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 Aberdeen, SD wrote its last area forecast discussion before the first event at Aug 12, 3:14 PM CST, 2 hours 56 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
414 PM CDT SAT AUG 12 2006
.SHORT TERM...TONIGHT THROUGH TUESDAY NIGHT
FORECAST CHALLENGE IS SEVERE POTENTIAL TONIGHT AND HEAVY RAIN
THREAT TONIGHT AND THE FIRST HALF OF SUNDAY.
PRESENTLY HAVE SEVERE CONVECTION GOING UP IN THE FA ALONG AND
AHEAD OF A SLOW MOVING COLD FRONT. A SEVERE WATCH AND TORNADO
WATCH COVER ALL OF THE FA EXCEPT FOR THE NORTH CENTRAL SODAK
ZONES. PLENTIFUL LOW LEVEL MOISTURE IN COMBINATION WITH HIGH-END
SHEAR AND INSTABILITY VALUES WILL CONTINUE A LARGE HAIL/ISOLATED
TORNADO THREAT ACROSS THE FA WELL INTO THE EVENING.
THE 12Z SOLUTIONS CONTINUE TO ADVERTISE WHAT HAS BEEN THE THEME
FOR A FEW DAYS NOW...LOTS OF RAIN THROUGH THE FIRST HALF OF
SUNDAY. BOTH SOLUTIONS HAVE SLOWED THE EXITING OF THE COLD FRONT
TO BETWEEN 21Z AND 00Z SUNDAY EVENING. STRONG 03 AND 06 HOURLY
PRESSURE TENDENCIES ON THE BACKSIDE OF THE DEPARTING COLD FRONT
ONCE IT BEGINS TO PICK UP STEAM SUNDAY...SO EXPECTING SOME
FORMIDABLE WINDS BEHIND THE SYSTEM SUNDAY AFTERNOON AND EVENING
ACROSS THE FA. MAY NEED A HIGHLIGHT OF SOME SORT RELATED TO THE
WINDS. BOTH MODELS SHOWING THIS FIRST ROUND OF PRECIP WRAPPING UP
AFTER 06Z TONIGHT AS THE FIRST SIGNIFICANT MONSOONAL S/W WAVE TROF
PASSES NORTH INTO CANADA...BUT THEN HIGHLIGHT A SECOND S/W TROF
MOVING THROUGH BETWEEN 09Z AND 18Z ON SUNDAY. EXPECTING MORE
THUNDER SUNDAY...MAINLY IN AND EAST OF THE JAMES RIVER VALLEY.
THEN QUIET WEATHER DAYS UNDER HIGH PRESSURE FROM SUNDAY NIGHT
THROUGH THE FIRST OF TUESDAY. WAA AND RETURN FLOW SET UP LATE
TUESDAY NIGHT...AND INSERTED A SLT CHANCE POP TO MATCH UP WITH UNR
AND BIS ACROSS NORTH CENTRAL SODAK.
NO NEED TO CHANGE ANYTHING IN THE TEMPERATURE FORECAST...AS LATEST
MODEL GUIDANCE CONTINUES TO SUPPORT THE GOING FORECAST.
.LONG TERM...WEDNESDAY THROUGH SATURDAY
FLOW BECOMES SWRLY ALOFT DURING THE EXTENDED FORECAST PERIOD WITH
UNSETTLED WEATHER DEVELOPING. MODELS STILL ON TRACK WITH BRINGING A
LOW PRESSURE INTO THE DAKOTAS BY THURSDAY AND INTO FRIDAY. PREVIOUS
WX/POP GRIDS LOOK FINE FOR RIGHT NOW. NO SUBSTANTIVE CHANGES TO
TEMPS AT THIS POINT EITHER.
&&
.ABR WATCHES/WARNINGS/ADVISORIES...
SD...FLOOD WATCH THROUGH SUNDAY MORNING FOR CLARK-CODINGTON-DAY-
HAMLIN-HAND-MARSHALL-SPINK.
MN...NONE.
&&
DORN/MOHRHAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE ABERDEEN SD 1133 AM CDT SAT AUG 12 2006 SDZ003>005-009-010-015>017-033>036-045-131645- CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK- STANLEY-SULLY-HUGHES-HYDE-JONES- 1133 AM CDT SAT AUG 12 2006 /1033 AM MDT SAT AUG 12 2006/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA AND NORTH CENTRAL SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL DEVELOP BY EARLY AFTERNOON AND CONTINUE INTO THE EVENING. THERE IS A CHANCE THAT SOME OF THE STORMS MAY BECOME SEVERE...WITH LARGE HAIL THE MAIN THREAT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL CONTINUE THROUGH THE MORNING SUNDAY. THUNDERSTORM DEVELOPMENT IS ALSO POSSIBLE THURSDAY AND FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON BY 2PM CDT. SDZ006-007-011-018>020-022-037-131645- BROWN-MARSHALL-DAY-SPINK-CLARK-CODINGTON-HAMLIN-HAND- 1133 AM CDT SAT AUG 12 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL DEVELOP LATER THIS AFTERNOON ALONG AND EAST OF A SLOW MOVING COLD FRONT DRAPED ACROSS THE REGION. THUNDERSTORMS WILL CONTINUE INTO THE OVERNIGHT HOURS. SOME OF THE STORMS THIS AFTERNOON AND THIS EVENING ALONG AND EAST OF A LINE FROM KENNEBEC TO MILLER TO HECLA WILL DEVELOP IN A VERY MOISTURE RICH...FAVORABLE SHEAR...AND VERY UNSTABLE ENVIRONMENT...RESULTING IN SEVERE HAIL AND THUNDERSTORM WINDS. AN ISOLATED TORNADO IS POSSIBLE THIS EVENING AS WELL. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THESE STORMS FROM LATE THIS AFTERNOON THROUGH SUNDAY MORNING...CREATING THE POTENTIAL FOR FLOODING. A FLOOD WATCH IS IN EFFECT FROM 6 PM CDT TODAY TO NOON CDT ON SUNDAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL CONTINUE THROUGH THE DAY SUNDAY. THUNDERSTORM DEVELOPMENT IS ALSO POSSIBLE THURSDAY AND FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AFTER 4 PM CDT. MNZ039-046-SDZ008-021-023-048-051-131645- TRAVERSE-BIG STONE-ROBERTS-GRANT-DEUEL-LYMAN-BUFFALO- 1133 AM CDT SAT AUG 12 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL DEVELOP LATER THIS AFTERNOON ALONG AND EAST OF A SLOW MOVING COLD FRONT DRAPED ACROSS THE REGION. THUNDERSTORMS WILL CONTINUE INTO THE OVERNIGHT HOURS. SOME OF THE STORMS THIS AFTERNOON AND THIS EVENING ALONG AND EAST OF A LINE FROM KENNEBEC TO MILLER TO HECLA WILL DEVELOP IN A VERY MOISTURE RICH...FAVORABLE SHEAR...AND VERY UNSTABLE ENVIRONMENT...RESULTING IN SEVERE HAIL AND THUNDERSTORM WINDS. AN ISOLATED TORNADO IS POSSIBLE THIS EVENING AS WELL. VERY HEAVY RAIN IS ALSO POSSIBLE WITH THESE STORMS FROM LATE THIS AFTERNOON THROUGH SUNDAY MORNING...CREATING THE POTENTIAL FOR FLOODING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL CONTINUE THROUGH THE DAY SUNDAY. THUNDERSTORM DEVELOPMENT IS ALSO POSSIBLE THURSDAY AND FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AFTER 4 PM CDT. DORN
PRELIMINARY LOCAL STORM REPORT...CORRECTED FOR TIME OF EVENT
NATIONAL WEATHER SERVICE ABERDEEN SD
335 PM CDT SAT AUG 12 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0310 PM TSTM WND GST 9 S ROSCOE 45.32N 99.33W
08/12/2006 E60 MPH EDMUNDS SD EMERGENCY MNGR
&&
GNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
338 PM CDT SAT AUG 12 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0315 PM HAIL 7 S ROSCOE 45.35N 99.33W
08/12/2006 E0.88 INCH EDMUNDS SD EMERGENCY MNGR
&&
GNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
403 PM CDT SAT AUG 12 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0329 PM HAIL 4 E KIDDER 45.88N 97.63W
08/12/2006 E0.75 INCH MARSHALL SD PUBLIC
&&
GNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
440 PM CDT SAT AUG 12 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0340 PM HAIL MINA 45.44N 98.76W
08/12/2006 E0.75 INCH EDMUNDS SD TRAINED SPOTTER
&&
GNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
532 PM CDT SAT AUG 12 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM TSTM WND GST 5 SW TULARE 44.69N 98.58W
08/12/2006 E60 MPH SPINK SD PUBLIC
&&
GNThe Aberdeen radar (KABR), 141 km away, was scanning. The volume nearest the first event began at 00:09 UTC.
1 tornado. Local standard time, as filed.
A tornado north of Milbank destroyed a well built machine shed, moved some farm machinery, and snapped several medium sized trees off.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2006Every state in 2006This day in weather historyThe tornado archive for South Dakota, 2006Warnings in South Dakota, August 2006
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: 5532136.