4 hail, 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 Aug 2, 2:16 PM EST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 316 PM EDT MON AUG 2 2004 .SHORT TERM... PRIMARY FORECAST CHALLENGE IS FOR POPS TONIGHT THROUGH WEDNESDAY MORNING. FOR TONIGHT...ONGOING CONVECTION EXPECTED AS LOW LEVEL WARM AIR ADVECTION COMBINES WITH MOIST UNSTABLE AIRMASS IN PLACE TO PRODUCE SCATTERED DEEP CONVECTION. ISOLATED SEVERE POTENTIAL FOR HAIL AND PERHAPS A WET MICROBURST...BUT ORGANIZED SEVERE NOT EXPECTED EXCEPT PERHAPS ACROSS THE NORTHERN HALF OF THE FORECAST AREA GIVEN MARGINAL SHEAR PROFILES. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO CONTINUE THROUGH MUCH OF TUESDAY ACROSS THE SOUTHERN HALF OF THE FORECAST AREA AS LOW LEVEL CONVERGENCE IS FOCUSSED ALONG SFC FRONT SLOWLY SINKING SOUTH. WILL KEEP TUESDAY EVENING DRY...ALTHOUGH THERE MAY BE SOME LINGERING SHOWERS ALONG THE FRONT ACROSS THE FAR SOUTHERN CWA. LATER SHIFTS WILL HAVE TO WATCH THIS. DRIER AND COOLER AIR POURS IN FOR TUESDAY NIGHT AND WEDNESDAY AS AMPLIFYING H5 FLOW BRINGS NORTHERLY FLOW AND CRASHING THICKNESSES TO THE GREAT LAKES REGION. THE GFS HAS BEEN ADVERTISING THE COOLDOWN FOR SEVERAL DAYS AND THE ETA IS ON BOARD. THERE HAS BEEN AN ISSUE WITH THE ETA AND GFS BLOWING UP A QPF BULLSEYE THAT SKIRTS OUR SOUTHERN CWA AS A VORT CENTER MOVES ALONG THE BAROCLINIC ZONE SOUTH OF LOWER MICHIGAN LATE TUESDAY NIGHT INTO WEDNESDAY. WILL LEAVE WEDNESDAY DRY FOR NOW AS THERE IS STILL QUITE A BIT OF UNCERTAINTY WITH THE TRACK AND INTENSITY OF THIS FEATURE. .LONG TERM... MEDIUM RANGE MODELS SHOW THE CURRENT ZONAL FLOW TRANSITIONING TO A DEEP TROUGH OVER THE EASTERN LAKES AND NORTHEAST US BY SATURDAY. RUN TO RUN CONSISTENCY HAS BEEN PRETTY GOOD WITH THIS FEATURE. ON THE SFC HIGH PRESSURE EXTENDING FROM SOUTHERN ONTARIO INTO WISCONSIN WILL SLOWLY DRIFT EAST THROUGH THE PERIOD. WELL SEE A NORTH FLOW FROM THURSDAY NIGHT THROUGH SATURDAY NIGHT BEFORE THE HIGH MOVES TO OHIO AND WINDS OVER THE CWA VEER TO THE SOUTH. GFS SHOWS H85 TEMPS FALLING TO AROUND 4C BY SATURDAY MORNING ACROSS THE EASTERN CWA...BUT GFS HAS BEEN TOO COOL IN SIMILAR SITUATIONS THIS SUMMER...ALTHOUGH THE TREND IS PROBABLY OK. BY MONDAY THE GFS SHOWS ANOTHER FRONT MOVING TOWARD MICHIGAN EXTENDING FROM JAMES BAY SOUTHWEST TO THE CENTRAL PLAINS. WITH SOUTH FLOW AHEAD OF THE FRONT AND MOISTURE RETURN INCREASING THROUGH THE PERIOD...TSRA COULD AGAIN BE A PLAYER LATE IN THE DAY. WELL LEAVE OUT FOR NOW AS THE FRONT SHOULD STILL BE FAR ENOUGH TO THE NORTHWEST. && .GRR WATCHES/WARNINGS/ADVISORIES...SEVERE THUNDERSTORM WATCH IN EFFECT ENTIRE FORECAST AREA THROUGH 7 PM EDT. && OSTUNO 93
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1010 AM EDT MON AUG 2 2004 LMZ843>849-MIZ037>040-043>046-050>052-056>059-064>067-071>073-031004- ALLEGAN-BARRY-CALHOUN-CLARE-CLINTON-EATON-GRATIOT-INGHAM-IONIA- ISABELLA-KALAMAZOO-KENT-LAKE-MASON-MECOSTA-MONTCALM-MUSKEGON-NEWAYGO- OCEANA-OSCEOLA-OTTAWA-VAN BUREN- NEW BUFFALO TO MANISTEE, MI 1010 AM EDT MON AUG 2 2004 .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING. SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON...AND A LINE OF THUNDERSTORMS MAY MOVE ACROSS LAKE MICHIGAN THIS AFTERNOON AND ARRIVE IN SOUTHWEST LOWER MICHIGAN BY LATE AFTERNOON OR EARLY EVENING. THE MAIN THREAT WITH THESE STORMS WILL BE WINDS OF 60 MPH AND HAIL TO ONE INCH IN DIAMETER. HEAVY RAIN AND FREQUENT CLOUD TO GROUND LIGHTNING ARE ALSO POSSIBLE FROM THESE STORMS. THE AVERAGE STORM MOTION WILL BE EAST AT 40 MPH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE MAINLY SOUTH OF INTERSTATE 96 ON TUESDAY AS A COLD FRONT SLIPS SOUTH. SEVERE WEATHER IS NOT FORECASTED WITH THESE STORMS. COOLER AND MORE STABLE AIR WILL FILTER IN BEHIND THIS FRONT FOR THE REMAINDER OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON OR THIS EVENING. OSTUNO
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
212 PM EDT MON AUG 2 2004
MIZ037>040-043>046-050>052-056>059-064>067-071>074-022300-
ALLEGAN-BARRY-CALHOUN-CLARE-CLINTON-EATON-GRATIOT-INGHAM-IONIA-
ISABELLA-JACKSON-KALAMAZOO-KENT-LAKE-MASON-MECOSTA-MONTCALM-MUSKEGON-
NEWAYGO-OCEANA-OSCEOLA-OTTAWA-VAN BUREN-
212 PM EDT MON AUG 2 2004
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR ALL OF SOUTHWEST LOWER MICHIGAN EFFECTIVE UNTIL 700 PM EDT
MONDAY EVENING. THIS WATCH INCLUDES THE FOLLOWING COUNTIES
IN WEST CENTRAL MICHIGAN
MASON...LAKE...OCEANA...NEWAYGO AND MUSKEGON
IN CENTRAL MICHIGAN
OSCEOLA...CLARE...ISABELLA...MECOSTA...MONTCALM AND GRATIOT
IN SOUTHWEST MICHIGAN
KENT...ALLEGAN...BARRY...KALAMAZOO...VAN BUREN AND OTTAWA
IN SOUTH CENTRAL MICHIGAN
IONIA...CLINTON...INGHAM...EATON...JACKSON AND CALHOUN
THIS WATCH INCLUDES THE ADJOINING COASTAL WATERS OF AFFECTED
LAKESHORE COUNTIES.
RGThe Grand Rapids radar (KGRR), 86 km away, was scanning. The volume nearest the first event began at 19:28 UTC.
4 hail, 2 thunderstorm wind. Local standard time, as filed.
Three quarters inch hail was reported by the broadcast media in Blue Lake township.
Law enforcement four miles east of Grand Haven reported three quarters inch diameter hail.
A couple of trees were blown down in Chase and one tree was blown down across M-37 two miles south of Baldwin.
A trained spotter in Reed City reported that two trees were blown down.
The public reported three quarters inch diameter hail two miles east southeast of Hastings.
Three quarters inch diameter hail was reported by the public two miles south of Hoytville at the intersection of Needmore and Loucks roads. Law enforcement in Vermontville reported that a few large trees were blown down and blocked area roads.
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, August 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: 5419467, 5419463, 5419462, 5419464, 5419465, 5419466.