A strong cold front moved through the area, bringing gusty winds to the South Dakota plains during the early morning hours. The strongest winds were in the Rapid City area, where wind gusts reached 60 mph for a brief time.
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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 strong cold front moved through the area, bringing gusty winds to the South Dakota plains during the early morning hours. The strongest winds were in the Rapid City area, where wind gusts reached 60 mph for a brief time.
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 Sep 20, 9:50 PM MST, 3 hours 10 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 1050 PM MDT THU SEP 20 2007 .DISCUSSION...CURRENT SURFACE ANALYSIS SHOWS COLD FRONT PUSHING THROUGH SOUTHEASTERN MONTANA. HAVE INCREASED WINDS OVER NIGHT ACROSS CWA TO ACCOUNT FOR FRONTAL PASSAGE AND DECENT COLD AIR ADVECTION BEHIND THE FRONT. HAVE HELD OFF ON ADVISORY AT THIS TIME AS IT LOOKS LIKE WINDS WILL BE JUST SHY OF CRITERIA WITH A SHORT PERIOD OF STRONG WINDS AS THE FRONT PUSHES ACROSS THE AREA. ALSO HAVE COOLED TEMPERATURES DOWN A FEW DEGREES OVER THE BLACK HILLS GIVEN THE COOLER NAM 850 TEMPS. HAVE ONLY MADE MINOR ADJUSTMENTS TO THE REST OF FORECAST. && .AVIATION...CLOUDS WILL INCREASE SOME OVERNIGHT AND WINDS WILL BECOME GUSTY AS THE COLD FRONT PASSES ACROSS THE AREA. BRIEF AREAS OF MVFR CIGS POSSIBLE ALONG TWB RTE 259 AFT 08Z. ALSO EXPECT SFC WNDS 20G30KT ACROSS THE REST OF THE RTES AFT 08Z. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 1023 AM MDT THU SEP 20 2007 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-211300- 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- 1023 AM MDT (1123 AM CDT) THU SEP 20 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS SUNDAY AND MONDAY. SEVERE WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
The national radar mosaic for the moment the first event began.
3 high wind. Local standard time, as filed.
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 historyWarnings in South Dakota, September 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: 57224, 57225, 57226.