1 tornado, 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 Aberdeen, SD wrote its last area forecast discussion before the first event at Aug 23, 2:00 PM CST, 3 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ABERDEEN SD 3 PM CDT MON AUG 23 2004 .SHORT TERM...TONITE THROUGH THURSDAY NITE MAIN ISSUE THROUGH FORECAST PERIOD WILL BE CHANCE OF CONVECTION. FOR TNT DECENT SYSTEM OVER INTERMOUNTAIN WEST WILL BE LIFTING INTO SC CANADA...SPREADING UPPER LEVEL DIFFLUENCE AND LIFT ACROSS ABR CWA. MOISTURE CONTINUING TO SPREAD NORTH THIS AFTERNOON. WITH DEWPOINTS CLIMBING ABOVE 60 FOR MOST AREAS BY EARLY EVENING. SCATTERED ACTIVITY ACROSS EAST THIS EVENING WILL LIKELY BE REPLACED WITH MORE LINEAR STORMS LATE THIS EVENING AS AM EXPECTING MAIN ACTIVITY TO DEVELOP OUT WEST AND SPREAD ACROSS CWA OVERNIGHT. TUESDAY INTO TUESDAY EVE SHOULD BRING A RELATIVE LULL IN THE ACTIVITY AS EFFECTIVE MOISTURE AND LL BOUNDARIES PUSH OFF EAST AND SOUTH AND GRADUALLY DISSIPATE. BUT MODERATE LLJ EXPECTED TO RETURN TO CENTRAL/WESTERN SD LATE TUESDAY NIGHT AND MAY SEE SOME ACTIVITY WITH THAT. EMPHASIS ON WED AND THU SHOULD BE MAINLY OVER EASTERN CWA WHERE BEST MOISTURE WILL RESIDE AND NOCTURNAL LLJ WILL BE STRONGEST. TEMPS MODIFIED A BIT BUT WHEN ALL IS SAID AND DONE...THEY HAVENT BEEN CHANGED TOO MUCH. .LONG TERM...FRIDAY THROUGH MONDAY MEDIUM RANGE MODELS HAVE SIMILAR TREATMENT FOR WEST COAST UPPER TROUGH BUT DIFFER IN TIMING. ECMWF EJECTS THE TROUGH TO THE NORTHEAST INTO SOUTHERN CANADA ABOUT 24 HOURS FASTER THAN EITHER THE GFS OR DGEX. GFS AND DGEX VERY CLOSE THOUGH HAVE PRECIPITATION TIMING VARIES BETWEEN 6 TO 12 HOURS. OVERALL PATTERN SHOWS THE WEST COAST UPPER TROUGH MOVING EAST INTO THE CENTRAL AND NORTHERN PLAINS ACCOMPANIED BY A SURFACE FRONTAL SYSTEM. MODEL QPF INDICATES POTENTIAL FOR A MEASURABLE RAIN EVENT BEGINNING FRIDAY AND PERSISTING INTO EARLY SATURDAY MORNING. THE PRECIPITATION WILL MOVE EAST ACROSS THE CWA WITH THE SURFACE COLD FRONT FRIDAY. EXPECT WRAP AROUND PRECIPITATION TO LINGER INTO EARLY SATURDAY AS THE DEFORMATION SHIELD LIFTS TOWARD CANADA SATURDAY MORNING. FOR NOW KEPT SUNDAY AND MONDAY DRY THROUGH MODEL QPF HINTS THAT SHOWERS MAY RETURN MONDAY. SURFACE TEMPERATURES WILL COOL INTO THE 70S BEHIND THE COLD FRONT. 850 TEMPERATURES CONTINUE PAST TREND OF DIPPING INTO SINGLE DIGITS EARLY IN THE EXTENDED PERIOD BEFORE RECOVERING BETWEEN 10-15C LATE SUNDAY AND MONDAY WITH WEAK WARM AIR ADVECTION UNDER AN UPPER LEVEL SHORTWAVE RIDGE. && WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. && TDK/BM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 500 AM CDT MON AUG 23 2004 MNZ039-046-SDZ008-020>023-240946- BIG STONE-CODINGTON-DEUEL-GRANT-HAMLIN-ROBERTS-TRAVERSE- 500 AM CDT MON AUG 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA...AS WELL AS BIG STONE AND TRAVERSE COUNTIES IN MINNESOTA. .DAY ONE...TODAY AND TONIGHT STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND NORTH OF A WARM FRONT THAT WILL PUSH INTO CENTRAL SOUTH DAKOTA THIS AFTERNOON AND PROGRESS EASTWARD INTO MINNESOTA TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORM MAY BECOME SEVERE. THE MAIN THREAT OF ANY SEVERE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE EXPECTED TO REDEVELOP AHEAD OF A SURFACE TROUGH TUESDAY AFTERNOON IN EASTERN SOUTH DAKOTA AND WEST CENTRAL MINNESOTA. THERE IS A SLIGHT RISK THAT A FEW OF THESE STORMS WILL BECOME SEVERE. THE MAIN THREAT OF ANY SEVERE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING. SDZ003>007-009>011-015>019-033>037-045-048-051-240946- BROWN-BUFFALO-CAMPBELL-CLARK-CORSON-DAY-DEWEY-EDMUNDS-FAULK-HAND- HUGHES-HYDE-JONES-LYMAN-MARSHALL-MCPHERSON-POTTER-SPINK-STANLEY- SULLY-WALWORTH- 500 AM CDT MON AUG 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF CENTRAL...NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA...AS WELL AS BIG STONE AND TRAVERSE COUNTIES IN MINNESOTA. .DAY ONE...TODAY AND TONIGHT STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND NORTH OF A WARM FRONT THAT WILL PUSH INTO CENTRAL SOUTH DAKOTA THIS AFTERNOON AND PROGRESS EASTWARD INTO MINNESOTA TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORM MAY BECOME SEVERE. THE MAIN THREAT OF ANY SEVERE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING. LILES
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
250 PM CDT MON AUG 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0235 PM HAIL 3 NE PIERPONT 45.53N 97.79W
08/23/2004 0.75 INCH DAY SD PUBLIC
&&
HARDINGThe Sioux Falls radar (KFSD), 111 km away, was scanning. The volume nearest the first event began at 23:33 UTC.
1 tornado. Local standard time, as filed.
The tornado only caused damage to the cornfield it traveled through.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2004Every state in 2004This day in weather historyThe tornado archive for South Dakota, 2004Warnings in South Dakota, August 2004
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: 5420412.