1 tornado, as filed by the National Weather Service.
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 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 14, 1:00 PM MST, 0 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 200 PM MDT TUE SEP 14 2004 .DISCUSSION...VIGOROUS SHORT WAVE IS MOVG THRU WY ATTM PER WATER VAPOR IMAGERY AND CONVECTION IS RAPIDLY FIRING ACRS NERN WY. A SFC LOW IS DEEPENING OVR NERN WY IN RESPONSE TO SHORT WAVE AND IS HELPING AID IN CONVECTIVE DEVELOPMENT. SHEAR PROFILES ARE MORE THAN SUFFICIENT FOR ROTATING UPDRAFTS ESPECIALLY FROM NERN WY THRU THE BLACK HILLS AND INTO SWRN SD. GIVEN COLD AIR ALOFT WITH UPR SYSTEM WILL NEED TO MONITOR FOR SVR WX AND POSSIBLE TORNADO THREAT. TONIGHT...CONVECTION WILL BECOME MORE WDSPRD THIS EVE AS STRONG SHORT WAVE MOVES THRU. HAVE GONE LIKELY POPS MAJORITY OF CWFA. SVR WX THREAT SHOULD BE LIMITED TO THIS EVE ACRS WRN AND SWRN PORTIONS OF THE CWFA...ALSO BEST DYNAMICS FOR SVR WX SHOULD REMAIN A BIT SOUTH OF CWFA. GIVEN LO LVL SHEAR PROFILES...A FEW TORNADOES ARE POSSIBLE ACRS THE WRN/SWRN CWFA. WINDS WILL SLOWLY SHIFT TO THE NW FROM WEST TO EAST AS SFC LOW WORKS ACRS CWFA. WED...SHORT WAVE TROF WILL EXIT THE CWFA WITH ONLY A FEW LINGERING MRNG -SHRA ACRS THE ERN CWFA. SUBSIDENCE IN WAKE OF TROF WILL BRING DECREASING CLOUDS AND COOL W/NW WINDS. THU-FRI...ZONAL FLOW ALOFT WITH ONLY A FEW MINOR DISTURBANCES MOVG THRU THE NRN PLAINS. CONSENSUS IS TO LEAVE FCST DRY AS FORCING WILL BE WEAK AND MOISTURE LIMITED. TEMPS SHOULD BE NEAR THE HIGH END OF GUIDANCE GIVEN WEAK WLY BL FLOW. EXTENDED...DEEPENING TROF ACRS THE WRN CONUS WILL LEAD TO AMPLIFIED RIDGE THRU THE NRN PLAINS EARLY IN THE PD. THIS WILL LEAD TO DRY WX AND WARMING TEMPS. PCPN CHANCES WILL INCREASE BY LATE IN THE WEEKEND AS UPR TROF NEARS THE NRN PLAINS. OPS GFS IS A LITTLE FASTER THAN ENSEMBLE CONSENSUS WITH THIS TROF...AND THIS SLOW DOWN HAS BEEN REFLECTED IN THE FCST. && .UNR...WATCHES/WARNINGS/ADVISORIES... .SD...NONE. .WY...NONE. JOHNSON
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 600 AM MDT TUE SEP 14 2004 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-151300- 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- 600 AM MDT (700 AM CDT) TUE SEP 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS ARE LIKELY ACROSS NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS SUNDAY AND MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
The Rapid City radar (KUDX), 169 km away, was scanning. The volume nearest the first event began at 19:59 UTC.
1 tornado. Local standard time, as filed.
Several reports of a weak tornado on the ground between 1300 and 1310 LST. The tornado remained over open areas and caused no damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2004Every state in 2004This day in weather historyThe tornado archive for Wyoming, 2004Warnings in Wyoming, September 2004
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: 5422446.