1 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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Aug 9, 2:30 PM CST, 2 hours 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 330 PM CDT FRI AUG 9 2002 SFC TROF HANGING IN THERE FM ERN DKTS TO CNTRL NE ATTM AND WILL BE FOCAL POINT FOR MORE TSTM DVLPMT THIS EVE. FIRST ROUND OF TSTMS IN CNTRL SD MAINLY ASSCD WITH LEFT FNT QUAD OF JET MAX MOVG INTO CNTRL NE. EXPCT RRQ OF JET MAX TO FIRE TSTMS IN CNTRL NE TO SCNTRL SD EARLY TNGT...WHICH SHOULD RAPIDLY DVLP NEWD OVR CWA THIS EVE... LINGERING IN ERN CWA LATE TNGT. WILL GO MORE WITH AVN MODEL IN THIS REGARD...WITH LKLY POPS TNGT. NOTHING EXCPT SC AND BRISK WNWLY WNDS MAIN NERN HLF CWA FOR MIDDAY SAT...BUT THEN WARM ADV...CLRG AND LGTR WNDS EXPCD BY LATE AFTN. MOST GUID TEMPS SEEM ON THE WARM SIDE THRU WEEKEND...AND WILL SHADE BACK SOME. BUT EXPCT BTR MIXING TO POTENTIAL THAN LAST COUPLE OF DAYS. BRISK RETURN SLY FLW SHOULD BRING BACK GULF MOISTURE INTO AREA BY SUN NGT AHEAD OF STG WAVE... WHICH AMERICAN MODELS STILL SEEM TOO FAST WITH. WENT MORE WITH CANADIAN SPCTRL AND UKMET WITH A LIT SLOWER TIMING OF FNT AND SCT SHWRS AND TSTMS FOR SUN NGT INTO MON. WENT WITH COOL TREND FOR TUE THRU FRI. THERE IS A CHC OF SHWRS WITH VARIOUS WEAK WAVES IN THE FLOW DURG EXTD...BUT ALL MODELS KIND OF DIFFERENT AND CONFIDENCE LOW...AND WILL LV OUT. .FSD...NONE RYRHOLM
The Sioux Falls radar (KFSD), 140 km away, was scanning. The volume nearest the first event began at 22:45 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds caused tree damage, including five inch diameter limbs blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2002Every state in 2002This day in weather historyWarnings in South Dakota, 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: 5312527.