2 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 30, 1:12 PM EST, 58 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 212 PM EDT SUN MAY 30 2004 .SHORT TERM... IR LOOP SHOWS AN MCS OVER SOUTHERN LAKE MICHIGAN/NORTHERN ILLINOIS MOVING EAST. KGRR-88D SHOWS THE LEADING EDGE OF THE PCPN SHIELD CROSSING LAKE MICHIGAN. A WARM FRONT STRETCHED FROM NEAR GOSHEN TO JUST NORTH OF ROCKFORD IL. A SFC LOW WAS IN NORTHEAST SOUTH DAKOTA WITH A COLD FRONT STRETCHING FROM NORTHERN IOWA SOUTH TO EASTERN OKLAHOMA. CONVECTION AND THE THREAT OF HEAVY RAIN DURING THE NEXT 24 HOURS IS THE MAIN CONCERN TONIGHT. RAIN WILL MOVE INTO THE CWA DURING THE NEXT COUPLE OF HOURS. THE POTENTIAL EXISTS FOR STRONG WINDS MAINLY ACROSS THE SOUTHERN CWA WHERE INSTABILITY AND HELICITY ARE A BIT STRONGER. STRONGEST JET DYNAMICS ARE ALSO SOUTH OF THE CWA. RADAR ESTIMATES OF RAIN TO THE WEST SHOW A BROAD AREA OF .5 TO 1 INCH WITH SMALLER VALUES OF 1-2 INCHES. WOULD EXPECT RAINFALL TO BE A BIT LESS THAN THAT HERE SINCE DYNAMICS ARENT QUITE AS STRONG AS THEY ARE TO THE WEST AND SOUTH. WILL KEEP THE MENTION OF POTENTIAL HEAVY RAIN IN THE FORECAST TONIGHT. SEVERE POTENTIAL EXISTS TONIGHT WITH THE WARM FRONTAL BOUNDARY ACROSS THE SOUTHERN PART OF THE STATE AND NOSE OF THE MID LEVEL JET MOVES INTO FAR SOUTHWEST LOWER MICHIGAN. ON MONDAY A STRONG SHORT WAVE ACCOMPANIES THE COLD FRONT INTO THE CWA. LIS FALL TO -4C BY LATE MORNING. 300 MB JET MOVES ACROSS THE CWA DURING THE MORNING. AS THE FREEZING LEVEL BEGINS TO FALL HAIL WILL BECOME MORE OF A THREAT. INSTABILITY WILL DECREASE DURING THE LATE AFTERNOON. MONDAY NIGHT THROUGH WEDNESDAY...OCCLUDED LOW WILL REMAIN IN THE AREA THROUGH WEDNESDAY BEFORE MOVING INTO NEW ENGLAND. COLD TEMPS ALOFT WILL KEEP THE CHC OF TSRA IN THE FORECAST THROUGH WEDNESDAY EXCEPT FOR TUESDAY NIGHT WHEN INSTABILITY WILL BE LOWER TO GO WITH SHRA VS TSRA. .LONG TERM... THE LONG TERM PORTION OF THE FORECAST BEGINS WED NIGHT WITH AN UPPER TROUGH AND ASSOCIATED SFC FRONT PASSING SOUTH OF THE AREA. ANY PCPN LOOKS TO BE OUT OF THE AREA BY 00Z THU...SO WILL GO WITH A DRY FORECAST FOR WED NIGHT. UPPER AND SFC RIDGING THEN LOOKS TO BUILD INTO THE AREA BEGINNING THU AND LASTING THROUGH FRI. AN UPPER TROUGH DOES TRY TO DEVELOP SOUTH OF THE STATE LATE THU NIGHT DUE TO A SPEED MAX DIGGING SE...BUT THIS SHOULD BE FAR ENOUGH AWAY TO ALLOW FOR DRY CONDITIONS TO CONTINUE IN LOWER MI. AS THE RIDGING BEGINS TO MOVE EAST OF THE AREA ON SAT...ANOTHER UPPER TROUGH AND ASSOCIATED SFC FRONT WILL BEGIN TO MOVE TOWARD THE AREA. THESE FEATURES ARE STILL EXPECTED TO ARRIVE IN SW LOWER SAT NIGHT AND SUN. THIS WILL BRING A CHC OF SOME SHOWERS AND STORMS TO THE AREA FOR SAT NIGHT AND SUN. && .GRR...NONE. 93 NJJ
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1010 AM EDT SUN MAY 30 2004 MIZ037>040-043>046-050>052-056>059-064>067-071>074-311000- ALLEGAN-BARRY-CALHOUN-CLARE-CLINTON-EATON-GRATIOT-INGHAM-IONIA- ISABELLA-JACKSON-KALAMAZOO-KENT-LAKE-MASON-MECOSTA-MONTCALM-MUSKEGON- NEWAYGO-OCEANA-OSCEOLA-OTTAWA-VAN BUREN- 1010 AM EDT SUN MAY 30 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE POSSIBLE ACROSS ALL OF THE SOUTHWEST QUARTER OF LOWER MICHIGAN TODAY AND TONIGHT. STORMS WILL BE MOST NUMEROUS THIS AFTERNOON THROUGH THE OVERNIGHT AS A FRONTAL SYSTEM PUSHES THROUGH THE AREA. THERE IS A CHANCE THAT A FEW OF THESE STORMS MAY REACH SEVERE LEVELS...ESPECIALLY SOUTH OF A LINE FROM MUSKEGON TO NEAR LANSING WHERE THE STORM PREDICTION CENTER HAS PLACED A SLIGHT RISK. SOME OF THE THUNDERSTORMS COULD BE CAPABLE OF PRODUCING WINDS TO 65 MPH WITH A TORNADO POSSIBLE SOUTH OF I-94. THE MOST SIGNIFICANT WEATHER CONCERN WILL BE THE THREAT FOR HEAVY RAIN. WIDESPREAD RAINFALL AMOUNTS BETWEEN A HALF AND ONE INCH ARE EXPECTED. SOME LOCATIONS MAY SEE MORE THAN THAT ACROSS WESTERN LOWER MICHIGAN TOWARD THE LAKE. AREA RIVERS REMAIN HIGH AND IT WILL NOT TAKE A LOT OF RAIN TO DELAY THE FALL OR EVEN PRODUCE RISES ONCE AGAIN. RIVER FORECASTS LATER TODAY WILL BETTER PROJECT HOW THE RIVERS WILL RESPOND. LOCAL PONDING OF WATER AND RISES IN SMALLER STREAMS CAN BE EXPECTED AS WELL GIVEN FAIRLY SATURATED GROUND. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS WILL BE POSSIBLE MONDAY AND TUESDAY. THE MAIN THREAT FROM STORMS BOTH DAYS WILL ONCE AGAIN BE HAIL. THE HEAVY RAIN POSSIBLE TONIGHT WILL LINGER INTO MONDAY BEFORE TAPERING OFF MONDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS A POSSIBILITY THIS AFTERNOON THROUGH OVERNIGHT. DUKE 93
The Grand Rapids radar (KGRR), 44 km away, was scanning. The volume nearest the first event began at 19:07 UTC.
2 thunderstorm wind. Local standard time, as filed.
The public reported that a few trees were blown down near Hamilton.
A trained spotter four miles west of Schoolcraft estimated a wind gust to 60 m.p.h.
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: 5402304, 5402303.