Thunderstorm Wind, Fall River
- When
- August 3, 5:55 PM MST
- Where
- Fall River County, 15 mi W of Ardmore
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 43.020, -103.967
Small branches were broken off trees.
Damaging Winds in South Dakota, August 3, 2009
Wind gusts to 70 mph accompanied a severe thunderstorm that moved across Fall River County.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $30,000
- Crop damage
- None recorded
- Events
- 5
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.
What happened
The episode as NWS UNR wrote it up.
Wind gusts to 70 mph accompanied a severe thunderstorm that moved across Fall River County.
What forecasters said that day
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 3, 1:06 PM MST, 4 hours 49 minutes earlier.
Area forecast discussion, Aug 3, 1:06 PM MST, 4 hours 49 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 206 PM MDT MON AUG 3 2009 .DISCUSSION...19Z SURFACE ANALYSIS HAS LOW PRESSURE OVER NORTHERN MINNESOTA WITH COLD FRONT EXTENDING BACK INTO SOUTHEAST MONTANA. TEMPERATURES ARE CURRENTLY IN THE 80S WITH WINDS OUT OF THE NORTHWEST ACROSS NORTHEAST WYOMING AND NORTHWEST SOUTH DAKOTA...AND OUT OF THE SOUTH ACROSS THE REMAINDER OF THE SOUTH DAKOTA PLAINS. UPPER LEVEL ANALYSIS HAS NEAR ZONAL FLOW ACROSS THE NORTHWEST AND NORTH CENTRAL CONUS WITH A COUPLE OF EMBEDDED SHORTWAVES. WEAK SHORTWAVE PRODUCING SOME SHOWERS ACROSS SOUTH CENTRAL SOUTH DAKOTA ATTM...AND NEXT SHORTWAVE TO AFFECT THE AREA JUST REACHING THE BIGHORN MOUNTAINS. SHORTWAVE MOVING ACROSS THE BIGHORNS WILL SLIDE THROUGH THE AREA LATE THIS AFTERNOON AND OVERNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED. WITH CLOUD BASES 10K FT+ AND MODEST INSTABILITY/SHEAR...COULD BE SOME MARGINALLY SEVERE STORMS WITH VERY STRONG WINDS AND SOME HAIL. LOW TEMPERATURES EXPECTED TO BE MAINLY IN THE 50S. TUESDAY...CANADIAN HIGH PRESSURE WILL PUSH INTO THE NORTHERN PLAINS AS SURFACE LOW DEVELOPS OVER THE NORTHERN ROCKIES. RESIDUAL FRONTAL BOUNDARY WILL PROVIDE FOCUS FOR SHOWERS AND STORMS ON TUESDAY. INSTABILITY/SHEAR GOOD ENOUGH FOR STRONGER STORMS ACROSS NORTHEAST WYOMING AND SOUTHWESTERN SOUTH DAKOTA. HIGH TEMPERATURES WILL BE CLOSE TO TODAY. WEDNESDAY...ANOTHER SHORTWAVE WILL CROSS THE NORTHERN PLAINS...A SIMILAR SETUP TO TUESDAY...AND RESULT IN ANOTHER CHANCE FOR STRONG STORMS. HIGHS MOSTLY IN THE 80S. EXTENDED...AXIS OF UPPER LEVEL RIDGE SHIFTS EAST AS UPPER TROF PUSHES INTO THE FAR WESTERN CONUS FOR THE END OF THE WORK WEEK. A SERIES OF UPPER LEVEL DISTURBANCES WILL PUSH THROUGH THE FLOW BRINGING CHANCES FOR THUNDERSTORMS THURSDAY THRU SATURDAY. DRY WX IS EXPECTED SUNDAY AND MONDAY. TEMPS WILL REMAIN NEAR OR SLIGHTLY ABV SEASONAL AVERAGES. && .AVIATION...SCT TSTMS WILL BE POSSIBLE THRU 02Z WITH MVFR CIGS/ VSBYS POSSIBLE IN AND NEAR ANY TSTMS. VFR CONDS ARE EXPECTED AFT 02Z. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
Hazardous weather outlook, Aug 3, 10:24 AM MST, 7 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 1124 AM MDT MON AUG 3 2009 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-041300- 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- 1124 AM MDT (1224 PM CDT) MON AUG 3 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT A COLD FRONT WILL MOVE INTO THE AREA LATE THIS AFTERNOON AND EVENING...BRINGING A SLIGHT CHANCE OF THUNDERSTORMS TO THE REGION. THERE WILL BE A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE AREA THIS AFTERNOON AND EVENING...WITH DAMAGING WINDS AND HAIL BEING THE PRIMARY CONCERN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS BOTH TUESDAY AND WEDNESDAY AFTERNOON AND EVENING. THERE IS A SLIGHT RISK OF SEVERE STORMS TUESDAY AFTERNOON AND EVENING MAINLY OVER NORTHEAST WYOMING...THE BLACK HILLS...AND SOUTHWEST SOUTH DAKOTA. ON WEDNESDAY...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER ALL OF NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA. THE PRIMARY THREATS BOTH DAYS ARE LARGE HAIL AND DAMAGING WINDS. THERE IS A NEARLY DAILY CHANCE OF THUNDERSTORMS THE REST OF THIS WEEK...ALTHOUGH THE CHANCE FOR SEVERE STORMS IS UNCERTAIN AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
In the hours before
Special weather statement, Aug 3, 4:09 PM MST, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 509 PM MDT MON AUG 3 2009 WYZ055-058-040015- SOUTHERN CAMPBELL-WESTON- INCLUDING THE CITIES OF...PINE TREE JUNCTION...RENO JUNCTION... ROCHELLE AND SAVAGETON 509 PM MDT MON AUG 3 2009 ...STRONG THUNDERSTORM APPROACHING THE AREA... AT 508 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH WIND GUSTS TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 6 MILES NORTHEAST OF PINE TREE JUNCTION...OR 11 MILES SOUTHWEST OF WRIGHT...AND WAS MOVING EAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... WRIGHT AND RENO JUNCTION... ROCHELLE... HELGESON
Special weather statement, Aug 3, 4:31 PM MST, 1 hour 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 531 PM MDT MON AUG 3 2009 SDZ032-043-040030- HAAKON-JACKSON- INCLUDING THE CITIES OF...BELVIDERE...BILLSBURG... CACTUS FLAT AND COTTONWOOD 531 PM MDT MON AUG 3 2009 ...STRONG THUNDERSTORM APPROACHING THE AREA... AT 531 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH WIND GUSTS TO 40 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 4 MILES EAST OF BILLSBURG...OR 23 MILES NORTH OF PHILIP...AND WAS MOVING SOUTHEAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... GRINDSTONE... OTTUMWA... PHILIP AND COTTONWOOD... MINUTEMAN MISSILE SITE... MIDLAND AND CACTUS FLAT... BELVIDERE... THIS INCLUDES INTERSTATE 90 BETWEEN SOUTH DAKOTA MILE MARKERS 125 AND 174... HELGESON
Special weather statement, Aug 3, 4:44 PM MST, 1 hour 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 544 PM MDT MON AUG 3 2009 WYZ055-058-040045- SOUTHERN CAMPBELL-WESTON- INCLUDING THE CITIES OF...CLARETON...DOWNTOWN NEWCASTLE... MORRISEY AND ROCHELLE 544 PM MDT MON AUG 3 2009 ...STRONG THUNDERSTORM APPROACHING THE AREA... AT 544 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM WITH WIND GUSTS TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING. THIS STORM WAS LOCATED 12 MILES NORTHWEST OF ROCHELLE...OR 18 MILES EAST OF WRIGHT...AND WAS MOVING EAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... ROCHELLE... CLARETON... MORRISEY... HELGESON
Special weather statement, Aug 3, 5:35 PM MST, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 635 PM MDT MON AUG 3 2009 SDZ027-029-030-041-042-074-WYZ058-040200- CUSTER CO PLAINS-FALL RIVER-HERMOSA FOOT HILLS-SHANNON- SOUTHERN BLACK HILLS-SOUTHERN FOOT HILLS-WESTON- INCLUDING THE CITIES OF...ANGOSTURA RESERVOIR...ARDMORE... ARGYLE AND BLUE BELL 635 PM MDT MON AUG 3 2009 ...STRONG THUNDERSTORMS APPROACHING THE AREA... AT 634 PM MDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS WITH WIND GUSTS TO 50 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTH OF MORRISEY TO 44 MILES SOUTHWEST OF ARDMORE...AND WERE MOVING EAST AT 45 MPH. LOCATIONS IMPACTED INCLUDE... DEWEY... JEWEL CAVE... EDGEMONT AND PROVO... RUMFORD... DOWNTOWN CUSTER...CRAZY HORSE MEMORIAL...ARGYLE AND ARDMORE... PRINGLE... HELGESON
The radar
The Rapid City radar (KUDX), 153 km away, was scanning. The volume nearest the first event began at 00:53 UTC.
Event by event
5 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Fall River
- When
- August 3, 6:05 PM MST
- Where
- Fall River County, Edgemont
- Measured
- 52 kt (60 mph) estimated gust
- Property damage
- $30,000
- Reported by
- Trained Spotter
- Coordinates
- 43.300, -103.830
Strong wind gusts blew out the doors of an airport hanger and two small planes in the hangar received minor damage.
Thunderstorm Wind, Fall River
- When
- August 3, 6:05 PM MST
- Where
- Fall River County, 10 mi NE of Edgemont
- Measured
- 51 kt (59 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 43.402, -103.689
Thunderstorm Wind, Fall River
- When
- August 3, 6:45 PM MST
- Where
- Fall River County, 12 mi S of Oelrichs
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 43.026, -103.150
Wind gusts were estimated around 70 mph.
Thunderstorm Wind, Fall River
- When
- August 3, 7:05 PM MST
- Where
- Fall River County, Oelrichs
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 43.200, -103.150
Wind gusts were estimated around 70 mph.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Rip Currents in New York, August 3, 2009
- Hail and Damaging Winds in South Dakota, August 3, 2009
- Wildfire in Alaska, August 3 to 16, 2009
- Flash Flooding in Georgia, August 3, 2009
- Damaging Wind in Wisconsin, August 3, 2009
- Hail and Damaging Winds in Nebraska, August 3 to 4, 2009
- Damaging Wind in Georgia, August 3, 2009
- Lightning Strikes in Wisconsin, August 3, 2009
- Hail in Kansas, August 3, 2009
- Hail and Damaging Winds in South Dakota, August 3, 2009
- Hail and Damaging Wind in South Dakota, August 3, 2009
- Hail and Damaging Winds in Minnesota, August 3, 2009
More
Every storm in South Dakota in 2009Every state in 2009This day in weather historyWarnings in South Dakota, August 2009
Sources
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: 178924, 178927, 178930, 178928, 178931.