Slow moving thunderstorms produced very heavy rains of 4 to 6 inches across parts of northeast South Dakota resulting in flash flooding.
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 episode as NWS ABR wrote it up.
Slow moving thunderstorms produced very heavy rains of 4 to 6 inches across parts of northeast South Dakota resulting in flash flooding.
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 14, 11:21 PM CST, 2 hours 9 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE ABERDEEN SD 1221 AM CDT FRI AUG 15 2014 .UPDATE... AVIATION DISCUSSION HAS BEEN UPDATED FOR THE 06Z TAFS. AFTER HAVING PERUSED THE LAST FEW RUNS OF THE HRRR...HAVE DECIDED TO UPDATE THE FORECAST. HIGH PWATS/MODERATE LLJ MAY LEAD TO WARM AIR ADVECTION BAND OF STORMS LATE TNT OVER THE NORTHEAST PART OF SOUTH DAKOTA. SLOW MOVEMENT OF CELLS OR EVEN SOME TRAINING OF CELLS COULD LEAD TO FAIRLY HEFTY AMOUNTS IF STORMS MATERIALIZE. 3HR FFG IS QUITE VARIABLE OVER THE NORTHEAST CWA GIVEN RECENT PATCHY HEAVY RAIN. FOR NOW WILL HOLD OFF ON ANY HEADLINES BUT KEEP MONITORING THE SITUATION AND HAVE ADDED HEAVY RAIN TO THE FORECAST. && .PREVIOUS DISCUSSION... .SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT RATHER COMPLEX FORECAST SHAPING UP IN THE SHORT TERM WITH SEVERAL CHANCES FOR SHOWERS AND THUNDERSTORMS. LOW LEVEL JET CONVERGENCE CONTINUES TO BRING SCATTERED SHOWERS TO THE REGION...BUT THEY HAVE BEEN WANING OVER THE PAST HOUR AND SHOULD CONTINUE TO SEE A SLOW DIMINISHING TREND. FOCUS WILL THEN SHIFT TO WESTERN SD WHERE NEW CONVECTION IS FIRING IN RESPONSE TO APPROACHING SHORTWAVE ENERGY. WEAK SFC LOW ALSO ANALYZED OVER SOUTHWEST SD. THERE REMAINS SOME DISAGREEMENT AS TO AREAL COVERAGE AND PLACEMENT OF PRECIP OVERNIGHT...BUT POTENTIAL IS THERE FOR HEAVY RAIN SO HAVE INSERTED THAT INTO FORECAST. A COUPLE MODELS SHOWING DEVELOPMENT LATE TONIGHT ALONG LOW LEVEL JET NOSE ACROSS NORTHERN SD...BUT NOT SEEING SUPPORT FOR THIS IN OTHER VARIOUS CAM SOLUTIONS. SFC LOW SLOWLY PUSHES EAST THROUGH THE SHORT TERM PERIOD...WITH RAINFALL CHANCES INCREASING FROM WEST TO EAST THROUGH THE PERIOD. OVERALL...SVR PARAMETERS ARE NOT OVERLY IMPRESSIVE SO IT APPEARS THE BIGGEST THREAT WILL BE HEAVY RAIN GIVEN THE HIGH PWAT VALUES AND RAIN EFFICIENCY. THOUGHT ABOUT FLASH FLOOD HEADLINES GIVEN POTENTIAL SLOW STORM MOVEMENT AND VERY HEAVY RAINFALL. AT THIS POINT THOUGH...OVERALL CONFIDENCE IN PLACEMENT OF HEAVY RAIN AXIS...AND CONFIDENCE IN AREAL COVERAGE AND TIMING IS IN QUESTION. WILL LEAVE FOR LATER SHIFTS TO PONDER...BUT DO HAVE HEAVY RAIN MENTION IN GRIDS/FORECAST ANYWAY. .LONG TERM...SUNDAY THROUGH THURSDAY THE MODELS AGREE WELL IN THE LONG TERM WITH THE UPPER LEVEL FLOW PATTERN. A LARGE LOW PRESSURE AREA/TROUGH EXTENDING FROM NORTHERN MT INTO SOUTHERN CANADA ON SUNDAY MAKES ITS WAY SLOWLY EAST ALONG THE US/CANADIAN BORDER AND INTO THE GREAT LAKES REGION BY TUESDAY NIGHT. THE UPPER DIVERGENCE IN ADVANCE OF THIS TROUGH...WAA...AND LLJ ALONG WITH A GOOD SURFACE COOL FRONT TO FOLLOW WILL BRING GOOD CHANCES OF SHOWERS AND THUNDERSTORMS SUNDAY INTO MONDAY EVENING. OTHERWISE...IT SHOULD BE DRY FOR A COUPLE DAYS WHILE ANOTHER LARGE LOW PRESSURE TROUGH DEVELOPS INTO THE NORTHWEST US FOR WEDNESDAY INTO THURSDAY. THIS WILL KICK TOWARDS OUR REGION INTO THURSDAY NIGHT. AGAIN...THE WAA...LLJ AND UPPER DIVERGENCE ALONG WITH THE ADVANCING SURFACE FRONT WILL BRING BACK CHANCES OF SHOWERS AND STORMS TO THE REGION FOR WEDNESDAY NIGHT THROUGH THURSDAY. HIGHS WILL BE MOSTLY IN THE 80S THROUGH THE PERIOD. && .AVIATION... 06Z TAFS FOR THE KABR...KATY...KPIR AND KMBG TERMINALS VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD...EXCEPT FOR DURING ANY THUNDERSTORM ACTIVITY. THUNDERSTORMS WILL BE POSSIBLE OVERNIGHT AT ALL TAF SITES...ESPECIALLY EAST OF THE MO RIVER WHERE THE LLJ WILL BE PREVALENT. && .ABR WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. && UPDATE...TDK SHORT TERM...TMT LONG TERM...MOHR AVIATION...CONNELLY WEATHER.GOV/ABERDEEN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 416 AM CDT THU AUG 14 2014 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-150930- TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL- ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK- CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES- LYMAN-BUFFALO- 416 AM CDT THU AUG 14 2014 /316 AM MDT THU AUG 14 2014/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE REGION TODAY. SEVERE STORMS ARE NOT ANTICIPATED...HOWEVER BRIEF HEAVY RAIN IS POSSIBLE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A MORE SIGNIFICANT LOW PRESSURE SYSTEM WILL MOVE INTO THE REGION ON FRIDAY. THIS SYSTEM WILL BRING MORE WIDESPREAD RAIN CHANCES TO THE AREA. STORMS THAT DO DEVELOP FRIDAY WILL BE VERY SLOW MOVING...AND PERSISTENT HEAVY RAIN IS A MAJOR CONCERN. ADDITIONAL THUNDERSTORMS CHANCES ARE POSSIBLE THROUGH EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER RAIN REPORTS ARE APPRECIATED. SERR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 136 AM CDT FRI AUG 15 2014 SDZ019-150700- CLARK- 136 AM CDT FRI AUG 15 2014 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHERN CLARK COUNTY UNTIL 200 AM CDT... AT 135 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR FORDHAM COLONY...OR 10 MILES SOUTHWEST OF CLARK...MOVING SOUTHEAST AT 15 MPH. THE STORMS WILL REMAIN OVER MAINLY RURAL AREAS OF THE ADVISED COUNTY.. PENNY TO NICKEL SIZE HAIL IS EXPECTED WITH THIS STORM. PRECAUTIONARY/PREPAREDNESS ACTIONS... SLOW MOVING STORMS CAN PRODUCE VERY HEAVY RAINFALL...AND POSSIBLE FLASH FLOODING. PLEASE STAY CLEAR OF FLOOD WATERS! && LAT...LON 4476 9763 4461 9776 4475 9798 4485 9788 TIME...MOT...LOC 0636Z 296DEG 11KT 4475 9783 CONNELLY
The Aberdeen radar (KABR), 88 km away, was scanning. The volume nearest the first event began at 07:31 UTC.
3 flash flood. Local standard time, as filed.
Six inches of rain resulted in water flowing over the road along with a pasture full of water.
Very heavy rains caused flash flooding which washed out a culvert resulting in a road closure.
Nearly 6 inches of rain resulted in water in the basement along with a large amount of standing water in the fields.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2014Every state in 2014This day in weather historyWarnings in South Dakota, August 2014
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: 540483, 540486, 540488.