1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Sep 24, 1:33 PM CST, 3 hours 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 233 PM CDT TUE SEP 24 2002 SOUTHERLY FLOW HELPING WARM THINGS UP ACROSS CWA WITH LOW 70S OVER THE WESTERN CWA AND UPPER 50S AND LOW 60S EASTERN CWA. SHOULD SEE A LITTLE INCREASED WARMING OVER THE EAST AS THE WARM ADVECTION CLOUDS CLEAR. WATER VAPOR LOOP SHOWS INCOMING WEATHER MAKERS...MAIN WAVE OVER ALBERTA AND ANOTHER NICE WAVE DROPPING INTO WASHINGTON. WARM SOUTHERLY FLOW WILL REMAIN IN PLACE FOR THE SOUTHEASTERN THIRD TO TWO THIRDS OF THE CWA TONIGHT. THIS WILL KEEP VERY MILD CONDITIONS IN PLACE WITH TEMPS ONLY FALLING TO AROUND 50. THE NORTHWEST CWA WILL SEE COLDEST TEMPS WHERE MID 40S WILL BE POSSIBLE AS FRONT AND POSSIBLE PRECIP MOVE THROUGH. WILL CONTINUE CHANCE FOR LATE NIGHT THUNDERSTORMS OVER FAR WEST WITH AXIS OF INSTABILITY. FOR WEDNESDAY...FRONT MUCH QUICKER ON TODAYS RUN THAN YESTERDAY. MID SHIFT BACKED HIGHS OFF ALREADY AND WILL CONTINUE GOING HIGHS. GOOD FORCING AND GOOD MOISTURE ALONG STRONG BAROCLINIC ZONE WILL BRING RAIN AND A FEW THUNDERSTORMS ACROSS MOST OF THE CWA DURING THE DAY. THE ONLY EXCEPTION MAY BE FAR SOUTHEAST WHERE FRONT IS SLOWEST TO GET TO. BY WEDNESDAY NIGHT...BOTH MODELS INDICATING ANOTHER WEAK WAVE TO EJECT ACROSS NEBRASKA SPREADING MORE PRECIP ACROSS THE AREA. WILL HAVE HIGHEST POPS SOUTHEAST AND ENDING NORTHWEST. THURSDAY SHOULD BE A PRETTY CHILLY DAY WITH LIGHTER WINDS AND COOL LOW LEVEL TEMPS. IN THE LATTER PERIODS...WARMING TREND STILL ON THE WAY BUT MODELS NOW SUGGESTING A WEAK WAVE TO MOVE THROUGH ON SATURDAY. WITH ALL OF THE MOISTURE BEING USED UP OUT EAST...BELIEVE ANY PRECIP THAT FALLS WOULD BE LIGHT. HAVE NOT INTRODUCED POPS YET BUT WILL BE SOMETHING TO WATCH. .FSD...NONE 08
The Sioux Falls radar (KFSD), 103 km away, was scanning. The volume nearest the first event began at 23:31 UTC.
1 thunderstorm wind. Local standard time, as filed.
According to a report from the county extension officer, small hail, accompanied by gusty winds, caused damage to corn and soybean crops.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2002Every state in 2002This day in weather historyWarnings in Iowa, September 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: 5320716.