1 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 9, 2:30 PM CST, 4 hours 20 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
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
619 PM CDT FRI AUG 09 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0530 PM 8 S DALLAS SD .75 INCH HAIL
08/09/02 GREGORY REPORTED BY PUBLIC.
0543 PM 5 WNW STORLA SD 60 MPH TSTM GUST
08/09/02 AURORA 5 INCH TREE LIMBS DOWN.
REPORTED BY PUBLIC.
0545 PM 11 S BURKE SD .75 INCH HAIL
08/09/02 GREGORY REPORTED BY STORM
SPOTTER.
0556 PM 8 WSW LETCHER SD .88 INCH HAIL
08/09/02 SANBORN REPORTED BY STORM
SPOTTER.
0556 PM 8 WSW LETCHER SD 60 MPH TSTM GUST
08/09/02 SANBORN
0556 PM 2 S BURKE SD 1.5 INCH HAIL
08/09/02 GREGORY REPORTED BY LAW
ENFORCEMENT OFFICIAL.
0557 PM 1 E STORLA SD .88 INCH HAIL
08/09/02 AURORA REPORTED BY STORM
SPOTTER.
0559 PM PLATTE SD .75 INCH HAIL
08/09/02 CHARLES MIX REPORTED BY LAW
ENFORCEMENT OFFICIAL.
0605 PM BONESTEEL SD 1.75 INCH HAIL
08/09/02 GREGORY REPORTED BY COOPERATIVE
OBSERVER.
0609 PM 3 W LETCHER SD 60 MPH TSTM GUST
08/09/02 SANBORN REPORTED BY STORM
SPOTTER.
0609 PM 3 W LETCHER SD .88 INCH HAIL
08/09/02 SANBORN REPORTED BY STORM
SPOTTER.
0610 PM 3 W LETCHER SD 1 INCH HAIL
08/09/02 SANBORN REPORTED BY STORM
SPOTTER.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
717 PM CDT FRI AUG 09 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0635 PM PICKSTOWN SD .88 INCH HAIL
08/09/02 CHARLES MIX REPORTED BY COOPERATIVE
OBSERVER. EVENT
DURATION 10 MINUTES.
FEW QUARTER SIZE.
0635 PM PICKSTOWN SD WIND DAMAGE
08/09/02 CHARLES MIX REPORTED BY COOPERATIVE
OBSERVER. 8 FOOT BY 10
FOOT METAL UTILITY SHED
DESTROYED.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
738 PM CDT FRI AUG 09 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0650 PM 4 E PICKSTOWN SD .88 INCH HAIL
08/09/02 CHARLES MIX REPORTED BY PUBLIC.
WINDS ESTIMATED AT
LEAST 60 MPH WITH TOTAL
CROP DAMAGE.
0720 PM 3 N AVON SD .75 INCH HAIL
08/09/02 BON HOMME REPORTED BY PUBLIC.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
742 PM CDT FRI AUG 09 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0737 PM 6 NE AVON SD .88 INCH HAIL
08/09/02 BON HOMME REPORTED BY STORM
SPOTTER.The Sioux Falls radar (KFSD), 115 km away, was scanning. The volume nearest the first event began at 00:50 UTC.
1 hail, 1 thunderstorm wind. Local standard time, as filed.
Large hail caused extensive damage to corn and soybean crops.
Thunderstorm winds knocked over three stone war monuments, two of which broke into several pieces when they fell. The winds also caused tree and power line damage.
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: 5312610, 5312611.