Strong northwest winds developed across parts of western South Dakota behind a cold frontal passage.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Strong northwest winds developed across parts of western South Dakota behind a cold frontal passage.
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 Mar 29, 3:15 AM MST, 5 hours 45 minutes earlier.
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
415 AM MDT THU MAR 29 2007
.DISCUSSION...AT 09Z SFC MAP SHOWS DEEP LOW PRES IN WRN KANSAS
WITH SFC TROF EXTENDING NORTH INTO CENTRAL SD. HIGH PRES IS
LOCATED ACRS WEST-CENTRAL MT. STRONG PRES GRADIENT BETWEEN
THESE TWO SYSTEMS IS PRODUCING STRONG NW WINDS ACRS WRN SD AND
NERN WY.
FOR TODAY AND TONIGHT...STRONG UPPER LOW IN SWRN COLORADO WILL
MOVE SLOWLY NORTHEAST INTO CENTRAL WYONMING ON FRIDAY. AS THIS
SYS MOVES NE...STRONG S/W WILL ROTATE ARD SYSTEM ACRS FA. THIS
ALONG WITH STRONG DIFLUENCE...STRONG INFLUX OF MOISTER AND GOOD
UPSLOPE FLOW WILL PRODUCE A PROLONGED PERIOD OF RAIN/SNOW ACRS
NERN WY AND WRN SD. TEMPS WILL BE COLD ENOUGH FOR SNOW ACRS NERN
WY/BLK HLS/SWRN SD AND NWRN SD. ANY RAIN SHOULD ALSO CHANGE
QUICKLY TO SNOW ACRS THE ERN FOOTHILLS.
WILL CONT WITH WSW ACRS NERN WY...ALREAD 5-8 INCHES IN CAMPBELL
COUNTY WHERE SOME AREAS COULD END UP WITH UP TO 18 INCHES OF SNOW
BY FRIDAY AM. LOOKS LIKE 5-10 WILL FALL ACRS NRN/CENTRAL BLK HLS
AND NWRN SD AND HAVE ISSUED A WINTER STORM WARNING IN THESE AREAS.
LIGHTER AMOUNTS CAN BE EXPECTED ACRS SWRN SD/ERN FTHLS AND IN
PERKINS AND MEADE COUNTIES...WHERE WINTER WEATHER ADVISORY HAS BEEN
ISSUED. ELSEWHERE IN WRN SD EXPECTED MAINLY RAIN...WITH SOME TSTMS
POSSIBLE IN SOUTH CENTRAL SD.
STRONG NW WINDS WILL ALSO BE A PROBLEM AS STRONG SFC HIGH IN WEST
CENTRAL MT COMBINES WITH A STRONG SFC LOW IN WRN KANSAS AND ASSCD
SFC TROF EXTENDING NORTH INTO CENTRAL SD TO PRODUCE A TIGHT PRESS
GRADIENT. HAVE ISSUED A HIGH WIND WARNING FOR PENNINGTON COUNTY
PLAINS AND WIND ADVISORY FOR CUSTER COUNTY PLAINS AND HAAKON AND
ZIEBACH COUNTIES.
ON FRIDAY UPPER LOW WILL BE IN CENTRAL WY BRINGING A COOL AND WINDY
DAY WITH A CHC OF SCT RAIN/SNOW SHOWERS. TEMPS WILL BE WELL BELOW
NORMAL AGAIN...A RARITY OVER PAST 3 WEEKS.
A MORE ZONAL FLOW WILL DOMINATE THE WEATHER ON SAT/SUN AS UPPER SYS
MOVES TO EAST AND FILLS. UPPER AIR TEMPS WILL BE MORE SEASONAL AND
EXPECT TEMPS IN 40S TO LOWER 50S...WHICH IS NEAR SEASONAL NORMS.
HAVE A DRY FORECAST FOR BOTH DAYS AT THIS TIME.
EXTENDED...LATEST GFS SHOWING A SHORTWAVE APPROACHING THE AREA
SUNDAY IN NEAR ZONAL UPPER FLOW ACROSS THE REGION. THIS COULD BRING
SOME SHOWERS TO THE AREA SUNDAY AND SUNDAY NIGHT...SO HAVE ADDED SL
CHANCE POPS TO FAR WESTERN ZONES INCLUDING BLACK HILLS. NEXT UPPER
TROUGH DEEPENS ACROSS THE PACIFIC NORTHWEST WITH UPPER FLOW BECOMING
MORE SOUTHWESTERLY MONDAY. ANOTHER SHORTWAVE IS PROGGED TO AFFECT
THE AREA MONDAY FOLLOWED BY THE MAIN TROUGH MOVING THROUGH TUESDAY.
THIS PATTERN WILL KEEP UNSETTLED WEATHER ACROSS THE AREA. GENERALLY
SEASONAL TEMPS ARE ALSO EXPECTED EARLY NEXT WEEK.
&&
.AVIATION...CIGS WILL CONTINUE TO FLUCTUATE TODAY BETWEEN IFR AND
BARELY VFR CONDITIONS. SNOW WILL CONTINUE ACROSS WESTERN TWEB
ROUTES...AND ELSEWHERE ACROSS WESTERN SD RAIN WILL SLOWLY CHANGE TO
SNOW TODAY INTO TONIGHT.
&&
.UNR WATCHES/WARNINGS/ADVISORIES...
SD...WINTER WEATHER ADVISORY THROUGH 12Z FRIDAY FOR SOUTHWESTERN
SOUTH DAKOTA...THE EASTERN FOOTHILLS...MEADE AND PERKINS
COUNTIES...
...WINTER STORM WARNING THROUGH 12Z FRIDAY FOR THE NORTHERN AND
CENTRAL BLACK HILLS...NORTHERN FOOTHILLS AND NORTHWESTERN
SOUTH DAKOTA...
...HIGH WIND WARNING TODAY FOR THE PENNIGTON COUNTY PLAINS...
...WIND ADVISORY TODAY FOR HAAKON AND ZIEBACH COUNTIES AND THE
CUSTER COUNTY PLAINS...
WY...WINTER STORM WARNING THROUGH 12Z FRIDAY FOR NORTHEASTERN
WYOMING INCLUDING THE BEAR LODGE MOUNTAINS...
&&HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 605 AM MDT THU MAR 29 2007 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-301300- 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- 605 AM MDT (705 AM CDT) THU MAR 29 2007 ...WINTER STORM WARNING THROUGH 600AM MST FRIDAY FOR NORTHEASTERN WYOMING INCLUDING THE BEAR LODGE MOUNTAINS... ...WINTER STORM WARNING THROUGH 600AM MST FRIDAY FOR THE NORTHERN AND CENTRAL BLACK HILLS...NORTHERN FOOTHILLS AND NORTHWESTERN SOUTH DAKOTA... ...WINTER WEATHER ADVISORY THROUGH 600AM MST FRIDAY FOR THE EASTERN FOOTHILLS...SOUTHWESTERN SOUTH DAKOTA AND MEADE AND PERKINS COUNTIES... ...HIGH WIND WARNING FOR TODAY FOR THE PENNINGTON COUNTY PLAINS... ...WIND ADVISORY FOR TODAY FOR HAAKON AND ZIEBACH COUNTIES AND THE CUSTER COUNTY PLAINS... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT AN UPPER LEVEL STORM SYSTEM APPROACHING THE AREA WILL BRING STRONG WINDS...RAIN AND SNOW TO THE REGION TODAY AND TONIGHT. NORTHWEST WINDS OF 30 TO 45 MPH CAN BE EXPECTED THIS MORNING AND AFTERNOON ACROSS THE PLAINS OF WESTERN SOUTH DAKOTA. IN NORTHEASTERN WYOMING AND THE BLACK HILLS WINDS OF 25 OT 35 MPH ARE EXPECTED. MUCH COLDER AIR WILL CONTINUE TO PUSH INTO NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA TODAY. A WINTER STORM WARNING HAS BEEN ISSUED FOR TODAY AND TONIGHT IN NORTHEASTERN WYOMING AND FAR WESTERN SOUTH DAKOTA...INCLUDING THE BLACK HILLS. SNOW ACCUMULATIONS IN EXCESS OF A FOOT ARE POSSIBLE IN NORTHEASTERN WYOMING...WITH 6 OR MORE INCHES POSSIBLE ACROSS FAR WESTERN SOUTH DAKOTA. IN THE EASTERN FOOTHILLS A WINTER WEATHER ADVISORY HAS BEEN ISSUED FOR 3 TO 6 INCHES OF SNOW. THE STRONG NORTHWEST WINDS WILL ALSO CREATE BLOWING AND DRIFTING SNOW WHERE HEAVY SNOW FALLS. THIS WILL BE ESPECIALLY TRUE IN CAMPBELL COUNTY IN NORTHEASTERN WYOMING WHERE 4 TO 8 INCHES OF SNOW HAD ALREADY FALLEN BY THIS MORNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS 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.
1 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, March 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: 21630.