1 thunderstorm wind, as filed by the National Weather Service.
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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 Sep 23, 2:15 PM EST, 1 hour 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 315 PM EDT SUN SEP 23 2001 MAIN FORECAST PROBLEMS IN THE NEAR TERM ARE FOR POPS...WINDS AND TEMPS. SFC LOW CENTER OVER LAKE MICHIGAN ATTM. SOME LIGHTNING NOTED LAST HOUR OR TWO APPROACHING EXTREME SW GRR CWA. BEST CHC OF TSRA DURING THE EVENING WILL BE ACROSS THE SE QUARTER OF THE CWA...SO WILL LIMIT MENTION TO THERE. FOR TONIGHT...WILL KEEP CAT POPS DURING THE EVENING ACROSS THE EASTERN CWA TAPERING TO SCT SHRA AFT MIDNIGHT. FOR THE WESTERN HALF...WILL GO CHC POPS AS BACK EDGE OF DEEPER MOISTURE MOVES THROUGH BY 00Z. WINDS PICK UP TONIGHT AS STRONG CAA BEGINS. CONDITIONS UPSTREAM IN THE TIGHT GRADIENT SHOW SFC WINDS IN THE 10 TO 20 KT RANGE WITH GUSTS TO 30 KTS. 12Z MODELS WERE SLIGHTLY WEAKER WITH THE LL JET...BUT ARE STILL SHOWING WINDS GREATER THAN 40 KTS AT 2 KFT AGL DURING THE EARLY MORNING HOURS. CAA ONGOING AT THAT TIME WOULD SUGGEST SOME STRONG WINDS POSSIBLE OVERNIGHT AND DURING THE DAY ON MONDAY...THOUGH MOS WINDS ARE NOT PROGGED TO BE EXCESSIVE. WILL KEEP WINDY WORDING GOING FOR THE OVERNIGHT AND ON MON. UPPER LOW APPEARS TO BE A BIT MORE PROGRESSIVE THAN YESTERDAYS MODELS WERE SHOWING...BUT WILL BE OVER LOWER MICHIGAN ON MONDAY WITH SCATTERED SHRA EXPECTED TO DEVELOP IN THE INSTABILITY ASSOCIATED WITH THE UPPER COLD POOL. WITH STRONG CAA AND CLOUDS...WILL UNDERCUT NGM MOS MAXES ON MONDAY...AND GO WITH COMPROMISE WITH COLDER AVN MOS MAXES. WILL KEEP CHC POPS MON NIGHT AND TUE AS UPPER LOW SLOWLY MOVES EAST. WITH LOTS OF CLOUDS EXPECTED...WILL LIMIT DIURNAL TEMP RANGE. LATER SHIFTS WILL HAVE TO WATCH FOR POTENTIAL FOR SOME CLEARING TUE NIGHT...IN WHICH CASE...POTENTIAL FOR FROST WILL BE A PROBLEM. OSTUNO EXTENDED FORECAST DISCUSSION... ...UNSEASONABLY COOL WEATHER WITH A CHANCE OF SHOWERS WILL LINGER INTO WEDNESDAY. TEMPERATURES WILL MODERATE AND DRY WEATHER WILL RETURN FOR THE REMAINDER OF THE EXTENDED PERIOD... WITH THE H5 LOW JUST TO OUR EAST WEDNESDAY... WE WILL CONTINUE TO HANG ON TO A CONSIDERABLE AMOUNT OF CLOUD COVER. IMPULSES OF H5 ENERGY PINWHEELING AROUND THE UPPER LOW WILL GIVE US A CHANCE OF SHOWERS... THOUGH MOST OF THE DAY SHOULD BE DRY. WE WOULD LOGICALLY EXPECT THE BEST CHANCE FOR SHOWERS ACROSS OUR EASTERN CWA CLOSER TO THE H5 LOW... WHERE 90 PERCENT RH FROM 700 MB DOWN TO THE SFC WILL HANG AROUND THROUGH THE AFTERNOON AS 12Z AVN GUIDANCE AND TIME HEIGHT RH CROSS SECTIONS SUGGEST. THE H5 LOW AND TROUGH AXIS WILL FINALLY BEGIN TO SHIFT EAST THURSDAY AS A RIDGE OF HIGH PRESSURE BUILDS INTO OUR REGION. SO WE WILL FINALLY GET SOME SUNSHINE... WHICH WILL HELP TO BOOST MAX TEMPS INTO THE LOWER TO PERHAPS MIDDLE 60S AS INDICATED BY THE LATEST MEX GUIDANCE. FOR THE REMAINDER OF THE PERIOD... THE ECMWF THROUGH 12Z SATURDAY AND MRF GUIDANCE THROUGH THE WEEKEND SHOW A SFC HIGH PRESSURE RIDGE WILL DOMINATE OUR WX PATTERN. AS A RESULT WE/LL HAVE CLEAR TO PARTLY CLOUDY SKIES WITH SEASONABLE TEMPS IN THE 60S DAILY... AND LOWS MAINLY IN THE 40S. LAURENS .GRR...NONE.
The Grand Rapids radar (KGRR), 70 km away, was scanning. The volume nearest the first event began at 21:00 UTC.
1 thunderstorm wind. Local standard time, as filed.
An isolated severe thunderstorm produced wind gusts that blew down numerous 12-16 inch diameter trees. Most of the trees were blown down along an area just under a mile long and a tenth of a mile wide in Charlotte.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2001Every state in 2001This day in weather historyWarnings in Michigan, September 2001
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: 5269034.