSTORMS LATE TONIGHT IN THE ROW OF COUNTIES NEAR INTERSTATE 94. THE THREAT FOR SEVERE THUNDERSTORMS OVERNIGHT IS MINIMAL. ZONES BY 915 PM. .GRR...NONE. WDM
MIZ037>040-043>046-050>052-056>059-064>067-071>074-101000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1240 PM EDT FRI MAY 9 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SOUTHWEST QUARTER OF LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS ACROSS THE AREAS SOUTH OF INTERSTATE 96 TODAY AND TONIGHT. LARGE HAIL AND DAMAGING WINDS ARE THE PRIMARY THREATS WITH THE STORMS. THE MAIN TIME FRAME FOR SEVERE THUNDERSTORMS TODAY IS LATE AFTERNOON AND EARLY EVENING. THE ATMOSPHERE WILL BECOME UNSTABLE THIS AFTERNOON...AND THERE IS A CHANCE THAT THUNDERSTORMS COULD FORM. ANY STORMS THAT DO FORM THIS AFTERNOON AND EVENING COULD BECOME SEVERE AND WILL TRACK NORTHEAST AT 35 MPH. A WARM FRONT WILL LIFT NORTH INTO THE REGION THIS AFTERNOON AND BECOME STATIONARY. THIS SYSTEM WILL BE THE MAIN FOCUSING MECHANISM FOR THE STORMS TODAY AND TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY FOR SATURDAY AND SATURDAY NIGHT...A MODERATE RISK FOR SEVERE THUNDERSTORMS EXISTS...ALONG AND SOUTH OF A LINE FROM MUSKEGON TO GRAND RAPIDS TO LANSING. THE REMAINDER OF THE REGION IS UNDER A SLIGHT RISK. A WIDESPREAD OUTBREAK OF SEVERE THUNDERSTORMS FEATURING LARGE HAIL...DAMAGING WINDS IS EXPECTED. IN ADDITION...A FEW TORNADOES ARE POSSIBLE...ESPECIALLY IN THE MODERATE RISK AREA. THE MAIN TIMEFRAME FOR THE SEVERE WEATHER IS SATURDAY EVENING. STORM MOVEMENT IS FORECASTED TO BE EAST AT 35 MPH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON OR EVENING. SPOTTER ACTIVATION WILL LIKELY BE NEEDED FOR LATER SATURDAY AFTERNOON THROUGH SATURDAY EVENING. OSTUNO
The Detroit radar (KDTX), 97 km away, was scanning. The volume nearest the first event began at 04:08 UTC.
2 hail. Local standard time, as filed.
One inch diameter hail was reported about one mile west of Brooklyn near Clark Lake.
An off duty police officer reported that an isolated severe thunderstorm produced one and three quarters inch diameter hail one miles west of Assyria.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2003Every state in 2003This day in weather historyWarnings in Michigan, May 2003
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: 5357044, 5357043.