A complex of thunderstorms that developed across South Dakota during the evening of Saturday, August 23rd, moved northeast and formed a line. This line produced damaging winds as it went northeast across west central and central Minnesota during the early morning hours of Sunday, August 24th.
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 MPX wrote it up.
A complex of thunderstorms that developed across South Dakota during the evening of Saturday, August 23rd, moved northeast and formed a line. This line produced damaging winds as it went northeast across west central and central Minnesota during the early morning hours of Sunday, August 24th.
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 Twin Cities, MN wrote its last area forecast discussion before the first event at Aug 23, 10:06 PM CST, 3 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1106 PM CDT SAT AUG 23 2014 .UPDATE... ISSUED AT 1054 PM CDT SAT AUG 23 2014 UPDATED TO INCLUDE 06Z AVIATION DISCUSSION BELOW. && .SHORT TERM...(THIS EVENING THROUGH SUNDAY) ISSUED AT 339 PM CDT SAT AUG 23 2014 THE MAIN SHORT TERMS CONCERN IS TIMING OF CONVECTION AND SEVERE WEATHER THREAT TONIGHT INTO SUNDAY...AND THE EXCESSIVE HEAT THREAT FOR SUNDAY AFTERNOON/EVENING. LIGHT SHOWERS LIFTING NORTHEAST ASSOCIATED WITH INITIAL UPPER WAVE LIFTING OVER THE NORTHEAST CWA. REMNANTS OF THE MCS STILL RIDING EAST OVER SOUTHWEST WISCONSIN AND MAY CONTINUE SMALL THREAT OF THUNDER OVER WEST CENTRAL WISCONSIN THIS EVENING. MODELS HAVE SLOWED MAIN SHOT OF CONVECTION ASSOCIATED WITH THE UPPER TROUGH OVERNIGHT. APPEARS CONVECTION FIRING NOW OVER CENTRAL SOUTH DAKOTA NOW. THIS SI FORECAST TO MOVE INTO WESTERN MN MAINLY AFTER 03Z. SOME QUESTION AS TOO HOW FAR EAST TO TAKE THE THUNDER. IT APPEARS EAST CENTRAL MN WILL BY ON THE EDGE OF THIS THREAT AS MAINLY TROUGH/FORCING LIFTS OVER THE NORTHWEST CWA. WITH PW'S AROUND 2 INCHES...SOME HEAVY RAIN LIKELY...ESPECIALLY WEST CENTRAL OVERNIGHT. THE FRONT MOVES INTO WESTERN MN DURING THE MORNING SUNDAY...AND WILL CONTINUE CHANCE POPS WITH THE FRONT MOVING INTO CENTRAL MN BY AFTERNOON. SEVERE THREAT FOR THE LATE AFTERNOON REMAINS AS WELL...MAINLY FROM CENTRAL AND NORTHERN MN WITH BETTER DEEP LAYER SHEAR EXPECTED. NEXT PROBLEM WILL BE EXCESSIVE HEAT THREAT FOR SUNDAY AFTERNOON. CURRENTLY CONTINUE THE TREND OF TEMPERATURES WARMING TO AROUND 90 OVER THE EASTERN HALF OF THE CWA. WITH DEWPOINTS IN THE LOWER 70S...HEAT INDICES ARE FORECAST TO RISE TO 95 TO 100 FOR A FEW HOURS IN THE AFTERNOON/EVENING. CONSIDERED AND ADVISORY FOR THE METRO...BUT THE CLOUD COVER TRENDS REMAIN TRICKY AGAIN INTO SUNDAY AFTERNOON. WE SHOULD SEE CLOUDS CLEAR THROUGH THE LATE MORNING...WITH MORE SUNSHINE EXPECTED. CONFIDENCE IS LOW ENOUGH WITH MARGINAL CRITERIA NOT TO ISSUE AT THIS TIME. WILL HAVE ONE MORE MODEL RUN TO SEE IF CLOUDS CLEAR MORE QUICKLY IN THE MORNING. .LONG TERM...(SUNDAY NIGHT THROUGH SATURDAY) ISSUED AT 339 PM CDT SAT AUG 23 2014 SHOWERS AND THUNDERSTORMS WILL LIKELY PUSH ACROSS THE EASTERN PART OF THE FORECAST AREA ON SUNDAY NIGHT AS THE FRONT SWEEPS ACROSS EASTERN MINNESOTA AND WISCONSIN. PRECIPITABLE WATER VALUES SOAR TO AROUND 180 PERCENT OF NORMAL /1.8 INCHES/...WITH 1 TO 2 INCH RAINFALL AMOUNTS THEREFORE APPEARING POSSIBLE EAST OF THE INTERSTATE 35 CORRIDOR. FOR MONDAY...THE FRONT APPEARS TO SHIFT FAR ENOUGH SOUTH AND EAST OF THE AREA TO LIMIT PRECIPITATION CHANCES. HAVE REMOVED POPS FOR MONDAY. HOWEVER...THE FRONTAL BOUNDARY WILL STALL JUST SOUTH OF THE AREA THROUGH MID WEEK AS MULTIPLE MID LEVEL SHORTWAVES OVERRIDE THE BOUNDARY. THIS WILL FACILITATE LIKELY PRECIP CHANCES FROM MONDAY NIGHT INTO AT LEAST WEDNESDAY ACROSS SOUTHERN MINNESOTA...TAPERING OFF TO 20-30 PERCENT CHANCES NORTHWARD TO THE TWIN CITIES AND EAU CLAIRE. THE 23.12Z ECMWF AND GEM CONTINUED TO SLOW THE EXIT OF THE TROUGH/BOUNDARY...WHERE AS THE GFS BLASTS PRECIP OUT OF THE AREA BY THURSDAY. THINK THE GFS IS A BIT TOO QUICK...AT LEAST FOR SOUTHERN/EASTERN AREAS...SO HAVE INCLUDED SHOWER AND THUNDERSTORM CHANCES ON THURSDAY FOR SOUTH/EAST CENTRAL MN AND WEST CENTRAL WI. WHILE PRECIP CHANCES WILL NEED NOTABLE REFINEMENT WITH FUTURE MODEL RUNS...COOLER THAN NORMAL TEMPS ARE MORE OF A GIVEN...WITH HIGHS FROM TUESDAY THROUGH FRIDAY RANGING FROM THE UPPER 60S TO MID 70S. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z SUNDAY NIGHT) ISSUED AT 1054 PM CDT SAT AUG 23 2014 LOW STRATUS STARTING TO SPREAD ACROSS ALL TAF SITES LATE THIS EVE...AND LIKELY TO REMAIN AS SUCH THROUGH THE OVERNIGHT HOURS... ESP FOR THOSE SITES NOT RECEIVING RAINFALL. THE WI TAF SITES AND KMSP LOOK TO HIT IFR CIGS AND STAY THERE FOR MUCH OF THE OVERNIGHT HRS...BUT LITTLE TO NO VSBY RESTRICTION WITH WINDS AT ARND 10 KT OVERNIGHT. WRN TAF SITES WILL BE SUSCEPTIBLE TO SHRA/TSTMS APCHG FROM THE SW ALONG A WMFNT. KAXN-KSTC HAVE THE GREATEST CHC OF OVERNIGHT PRECIP...SO HAVE BROUGHT THOSE CONDS DOWN TO IFR VSBY IN TEMPO GROUPS WITH PREVAILING IFR CIGS. CONDS GRADUALLY IMPROVE TMRW MRNG INTO TMRW AFTN...INCLUDING REACHING VFR FOR ALL SITES. HOWEVER...ANOTHER ROUND OF CONVECTIVE SHWRS/TSTMS LOOKS LIKELY TMRW AFTN...ESP FOR CENTRAL-ERN MN INTO WRN WI. HAVE REFLECTED THIS WITH ANOTHER MENTION OF PRECIP LATE TMRW AFTN INTO TMRW EVE...BUT AM HOLDING OF CB/TS MENTION ATTM. WINDS WILL REMAIN CLOSE TO 10 KT THROUGH WHILE SWINGING FROM E-SE OVERNIGHT TO S TMRW TO SW TMRW EVE. KMSP...CIGS TO REMAIN SUB-1700 FT FOR AT LEAST THRU FIRST HALF OF THE 24/06Z TAFS...BOUNCING BETWEEN LOW-END MVFR AND IFR. NOT LOOKING FOR A VSBY RESTRICTION...BUT THE CIG RESTRICTION WILL BE SOLID. CONDS UNDERGO A GRADUAL IMPROVEMENT TO VFR BY LATE AFTN...BUT A ROUND OF SHWRS /POSSIBLY ISOLD TSTMS/ PUSH THRU SUN EVE WHICH MAY BRING CONDS DOWN AGAIN. THIS PRECIP DOES NOT APPEAR TO BE PROLONGED...WHICH SHOULD ALLOW FOR VFR CONDS TO PREVAIL BY DAYBREAK MON MRNG. /OUTLOOK FOR KMSP/ MON...VFR. WINDS W 5-10 KTS. TUE-THU...MAINLY VFR. CHANCE OF MVFR IN OCNL SHRA/TSRA. WINDS N TO NE 5-10 KTS. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. && UPDATE...JPC SHORT TERM...DWE LONG TERM...LS AVIATION...JPC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 231 PM CDT SAT AUG 23 2014 MNZ051>053-059>063-066>070-074>078-082>085-091>093-WIZ014>016- 023>028-241945- SHERBURNE-ISANTI-CHISAGO-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-BROWN-NICOLLET-LE SUEUR-RICE- GOODHUE-WATONWAN-BLUE EARTH-WASECA-STEELE-MARTIN-FARIBAULT- FREEBORN-POLK-BARRON-RUSK-ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA- EAU CLAIRE- 231 PM CDT SAT AUG 23 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MINNESOTA...EAST CENTRAL MINNESOTA...SOUTH CENTRAL MINNESOTA... SOUTHEAST MINNESOTA...NORTHWEST WISCONSIN AND WEST CENTRAL WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS ARE POSSIBLE TONIGHT. AN ISOLATED SEVERE STORM WITH LARGE HAIL AND STRONG WIND IS POSSIBLE INTO CENTRAL MINNESOTA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS ARE POSSIBLE SUNDAY INTO EARLY MONDAY... AND AGAIN MONDAY NIGHT THROUGH WEDNESDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT THERE IS A SLIGHT RISK OF SEVERE STORMS NORTH OF THE TWIN CITIES ON SUNDAY. LOCALLY HEAVY RAINFALL IS POSSIBLE OVER SOUTH CENTRAL MINNESOTA... NEAR THE I-90 CORRIDOR... MONDAY NIGHT INTO WEDNESDAY WITH THE POSSIBILITY OF SUCCESSIVE ROUNDS OF SHOWERS AND THUNDERSTORMS IN THAT AREA. ON SUNDAY...AFTERNOON HEAT INDICES WILL TOP OUT NEAR 100 DEGREES FROM SOUTH CENTRAL INTO EAST CENTRAL MINNESOTA AND WESTERN WISCONSIN. THOSE PARTICIPATING IN OUTDOOR ACTIVITIES ON SUNDAY SHOULD TAKE APPROPRIATE PRECAUTIONS TO PREPARE FOR THE WARM TEMPERATURES AND HIGH HUMIDITY LEVELS. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED. MNZ041>045-047>050-054>058-064-065-073-241945- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-LAC QUI PARLE-SWIFT-CHIPPEWA-KANDIYOHI-MEEKER- YELLOW MEDICINE-RENVILLE-REDWOOD- 231 PM CDT SAT AUG 23 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MINNESOTA...EAST CENTRAL MINNESOTA...SOUTHWEST MINNESOTA AND WEST CENTRAL MINNESOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS ARE POSSIBLE TONIGHT. A FEW STORMS COULD BE SEVERE ...WITH LARGE HAIL AND DAMAGING WIND GUSTS BEING THE PRIMARY CONCERNS. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE... PARTICULARLY OVER FAR WEST CENTRAL MINNESOTA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS ARE POSSIBLE SUNDAY INTO EARLY MONDAY... AND AGAIN MONDAY NIGHT THROUGH WEDNESDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT THERE IS A SLIGHT RISK OF SEVERE STORMS NORTH OF THE TWIN CITIES ON SUNDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Minneapolis radar (KMPX), 172 km away, was scanning. The volume nearest the first event began at 07:11 UTC.
2 thunderstorm wind. Local standard time, as filed.
A measured wind gust of 61 mph occurred at the Benson Regional Airport.
An outbuilding was destroyed along with trees blown down near Alexandria.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2014Every state in 2014This day in weather historyWarnings in Minnesota, 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: 531484, 531483.