A thunderstorm produced wind gusts to 60 mph near Interior.
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 episode as NWS UNR wrote it up.
A thunderstorm produced wind gusts to 60 mph near Interior.
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 13, 12:22 PM MST, 5 hours 58 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 122 PM MDT THU AUG 13 2009 .DISCUSSION...CURRENT WATER VAPOR SHOWS SHORTWAVE MOVING ACROSS CENTRAL WYOMING THIS AFTERNOON. EXPECT THIS WAVE TO MOVE ACROSS WESTERN SOUTH DAKOTA LATE THIS AFTERNOON. ISOLATED THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE BLACK HILLS AND NORTHEAST WYOMING LATE THIS AFTERNOON AND LINGER INTO THIS EVENING AS A SECONDARY WAVE MOVES ACROSS THE CWA. A MORE VIGOROUS WAVE WILL APPROACH THE CWA LATE TONIGHT AND MOVE ACROSS THE CWA DURING THE DAY ON FRIDAY. WITH THE LLJ INCREASING TONIGHT ALONG WITH VERY STEEP LAPS RATES AND LIFT FROM APPROACHING WAVE...EXPECT SHOWERS AND THUNDERSTORMS TO DEVELOP TONIGHT ACROSS SOUTHWEST AND SOUTH CENTRAL SOUTH DAKOTA. FRIDAY...EXPECT SHOWERS AND THUNDERSTORMS TO CONTINUE INTO THE EARLY MORNING HOURS AS WAVE MOVES INTO THE CWA. CAPE WILL INCREASE TOMORROW ACROSS SOUTH CENTRAL SOUTH DAKOTA. MOISTURE ALOFT WILL STREAM INTO THE CWA AHEAD OF TROUGH SWINGING THROUGH THE NORTHWEST CONUS. PRECIPITABLE WATER VALUES ARE EXPECTED TO INCREASE TO AROUND 150 PERCENT OF NORMAL TOMORROW AFTERNOON. WITH SLOW STORM MOTION EXPECTED...A FEW STORMS MAY PRODUCT HEAVY RAIN ALONG WITH HAIL AND GUSTY WINDS. SATURDAY...UPPER TROUGH WILL APPROACH THE CWA ON SATURDAY. A COLD FRONT WILL MEANDER ACROSS THE CWA IN THE AFTERNOON AS TROUGH APPROACHES THE AREA. EXPECT SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS MOST OF THE CWA. GIVEN FORECAST CAPE VALUES ACROSS WESTERN SOUTH DAKOTA OF 1000 TO 2000 J/KG A FEW OF THE THUNDERSTORMS MAY BECOME SEVERE. GIVEN THE SLOW MOVEMENT OF THE FRONT AND RELATIVELY WEAK SHEAR...A FEW OF THE STORMS COULD PRODUCE HEAVY RAINFALL ACROSS WESTERN SOUTH DAKOTA SATURDAY AFTERNOON INTO SATURDAY EVENING. EXTENDED...PCPN CHANCES WILL DECREASE ON SUNDAY AS DRY AND COOL NORTHWEST FLOW FILTERS INTO THE NRN PLAINS BEHIND DEPARTING UPR TROF. ONLY SMALL CHANCES FOR PCPN ARE EXPECTED THROUGH THE MIDDLE OF NEXT WEEK WITH NW FLOW KEEPING TEMPS NEAR OR BELOW AVERAGE. && .AVIATION...ISOLATED TSTMS ARE POSSIBLE THIS AFTN THROUGH THIS EVE AND OVERNIGHT WITH LCL MVFR CONDITIONS. OTHERWISE VFR CONDITIONS WILL PREVAIL NEXT 24 HOURS. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 244 PM MDT THU AUG 13 2009 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-141300- 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- 244 PM MDT (344 PM CDT) THU AUG 13 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING FROM NORTHEAST WYOMING INTO SOUTH CENTRAL SOUTH DAKOTA. THERE IS A CHANCE OF THUNDERSTORMS OVERNIGHT FROM THE BLACK HILLS INTO SOUTH CENTRAL SOUTH DAKOTA. SEVERE THUNDERSTORMS ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE WILL BE A CHANCE OF THUNDERSTORMS ACROSS THE AREA FRIDAY THROUGH SUNDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HOWEVER ISOLATED SEVERE WEATHER WILL BE POSSIBLE SATURDAY AFTERNOON AND EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 459 PM MDT THU AUG 13 2009 SDZ031-042-140000- PENNINGTON CO PLAINS-SHANNON- INCLUDING THE CITIES OF...ROCKYFORD 459 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING THE SOUTHERN BADLANDS... AT 457 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH WIND GUSTS TO 50 MPH AND OCCASIONAL CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 11 MILES WEST OF ROCKYFORD...OR 35 MILES NORTH OF PINE RIDGE...AND WAS MOVING NORTHEAST AT 10 MPH. THE THUNDERSTORM WILL BE NEAR... ROCKYFORD AROUND 535 PM MDT... THE SOUTHERN BADLANDS THROUGH 525 PM MDT... BUNKERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 544 PM MDT THU AUG 13 2009 SDZ042-140045- SHANNON- INCLUDING THE CITIES OF...ROCKYFORD 544 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING ROCKYFORD... AT 542 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH NICKEL SIZED HAIL...WIND GUSTS TO 50 MPH...LOCALLY HEAVY RAINFALL...AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS CENTERED 5 MILES WEST OF ROCKYFORD...OR 31 MILES NORTH OF PINE RIDGE...AND WAS MOVING NORTHEAST AT 10 MPH. THE THUNDERSTORM WILL BE NEAR... ROCKYFORD AROUND 605 PM MDT... BUNKERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 549 PM MDT THU AUG 13 2009 SDZ031-042-043-140045- JACKSON-PENNINGTON CO PLAINS-SHANNON- INCLUDING THE CITIES OF...POTATO CREEK 549 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING THE POTATO CREEK AREA... AT 548 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH NICKEL SIZED HAIL...WIND GUSTS TO 45 MPH...AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 10 MILES WEST OF POTATO CREEK...OR 34 MILES NORTHWEST OF MARTIN...AND WAS MOVING EAST AT 15 MPH. THE THUNDERSTORM WILL BE NEAR... POTATO CREEK AROUND 630 PM MDT... BUNKERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 609 PM MDT THU AUG 13 2009 SDZ042-140115- SHANNON- INCLUDING THE CITIES OF...KYLE...ROCKYFORD AND SHARPS CORNER 609 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING ROCKYFORD AND SHARPS CORNER... AT 608 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH NICKEL SIZED HAIL...WIND GUSTS TO 40 MPH...LOCALLY HEAVY RAINFALL...AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 5 MILES SOUTH OF ROCKYFORD...OR 28 MILES NORTH OF PINE RIDGE...AND WAS MOVING NORTHEAST AT 15 MPH. THE THUNDERSTORM WILL BE NEAR... ROCKYFORD AROUND 615 PM MDT... SHARPS CORNER AROUND 620 PM MDT... KYLE AROUND 710 PM MDT... BUNKERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 642 PM MDT THU AUG 13 2009 SDZ043-140145- JACKSON- INCLUDING THE CITIES OF...POTATO CREEK AND WANBLEE 642 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING THE AREA... AT 642 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH PENNY SIZED HAIL...LOCALLY HEAVY RAINFALL...AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 6 MILES EAST OF POTATO CREEK...OR 25 MILES NORTH OF MARTIN...AND WAS MOVING EAST AT 15 MPH. THE THUNDERSTORM WILL BE NEAR... WANBLEE AROUND 725 PM MDT... BUNKERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 706 PM MDT THU AUG 13 2009 WYZ054-140200- NORTHERN CAMPBELL- INCLUDING THE CITIES OF...RECLUSE 706 PM MDT THU AUG 13 2009 ...STRONG THUNDERSTORM APPROACHING THE AREA... AT 705 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH WIND GUSTS TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 14 MILES NORTHWEST OF RECLUSE...OR 45 MILES NORTHWEST OF DOWNTOWN GILLETTE...AND WAS MOVING EAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... AREAS NORTH OF SPOTTED HORSE... AREAS NORTH OF RECLUSE... BUNKERS
The Rapid City radar (KUDX), 88 km away, was scanning. The volume nearest the first event began at 01:19 UTC.
1 thunderstorm wind. Local standard time, as filed.
Large tree branches were blown down and tents were tipped over at a campground.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2009Every state in 2009This day in weather historyWarnings in South Dakota, August 2009
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: 186274.