Severe weather developed in advance of an upper level trough and in a deep convergence zone during the late afternoon and early evening hours. Large hail, high winds, along with a tornado occurred.
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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 episode as NWS ABR wrote it up.
Severe weather developed in advance of an upper level trough and in a deep convergence zone during the late afternoon and early evening hours. Large hail, high winds, along with a tornado occurred.
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 8, 2:35 PM CST, 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ABERDEEN SD 335 PM CDT WED AUG 8 2007 .SHORT TERM...TONIGHT THROUGH THURSDAY FORECAST CHALLENGES ARE SEVERE THUNDERSTORM POTENTIAL THIS EVENING...MAINLY ACROSS THE NORTHERN TIER COUNTIES OF SOUTH DAKOTA AND WEST CENTRAL MINNESOTA...ALONG WITH FOG/LOW STRATUS POTENTIAL TONIGHT...AND HIGH TEMPERATURES ON THURSDAY. PRESENTLY...A SURFACE TROF IS LOCATED NORTH TO SOUTH AND BASICALLY BISECTS SOUTH DAKOTA /RUNNING FROM NEAR POLLOCK TO BOWDLE TO HARROLD AND ON DOWN TO NEAR WINNER SOUTH DAKOTA/. PLENTIFUL INSTABILITY /2000-4000 JOULES PER KILOGRAM/ IS DEVELOPING THIS AFTERNOON AS THE MID/HIGH CLOUD- COVER HAS PRETTY MUCH DISSIPATED ENTIRELY...AND THE RADAR SHOWS IT AS SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE BEGINNING TO DEVELOP ACROSS PORTIONS OF NORTH CENTRAL AND NORTHEASTERN SOUTH DAKOTA. DECENT 0-6KM WIND SHEAR EXISTS IN THE ATMOSPHERE TODAY TO HELP SUPPORT LARGE HAIL AND POSSIBLY DAMAGING WIND WITH THESE STORMS. LATER TONIGHT...DEPENDING ON HOW FAR EAST THIS SURFACE TROF GETS BEFORE IT DISSIPATES OR STALLS OUT...EXPECTING FOG AND/OR LOW STRATUS TO DEVELOP ACROSS THE EASTERN FORECAST AREA WHERE THE SURFACE TROF WILL FAIL TO SCOUR OUT THE COPIOUS LOW LEVEL MOISTURE. ON THURSDAY...ANY FOG OR STRATUS THAT DEVELOPS WILL BURN OFF DURING THE MORNING HOURS...LEAVING THE FORECAST AREA UNDER A MOSTLY SUNNY SKY AND LIGHT WINDS AND WEAK SURFACE HIGH PRESSURE. FOLLOWED PERSISTENCE FOR THURSDAY HIGH TEMPERATURES AS NAM AND GFS 850HPA THERMAL PROGS STILL SUPPORTING 80S AND 90S ACROSS THE FORECAST AREA. .LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY EARLY ON THE MODELS ARE STILL DEPICTING ENERGY COMING THROUGH THE MID LEVEL RIDGE AND ACROSS THE FORECAST AREA. MIXED LAYER CAPES ARE PROGGED TO APPROACH ABOUT 3K JOULES/KG WITH ABUNDANT LOW LEVEL MOISTURE. SUSPECT THE EASTERN CWA STILL HAS A DECENT SHOT AT SOME STORMS FRIDAY AFTERNOON AND EVENING AHEAD OF LOW LEVEL BOUNDARY. MEANWHILE...CAPPING ALOFT WILL ALSO BE SPREADING ACROSS THE CWA SO CONVECTION CHANCES SHOULD DROP OFF DRAMATICALLY OVER THE WESTERN CWA FRIDAY NIGHT. FOR SATURDAY THROUGH SUNDAY WE GET A GLANCING BLOW FROM CANADIAN SURFACE HIGH WHICH SHOULD PROVIDE THE AREA WITH MAINLY DRY CONDITIONS. WAA/RETURN FLOW ON THE BACKSIDE OF THE SFC HIGH MAY PROVIDE FOR A STORM RISK SUNDAY NIGHT BEFORE MID LEVEL THERMAL RIDGE EXPANDS AGAIN ACROSS THE CWA AND CAPS THINGS OFF FOR THE FIRST PART OF NEXT WEEK. FURTHER OUT THE LATEST RUNS OF THE ECMWF AND GFS ARE RETROGRADING THE HOT MID LEVEL RIDGE A LITTLE MORE THAN PREVIOUS RUNS. THIS COULD EFFECTIVELY BRING SOME COOLER AIR SOUTH INTO THE FORECAST AREA BY THE MIDDLE OF NEXT WEEK. && .AVIATION... VFR CONDITIONS HAVE DOMINATED FOR THE MOST PART ACROSS ALL FOUR TERMINALS THUS FAR TODAY. THERE HAVE BEEN SOME BRIEF MVFR /1000 TO 3000 FT AGL/ CIGS DUE TO THE ULTRA-MOIST AIR BEING SHOVED NORTH AHEAD OF A SURFACE TROF SCOOTING ACROSS THE STATE. SCATTERED SHOWERS ARE BEGINNING TO DOT THE RADAR SCOPE AND CONFIDENCE IS INCREASING THAT THE KABR TERMINAL WILL SEE SOME RAIN...POSSIBLY SOME THUNDER TOO...WITHIN THE NEXT 3 HOURS. KATY COULD STILL SEE A SHOWER OR THUNDERSTORM A LITTLE BIT LATER THIS AFTERNOON OR EARLY THIS EVENING. OTHERWISE...THE MAIN CONCERN BECOMES WHAT TO DO WITH ALL THE LOW LEVEL MOISTURE IN PLACE OVER THE KABR AND KATY TERMINALS TONIGHT BEFORE THE SURFACE TROF PUSHES ALL THE WAY EAST INTO MINNESOTA DRAWING SOME DRIER/COOLER AIR INTO THE THOSE TWO TERMINALS. UNTIL THAT HAPPENS...EXPECTING SOME IFR FOG AND/OR LOW CEILINGS TO DEVELOP OVER THE KABR AND KATY TERMINALS AFTER SUNDOWN...AND LASTING POSSIBLY INTO TOMORROW MORNING. STARTED WITH 2SM BR FOR NOW AND WILL LOWER AS NEEDED. HIGH PRESSURE WILL ASSUME CONTROL OVER THE REGION ON THURSDAY...WITH VFR FLYING WEATHER RETURNING ONCE ANY FOG OR LOW STRATUS BURNS OFF TOMORROW MORNING. && .ABR WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. && SHORT TERM...DORN LONG TERM...TDK AVIATION...DORN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 531 AM CDT WED AUG 8 2007 MNZ039-046-SDZ004>011-016>023-034>037-048-051-091045- TRAVERSE-BIG STONE-CAMPBELL-MCPHERSON-BROWN-MARSHALL-ROBERTS- WALWORTH-EDMUNDS-DAY-POTTER-FAULK-SPINK-CLARK-CODINGTON-GRANT- HAMLIN-DEUEL-SULLY-HUGHES-HYDE-HAND-LYMAN-BUFFALO- 531 AM CDT WED AUG 8 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE POSSIBLE THIS MORNING THROUGH THIS EVENING AS A LOW PRESSURE SYSTEM MOVES SLOWLY EASTWARD ACROSS THE DAKOTAS. SOME THUNDERSTORMS THIS AFTERNOON AND EVENING COULD BECOME SEVERE WITH LARGE HAIL AND STRONG WINDS THE PRIMARY HAZARDS. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE WITH THE STRONGEST STORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS WILL AGAIN BE POSSIBLE THURSDAY THROUGH FRIDAY NIGHT. AT THIS TIME THERE APPEARS TO BE NO SIGNIFICANT SEVERE THUNDERSTORM POTENTIAL THOUGH ISOLATED SEVERE STORMS ARE POSSIBLE. ADDITIONAL THUNDERSTORMS ARE POSSIBLE SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND EARLY EVENING. SDZ003-015-033-045-091045- CORSON-DEWEY-STANLEY-JONES- 531 AM CDT WED AUG 8 2007 /431 AM MDT WED AUG 8 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA AND NORTH CENTRAL SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGHOUT THE MORNING HOURS AS A LOW PRESSURE SYSTEM MOVES SLOWLY EASTWARD ACROSS THE DAKOTAS. AT THIS TIME THESE STORMS ARE NOT EXPECTED TO BE SEVERE...BUT LOCALLY HEAVY RAINFALL IS POSSIBLE WITH STRONGER STORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE POSSIBLE THURSDAY AND FRIDAY. AT THIS TIME THERE APPEARS TO BE NO SIGNIFICANT SEVERE THUNDERSTORM POTENTIAL THOUGH ISOLATED SEVERE STORMS ARE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. NJE
The Aberdeen radar (KABR), 102 km away, was scanning. The volume nearest the first event began at 21:00 UTC.
14 hail, 1 tornado, 1 thunderstorm wind. Local standard time, as filed.
A tornado touched down briefly just northwest of Eureka. No damage was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2007Every state in 2007This day in weather historyThe tornado archive for South Dakota, 2007Warnings in South Dakota, August 2007
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: 58265, 57562, 58820, 58821, 58822, 57569, 58823, 57571, 57585, 58827, 57587, 58829, 58831, 57592, 57595, 58266.