A severe thunderstorm produced wind gusts to 60 mph and penny sized hail near Camp Crook.
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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 UNR wrote it up.
A severe thunderstorm produced wind gusts to 60 mph and penny sized hail near Camp Crook.
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 Rapid City, SD wrote its last area forecast discussion before the first event at Aug 29, 1:50 PM MST, 4 hours 36 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 250 PM MDT SUN AUG 29 2010 .DISCUSSION...CURRENT SURFACE ANALYSIS HAS LOW PRESSURE OVER WESTERN SD...WITH FRONTAL BOUNDARY STRETCHING FROM EASTERN ND TO CENTRAL WY. OVER OUR AREA...THE FRONT STRETCHES FROM NEAR PHILIP...WESTWARD TO THE BLACK HILLS...AND OVER SOUTHERN PARTS OF NORTHEASTERN WY. UPPER LEVEL ANALYSIS HAS LONG WAVE TROF OVER THE PACIFIC NW...BEGINNING TO MOVE SLOWLY EASTWARD. STRONG JET IS IN PLACE FROM EASTERN NV TO CENTRAL MT. SOUTHWEST FLOW ALOFT CONTINUES FROM THE SOUTHWEST CONUS INTO THE NORTHERN PLAINS...WITH A SERIES OF DISTURBANCES IN THE FLOW. NEXT ONE UPSTREAM IS MOVING NORTHEAST ACROSS SOUTH CENTRAL WY. CLOUDINESS IS INCREASING OVER THE SOUTHWESTERN CWA AS SHOWERS ARE DEVELOPING OVER SOUTHEASTERN WY. TEMPS RANGE FROM THE UPPER 70S AND 80S ACROSS NORTHEASTERN WY...THE BLACK HILLS...AND NORTHWESTERN SD...TO THE MID TO UPPER 90S ACROSS PORTIONS OF SOUTHWESTERN INTO SOUTH CENTRAL SD. UNSETTLED WX WILL CONTINUE INTO THE FIRST PART OF THE WEEK AS SOUTHWEST FLOW REMAINS OVER THE REGION. BEST CHANCES FOR PCPN LOOK TO BE TONIGHT ACROSS WESTERN AREAS AND AGAIN MONDAY AFTERNOON INTO MONDAY NIGHT ACROSS MUCH OF THE AREA AS DISTURBANCES CROSS THE REGION. TEMPS WILL GRADUALLY COOL BACK TO MORE SEASONABLE LEVELS FROM NORTHWEST TO SOUTHEAST OVER THE NEXT COUPLE OF DAYS AS FRONT EVER SO SLOWLY MAKES ITS WAY OUT OF THE AREA BY MONDAY NIGHT. FOR TONIGHT...SKIES WILL CLOUD BACK UP ACROSS WESTERN AREAS WITH SHOWERS AND STORMS DEVELOPING. BETTER CHANCES FOR RAINFALL WILL BE FROM NORTHEASTERN WY INTO FAR WESTERN SD. LOWS WILL BE IN THE 50S AND 60S...WARMEST OVER SOUTH CENTRAL SD. FRONT WILL REMAIN NEARLY STATIONARY FROM CENTRAL SD INTO NORTHEASTERN WY. FRONT WILL GENERALLY REMAIN ACROSS THE MIDDLE OF THE CWA MONDAY AS UPPER TROF STARTS TO MOVE EAST ACROSS THE NORTHERN ROCKIES. HIGHS WILL RANGE FROM THE 70S OVER NORTHWESTERN PORTIONS OF THE CWA...TO THE LOWER 90S ACROSS SOUTH CENTRAL SD. BULK OF CLOUDINESS AND LINGERING SHOWER ACTIVITY WILL BE ACROSS WESTERN AREAS IN THE MORNING. SOME LOW CLOUDS AND PATCHY FOG LOOK POSSIBLE ACROSS THE FAR NORTHWESTERN CWA EARLY...BUT MAIN POTENTIAL LOOKS TO BE NORTH OF THIS AREA. AS A STRONG WAVE LIFTS NORTHEAST INTO THE AREA IN THE AFTERNOON...SHOWER AND THUNDERSTORM ACTIVITY SHOULD BECOME MORE WIDESPREAD. A SLIGHT RISK FOR SEVERE STORMS IS STILL IN THE FORECAST ALONG AND EAST OF THE FRONTAL BOUNDARY ACROSS THE SOUTH CENTRAL SD AREA...BUT THE THREAT FOR A FEW STRONG TO SEVERE STORMS STILL LOOKS POSSIBLE ANYWHERE FROM THE BLACK HILLS AREA EASTWARD IN THE AFTERNOON AND EARLY EVENING. MODERATE INSTABILITY WILL POOL OVER SOUTH CENTRAL SD AHEAD OF THE FRONT...WITH CAPE VALUES OF OVER 1000 J/KG EXPECTED BY LATE AFTERNOON. STRONG LOW LEVEL JET AHEAD OF THE FRONT WILL HELP GENERATE DECENT SHEAR IN THIS AREA AS WELL. WILL KEEP LIKELY POPS OVER MUCH OF THE WESTERN CWA MONDAY AFTERNOON...WITH BEST POP CHANCES MONDAY EVENING BEING OVER THE EASTERN CWA. BULK OF ACTIVITY WILL EXIT AREA AFTER MIDNIGHT. TUESDAY WILL BE SEASONABLY MILD ACROSS THE ENTIRE AREA AS FRONT WILL HAVE FINALLY MOVED EAST OF THE REGION. THERE IS STILL POTENTIAL FOR A FEW SHOWERS AND POSSIBLY A THUNDERSHOWER OVER NORTHERN PORTIONS OF THE CWA DURING THE DAY AS UPPER TROF LINGERS AND WEAKENS OVER THE CENTRAL MT AREA. WILL KEEP AN EXPANDED SLIGHT CHANCE FOR POPS TUESDAY NIGHT AS A WEAK WAVE IN WEST-SOUTHWEST FLOW PASSES THROUGH THE REGION. EXTENDED...AN UPPER LEVEL TROUGH WILL CROSS THE NORTHERN PLAINS WEDNESDAY AND WEDNESDAY NIGHT BRINGING A CHANCE OF SHOWERS AND THUNDERSTORMS. THE UPPER TROUGH WILL MOVE EAST OF THE FORECAST REGION ON THURSDAY. AN UPPER RIDGE WILL BUILD OVER THE ROCKIES THURSDAY SHIFTING SLOWLY EASTWARD WITH THE AXIS OF THE UPPER RIDGE OVER THE FORECAST AREA ON SUNDAY. DRY WEATHER AND NEAR OR SLIGHTLY COOLER THAN NORMAL TEMPERATURES ARE EXPECTED FROM THURSDAY THROUGH THE WEEKEND. && .AVIATION...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED OVERNIGHT. MVFR CONDITIONS WITH LOCALIZED IFR CIGS/VSBYS WILL DEVELOP OVER PARTS OF NORTHWESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING AFTER 09Z WITH CONDITIONS IMPROVING TO VFR OVER ALL BUT A SMALL PART OF FAR NORTHWESTERN SOUTH DAKOTA BY 18Z. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 400 AM MDT SUN AUG 29 2010 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-301300- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 400 AM MDT (500 AM CDT) SUN AUG 29 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT HOT AND DRY CONDITIONS WILL COMBINE WITH DRY FUELS TO PLACE THE GRASSLAND FIRE DANGER INDEX IN THE EXTREME CATEGORY TODAY OVER SOUTHWEST...WEST CENTRAL...AND SOUTH CENTRAL SOUTH DAKOTA. ISOLATED THUNDERSTORMS WILL BE POSSIBLE TODAY INTO TONIGHT. ALTHOUGH SEVERE WEATHER IS NOT EXPECTED...VARIABLE AND GUSTY WINDS WILL BE POSSIBLE WITH THESE STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY CHANCES FOR THUNDERSTORMS WILL REMAIN IN THE FORECAST FOR VARIOUS PARTS OF THE AREA THROUGH WEDNESDAY. THERE IS A SLIGHT RISK THAT SOME STORMS MAY BECOME SEVERE ON MONDAY...PARTICULARLY ALONG AND EAST OF A LINE FROM PHILIP TO PINE RIDGE. LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE MAIN THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
The Rapid City radar (KUDX), 178 km away, was scanning. The volume nearest the first event began at 01:27 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
Strong wind gusts damaged a fence and blew down many tree branches.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2010Every state in 2010This day in weather historyWarnings in South Dakota, August 2010
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: 248458, 257828.