2 hail, 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 6, 2:45 PM CST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 345 PM CDT TUE AUG 6 2002 LWR CLDS BRKG UP AS SUBSIDENCE AND HI PRES ALOFT TAKE OVR NOW. ALSO DRIER AIR INFILTRATING ERN HLF CWA FM THE COOL SFC HIGH TO THE EAST. OBVIOUSLY COOLEST LOWS TNGT EXPCD IN ERN CWA. SOME LWR CLDS COULD REDVLP LATER TNGT ESP IN HIGHER MOISTURE AREAS TO THE WEST. SKIES SHOULD BECOME MOSNY MOST AREAS ON WED WITH CONTD SUBSIDENCE AND MIXING EXPCD. GUID TEMPS SEEM ON THE COOL SIDE FOR WRN CWA...BUT CLOSE TO THE EAST. TROPICAL LIKE AIR SHOULD TAKE OVR AGAIN FROM LATER WED NGT THRU FRI WITH RETURN SLY FLW. PERIPHERY OF SUBTROPICAL HIGH ALOFT MAY PROVIDE NEXT CHC TSTMS INTO WRN CWA LATE WED NGT... BUT BTR CHC LATE THU SPRDG ESEWD OVR CWA THU NGT. NEW AVN AND CANADIAN SPCTRL IMPLY SLOWER MOVEMENT OF NEXT MAJOR TROF EWD OVR CWA THAN LAST NGTS MRF...AND WILL CARRY OVR SLOWER ADJ THRU EXTD. GOOD POPS FOR THU NGT AND AGAIN FRI NGT...DCRG FM W TO E LATER SAT... DVLPG AGAIN NWRN CWA LATE SUN NGT...OVR CWA FOR MON. OTRW TREND IS TOWARDS RELATIVELY COOLER AND WETTER PATTERN THRU EXTD...BUT NOT AS COOL AS FMR GUID. .FSD...NONE RYRHOLM
SIGNIFICANT WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1100 AM CDT TUE AUG 6 2002 *** THIS SIGNIFICANT WEATHER OUTLOOK FROM THE NATIONAL WEATHER SERVICE PERTAINS ONLY TO CONDITIONS ASSOCIATED WITH THUNDERSTORMS. *** .SYNOPSIS... HIGH PRESSURE WILL CONTINUE TO SLOWLY PUSH EAST TODAY...AS LOW PRESSURE DEVELOPS ACROSS THE WESTERN HIGH PLAINS. A COOL...STABLE AND MOIST LOW LEVEL AIR MASS WILL KEEP ANY ACTIVE WEATHER AWAY FROM THE AREA. SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098-IAZ001>003- 012>014-020>022-031-032-NEZ013-014-070500- BEADLE-KINGSBURY-BROOKINGS-LINCOLN-LYON-JERAULD-SANBORN-MINER-LAKE- MOODY-PIPESTONE-MURRAY-COTTONWOOD-BRULE-AURORA-DAVISON-HANSON-MCCOOK- MINNEHAHA-ROCK-NOBLES-JACKSON-GREGORY-CHARLES MIX-DOUGLAS-HUTCHINSON- TURNER-LINCOLN-LYON-OSCEOLA-DICKINSON-BON HOMME-YANKTON-CLAY-UNION- SIOUX-OBRIEN-CLAY-PLYMOUTH-CHEROKEE-BUENA VISTA-DIXON-DAKOTA-WOODBURY-IDA- INCLUDING THE CITIES OF...HURON...BROOKINGS...PIPESTONE...SLAYTON... CHAMBERLAIN...MITCHELL...SIOUX FALLS...LUVERNE...WORTHINGTON...ROCK RAPIDS... SPIRIT LAKE...YANKTON...VERMILLION...ELK POINT...SIOUX CENTER...SPENCER... LE MARS...STORM LAKE...SIOUX CITY... 1100 AM CDT TUE AUG 6 2002 * FORECAST THROUGH MIDNIGHT: SIGNIFICANT WEATHER IS NOT EXPECTED IN THIS AREA THROUGH MIDNIGHT. * SIGNIFICANT WEATHER: NONE. * SPOTTER ACTIVATION: SPOTTER ACTIVATION IS NOT ANTICIPATED. 08
The Aberdeen radar (KABR), 198 km away, was scanning. The volume nearest the first event began at 21:14 UTC.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
Large hail, driven by strong winds, broke windows in a hospital and other buildings, and also in numerous vehicles. The hail also stripped corn crops in the area. The amount of crop damage was not known.
Thunderstorm winds caused tree damage and tipped over a mobile home. The amount of damage was not known.
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: 5312460, 5312461, 5312459.