A severe thunderstorm moved north from Nebraska to the Oglala area in southern Shannon County, producing hail to golf ball size and wind gusts around 70 mph.
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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 moved north from Nebraska to the Oglala area in southern Shannon County, producing hail to golf ball size and wind gusts around 70 mph.
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 Jun 30, 2:05 PM MST, 1 hour 33 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 305 PM MDT THU JUN 30 2011 .DISCUSSION...CURRENT SURFACE ANALYSIS HAS COLD FRONT STRETCHING SOUTHWESTWARD ACROSS EASTERN ND...CENTRAL SD...AND INTO FAR SOUTHWESTERN SD. UPPER LEVEL ANALYSIS SHOWS SOUTHWEST FLOW IN PLACE ACROSS THE ROCKIES AND HIGH PLAINS. STRONG SHORTWAVE AND AREA OF LOW PRESSURE ARE MOVING SLOWLY EAST-NORTHEAST ACROSS EASTERN UT INTO NORTHWESTERN CO. SKIES ARE MOSTLY CLOUDY ACROSS WESTERN AREAS...WITH PARTLY CLOUDY SKIES EAST OF THE BLACK HILLS. TEMPS ARE IN THE 80S ACROSS MOST OF THE AREA...90S TOWARD SOUTH CENTRAL SD. DEWPOINTS ARE IN THE 50S AND 60S...HIGHEST OVER EASTERN PORTIONS OF THE CWA. WINDS ARE NORTHWESTERLY BEHIND THE FRONT...LIGHT WESTERLY ACROSS FAR SOUTHERN SD. REGIONAL RADARS SHOWING SHOWERS AND STORMS DEVELOPING ACROSS EASTERN WY AND THE NEB PANHANDLE. THEY ARE WEAKENING SOME RIGHT NOW AS THEY MOVE INTO A MORE CAPPED ATMOSPHERE TO THE NORTH AND EAST. UNSETTLED WEATHER CAN BE EXPECTED THROUGH FRIDAY MORNING AS SHORTWAVE CROSSES THE REGION. SEASONABLY WARM AND MOSTLY DRY WEATHER IS EXPECTED FOR MUCH OF THE HOLIDAY WEEKEND. ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED SATURDAY INTO SATURDAY NIGHT...WITH SUNDAY AND MUCH OF MONDAY LOOKING MAINLY DRY AT THIS POINT. SHORTWAVE OVER WESTERN CO WILL MOVE NORTHEAST INTO THE CENTRAL PLAINS TONIGHT...BRINGING A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS LATE TODAY...TONIGHT...AND INTO FRIDAY MORNING. THERE IS A SLIGHT RISK FOR SEVERE STORMS ACROSS THE ENTIRE CWA LATE THIS AFTERNOON AND EVENING...AS CAP WEAKENS AND MORE ACTIVITY DEVELOPS. THE BETTER THREAT FOR SEVERE LOOKS TO BE FROM SOUTHWESTERN SD...NORTH AND EASTWARD INTO CENTRAL SD. STRONG WIND GUSTS WILL BE THE BIGGEST THREAT FROM SEVERE STORMS...ESPECIALLY IF A SQUALL LINE DEVELOPS DURING THE EVENING...BUT LARGE HAIL WILL ALSO BE POSSIBLE. BEST INSTABILITY WILL GENERALLY BE IN PLACE SOUTH AND EAST OF THE BLACK HILLS...WITH CAPE VALUES IN THE 1000 TO 1500 J/KG RANGE... LOCALLY HIGHER TOWARD CENTRAL SD. HEAVY RAINFALL IS ALSO LIKELY WITH SOME STORMS...ESPECIALLY FROM THE BLACK HILLS AREA EASTWARD...WHERE PRECIPITABLE WATER VALUES ARE ABOVE AVERAGE. SHORTWAVE WILL MOVE NORTHEAST INTO WESTERN NEB/SOUTHWESTERN SD BY FRIDAY MORNING AND THEN MOVE QUICKLY ACROSS SOUTH CENTRAL AND EASTERN SD DURING THE DAY. SHOWERS AND A FEW STORMS CAN BE EXPECTED ACROSS THE AREA DURING THE MORNING...ESPECIALLY FROM THE BLACK HILLS AREA NORTH AND EASTWARD. SHOWERS WILL BEGIN TO TAPER OFF BY THE AFTERNOON. COOLER TEMPS CAN BE EXPECTED WITH CLOUD COVER AND SHOWERS AROUND...HIGHS IN THE 70S. SKIES WILL CLEAR FRIDAY EVENING WITH LOWS MOSTLY IN THE 50S. ZONAL FLOW ALOFT WILL BE IN PLACE ON SATURDAY. WEAK ENERGY PASSING OVER THE AREA WILL LIKELY PRODUCE ISOLATED TO SCATTERED THUNDERSTORMS... ESPECIALLY IN THE AFTERNOON AND EVENING. A FEW STRONG TO SEVERE STORMS LOOK POSSIBLE ACROSS THE BLACK HILLS AREA. TEMPERATURES WILL BE NEAR AVERAGE...WITH HIGHS IN THE MID 70S TO MID 80S. EXTENDED...AN UPPER LEVEL RIDGE OVER THE NRN PLAINS EARLY NEXT WEEK WILL BRING MAINLY DRY WX ALONG WITH ABOVE AVERAGE TEMPS. THE RIDGE WILL BE A BIT MORE SUPPRESSED TOWARD MIDWEEK...LEADING TO DAILY CHANCES FOR STORMS AND TEMPS NEAR TO SLIGHTLY ABOVE AVERAGE. && .AVIATION... A STRONG UPPER WAVE WILL APPROACH FROM THE WEST AND BRING A GOOD CHANCE FOR SHOWERS AND STORMS TONIGHT INTO FRIDAY MORNING. MVFR TO LOCALIZED IFR CONDITIONS WILL COULD BECOME MORE WIDESPREAD LATER TONIGHT. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 221 PM MDT THU JUN 30 2011 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-011300- 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- 221 PM MDT (321 PM CDT) THU JUN 30 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL DEVELOP ACROSS THE AREA LATE TODAY AND TONIGHT AS AN UPPER LEVEL SYSTEM APPROACHES THE AREA. THERE IS A SLIGHT RISK OF SEVERE STORMS DURING THE LATE AFTERNOON AND EVENING ACROSS NORTHEASTERN WYOMING AND WESTERN AND SOUTH CENTRAL SOUTH DAKOTA. STRONG WIND GUSTS WILL BE THE BIGGEST THREAT FROM ANY SEVERE STORMS...BUT LARGE HAIL IS ALSO POSSIBLE. HEAVY RAINFALL IS ALSO LIKELY WITH SOME STORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED THUNDERSTORMS CAN BE EXPECTED ACROSS THE AREA ON FRIDAY... ESPECIALLY SOUTH AND EAST OF THE BLACK HILLS. SEVERE STORMS ARE NOT EXPECTED AT THIS TIME. THERE WILL BE A CHANCE FOR THUNDERSTORMS ACROSS THE AREA SATURDAY INTO SATURDAY NIGHT. WIDESPREAD SEVERE STORMS ARE NOT EXPECTED AT THIS TIME...BUT A FEW STORMS COULD BE STRONG TO SEVERE...ESPECIALLY ACROSS THE BLACK HILLS AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 419 PM MDT THU JUN 30 2011 WYZ056-057-302300- WESTERN CROOK WY-WYOMING BLACK HILLS WY- 419 PM MDT THU JUN 30 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CROOK AND EXTREME NORTHEASTERN WESTON COUNTIES UNTIL 500 PM MDT... AT 415 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR INYAN KARA MOUNTAIN...OR 13 MILES SOUTH OF SUNDANCE...MOVING NORTHEAST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... SUNDANCE... MOSKEE... WARREN PEAK... BEULAH... THIS INCLUDES INTERSTATE 90 BETWEEN WYOMING MILE MARKERS 177 AND 207... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. CARSTENS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 420 PM MDT THU JUN 30 2011 WYZ054-302300- NORTHERN CAMBELL WY- 420 PM MDT THU JUN 30 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CAMPBELL COUNTY UNTIL 500 PM MDT... AT 419 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9 MILES EAST OF ECHETA...OR 16 MILES NORTHWEST OF DOWNTOWN GILLETTE...MOVING NORTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... WESTON... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. CARSTENS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 435 PM MDT THU JUN 30 2011 SDZ024-025-WYZ057-302300- NORTHERN BLACK HILLS SD-NORTHERN FOOT HILLS SD-WYOMING BLACK HILLS WY- 435 PM MDT THU JUN 30 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CROOK...EXTREME NORTHEASTERN WESTON AND LAWRENCE COUNTIES UNTIL 500 PM MDT... AT 432 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR O'NEIL PASS...OR 17 MILES SOUTHWEST OF DEADWOOD...MOVING NORTHEAST AT 40 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... DOWNTOWN SPEARFISH... DEADWOOD... CHEYENNE CROSSING... TERRY PEAK... LEAD... CENTRAL CITY... BROWNSVILLE... GALENA... THIS INCLUDES INTERSTATE 90 BETWEEN SOUTH DAKOTA MILE MARKERS 9 AND 20... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. CARSTENS
The Rapid City radar (KUDX), 105 km away, was scanning. The volume nearest the first event began at 22:37 UTC.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
Six to eight inch diameter tree branches were snapped off trees.
Large hail damaged several automobiles.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2011Every state in 2011This day in weather historyWarnings in South Dakota, June 2011
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: 309857, 309856, 309858.