2 thunderstorm wind, 1 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 Aug 4, 2:20 PM EST, 1 hour 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 320 PM EDT SUN AUG 4 2002 SHORT TERM DISCUSSION... CONCERNS WITH THE FORECAST ARE MAINLY RELATED TO FIRST PERIOD ASSOCIATED WITH THE FRONTAL BOUNDARY MOVING THROUGH TONIGHT AND THE CONVECTION ASSOCIATED WITH IT. BEYOND THAT...SURFACE RIDGING BUILDS IN WITH LITTLE IN THE WAY OF WEATHER CONCERNS. ALOFT...A WEAK SHORTWAVE WILL MOVE THROUGH THE SOUTHERN GREAT LAKES TONIGHT...WHICH WILL AID THUNDERSTORM ACTIVITY. BEYOND THAT...DIGGING UPPER TROUGHS IN THE PACIFIC NORTHWEST AND NEW ENGLAND WILL RESULT IN A BUILDING RIDGE OVER THE CENTER OF THE COUNTRY. THIS WILL PLACE THE GREAT LAKES IN NORTHWEST FLOW WITH A COOLING TREND INTO TUESDAY. AS FOR TONIGHT...CONVECTION IS THE MAIN CONCERN. AREA OF STORMS IS MOVING ONSHORE AT THIS TIME...AND IS BEGINNING TO INTENSIFY. STORMS ARE MOVING INTO A RIPE ENVIRONMENT WITH CAPES IN EXCESS OF 2000 J/KG. WOULD EXPECT THESE STORMS TO EVOLVE INTO MORE OF A LINEAR SYSTEM AND MOVE EAST. SEVERE THREAT SHOULD BE ALONG AND EAST OF HWY 131 AND ALONG AND SOUTH OF INTERSTATE 96. UNIDIRECTIONAL FLOW WOULD DICTATE THAT WINDS WILL BE THE MAIN THREAT WITH HIGH FREEZING LEVELS. OTHER SIGNIFICANT THREAT IS HEAVY RAIN. PRECIPITABLE WATER VALUES ARE IN EXCESS OF 2.00 INCHES...SO ANY STORMS THIS EVENING AND OVERNIGHT WILL BE CAPABLE OF VERY HEAVY RAINFALL AND POSSIBLE FLOODING. WILL CARRY SHOWERS AND THUNDERSTORMS THROUGH THE NIGHT...WITH THE FRONT STILL OFF TO THE NORTH. SHOWERS AND STORMS SHOULD END ACROSS THE NORTH TONIGHT...LINGERING INTO THE MORNING HOURS IN THE CENTRAL AND SOUTH. BOTH THE AVN AND ETA ARE INDICATING A SECOND WAVE OF ACTIVITY ROLLING THROUGH THE AREA OVERNIGHT. THIS WOULD MOST LIKELY COME FROM CONVECTION THAT DEVELOPS OUT TOWARD NORTHWEST ILLINOIS AND MOVES EAST ALONG THE FRONT. HEAVY RAIN WILL AGAIN BE A CONCERN WITH ANY SECONDARY ROUND OF ACTIVITY. RIDGING BUILDS IN AT THE SURFACE IN THE WAKE OF THE FRONT TOMORROW...SO WILL CONTINUE THE MOSTLY SUNNY/MOSTLY CLEAR FORECAST INTO TUESDAY NIGHT. A COOLING TREND WILL BE NOTED...AS NORTHWEST FLOW DROPS 850MB TEMPS INTO THE SINGLE DIGITS TUESDAY. WILL NOT STRAY FAR FROM GUIDANCE ON TEMPS. DUKESHERER EXTENDED FORECAST DISCUSSION... LATEST AVN RUN REINFORCES SOLUTION FOR MID LVL AND SFC RIDGE BUILDING ACROSS THE PLAINS...STRETCHING EAST INTO CENTRAL GREAT LAKES. AVN/CANADIAN SOLUTIONS REMAIN IN AGREEMENT ON TWO TROUGHS. ONE LOCATED ACROSS NORTHERN NEW ENGLAND...THE OTHER ACROSS THE PACIFIC NW. SLIGHT DEEPENING MID-WEEK FROM WESTERN TROUGH BEFORE WEAKENING TOWARDS WEEKS END. ECMWF IS SHOWING MORE PROGRESSION AT ALLOWING SFC HIGH TO EXTEND FURTHER EAST. BUT WILL GO WITH A MORE CONSERVATIVE APPROACH AND KEEP LWR MI IN NW FLOW TILL THURSDAY EVE. WARMING TREND BEGINS NEAR WEEKS END. AVN FRIDAY OUTLOOK SHOWS A DEVELOPING FRONT ACROSS CENTRAL PLAINS. WHICH WILL REINFORCE THE CHANCE FOR SHOWERS AND THUNDERSTORMS ON SATURDAY/SUNDAY WITH FRONTAL PASSAGE...TIMING WILL BE BETTER DEFINED IN LATER RUNS. 850MB TEMPS SHOW ONLY SLIGHT MODIFICATION FROM FRIDAY-SUNDAY KEEPING RANGE FROM 13-16 DEG C. BEACHLER .GRR...NONE.
MIZ037>040-043>046-050>052-056>059-064>067-071>074-051100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 115 PM EDT SUN AUG 4 2002 ...HAZARDOUS WEATHER POTENTIAL STATEMENT FOR THE SOUTHWEST QUARTER OF LOWER MICHIGAN FOR TODAY AND TONIGHT... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS. HAZARDS... SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING ACROSS SOUTHERN LOWER MICHIGAN...BETWEEN 200 PM AND MIDNIGHT. THE STORM PREDICTION CENTER HAS PLACED AREAS ALONG AND SOUTH OF A LINE FROM GRAND HAVEN TO ALMA UNDER A SLIGHT RISK FOR SEVERE WEATHER. THE BIGGEST THREATS FROM THE STORMS THIS AFTERNOON AND EVENING WILL BE VERY HEAVY RAINFALL AND STRONG WIND GUSTS. THE STRONGEST OF STORMS COULD CONTAIN LOCALIZED WIND GUSTS TO AROUND 60 MPH AND RAINFALL RATES IN EXCESS OF ONE INCH PER HOUR. THUNDERSTORM MOVEMENT WILL BE TO THE EAST AT 30 MPH. DISCUSSION... A COLD FRONT SITUATED FROM NORTHERN LOWER MICHIGAN SOUTHWEST INTO WISCONSIN WILL GRADUALLY PUSH THROUGH THE AREA THIS EVENING. THIS FRONTAL BOUNDARY WILL BE INTERACTING WITH A WARM AND UNSTABLE AIRMASS ACROSS SOUTHWEST LOWER MICHIGAN. THUNDERSTORMS ARE EXPECTED ALONG AND AHEAD OF THIS BOUNDARY...SOME OF WHICH COULD REACH SEVERE LEVELS. GIVEN THE AMOUNT OF MOISTURE THAT IS PRESENT IN THE ATMOSPHERE...HEAVY RAIN IS LIKELY. FLOODING IS A POSSIBILITY BENEATH THE STRONGER STORMS. SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. ...HAZARDOUS WEATHER POTENTIAL STATEMENT FOR MONDAY THROUGH THURSDAY... HAZARDOUS WEATHER IS NOT EXPECTED IN THE OUTLOOK PERIOD OF MONDAY THROUGH THURSDAY. DUKESHERER
MIZ058-059-065>067-072>074-050000-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
410 PM EDT SUN AUG 4 2002
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR PORTIONS OF THE SOUTHWEST QUARTER OF LOWER MICHIGAN EFFECTIVE
UNTIL 800 PM EDT SUNDAY EVENING. THIS WATCH INCLUDES THE FOLLOWING
COUNTIES
IN SOUTH CENTRAL MICHIGAN
IONIA...CLINTON...INGHAM...EATON...JACKSON AND CALHOUN
IN SOUTHWEST MICHIGAN
BARRY AND KALAMAZOO
A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR
THE DEVELOPMENT OF SEVERE THUNDERSTORMS IN AND NEAR THE WATCH AREA.
REMEMBER...SEVERE THUNDERSTORMS PRODUCE WIND GUSTS IN EXCESS OF 58
MPH AND/OR HAIL THREE-QUARTERS OF AN INCH IN DIAMETER OR GREATER. IF
YOU LIVE IN OR NEAR THE WATCH AREA YOU SHOULD REMAIN ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS. STAY TUNED TO NOAA WEATHER RADIO OR THE
LOCAL NEWS OUTLETS FOR THE LATEST UPDATES AND POSSIBLE WARNINGS.The Grand Rapids radar (KGRR), 96 km away, was scanning. The volume nearest the first event began at 20:32 UTC.
2 thunderstorm wind, 1 hail. Local standard time, as filed.
Three quarters inch hail was reported by spotters three miles northeast of Burlington (Calhoun county).
A tree was blown down in Pulaski by a severe thunderstorm wind gust, as reported by area law enforcement.
Spotters two miles west of Napoleon reported that a thunderstorm wind gust blew down one tree.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2002Every state in 2002This day in weather historyWarnings in Michigan, August 2002
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: 5315582, 5315583, 5315584.