Thunderstorms produced heavy rain and flash flooding at Huron in Beadle County in southeast South Dakota on the afternoon of June 7th.
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The episode as NWS FSD wrote it up.
Thunderstorms produced heavy rain and flash flooding at Huron in Beadle County in southeast South Dakota on the afternoon of June 7th.
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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Jun 7, 3:21 PM CST, 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SIOUX FALLS SD 421 PM CDT SUN JUN 7 2015 .SHORT TERM...(THIS EVENING THROUGH MONDAY) ISSUED AT 358 PM CDT SUN JUN 7 2015 VERY STRONG NORTHERN STREAM WAVE DIGGING THROUGH EASTERN NORTH DAKOTA THIS AFTERNOON...WHILE CONFLUENCE WITH SOUTHERN STREAM IN ADVANCE SLIPPING SOUTHWARD ACROSS THE CWA. A BAND OF LIGHT RAINFALL HAS CONTINUED THROUGH THE AFTERNOON IN THE FRONTOGENETIC FORCING BUT IS GRADUALLY DECREASING AT PRESENT ACROSS EXTREME SOUTHEAST SOUTH DAKOTA...NORTHEAST NEBRASKA AND NORTHWEST IOWA. THIS TREND IS EXPECTED TO CONTINUE THROUGH THE REMAINDER OF THE AFTERNOON. AS A RESULT OF THE PRECIPITATION AND CLOUDS...A MUCH COOLER AND STABLE AIRMASS IS OVER MUCH OF THE CWA. HOWEVER...ON THE NORTHWESTERN FRINGE OF THE CLOUD SHIELD...HAVE MANAGED TO GET ENOUGH HEATING TO PUSH TEMPS TO AROUND 80 DEGREES...AND GENERATED ENOUGH SURFACE BASED CAPE TO POP UP SCATTERED THUNDERSTORMS ALONG A THETA-E GRADIENT ON THE EDGE OF THE CLOUD SHIELD. DESPITE 600-1000 CAPE...MUCH OF IT LOOKS TO BE IN THE HAIL GENERATION RANGE...SO SHOULD SEE A FEW STORMS CAPABLE OF SMALL HAIL AND WIND GUSTS TO 40 TO 50 MPH. THESE SHOULD SUCCUMB TO THE DIURNAL CYCLE...AT LEAST IN TERMS OF STRENGTH AND COVERAGE BY EARLY EVENING...AS WELL AS ATTEMPT TO PROGRESS INTO THE MORE STABLE AIR SOUTHWARD. FOR THE REMAINDER OF THE OVERNIGHT... WILL SEE A GRADUAL DECREASE IN CLOUDS...ALTHOUGH WILL RETAIN A FEW HIGH CLOUDS STREAMING IN FROM THE NORTHWEST. MONDAY LOOKS TO BE A PLEASANT AND WARM DAY...IF NOT SOMEWHAT BREEZY OVER MUCH OF THE EASTERN HALF OF THE AREA. TEMPS DRIVEN LARGELY BY MIXING...WHICH SUGGEST A QUICKER THAN TYPICAL RISE EARLY IN THE DAY AS NORTHWEST WINDS SURFACE...AND A FINAL PLACE GENERALLY IN THE 80S. .LONG TERM...(MONDAY NIGHT THROUGH SUNDAY) ISSUED AT 358 PM CDT SUN JUN 7 2015 MONDAY NIGHT THROUGH WEDNESDAY AFTERNOON STILL LOOKS LIKE A MOSTLY DRY PERIOD. MODELS SHOW SOME MID LEVEL MOISTURE PASSING OVER THE EASTERN PART OF THE AREA MONDAY NIGHT BUT DO NOT SEE ENOUGH SUPPORT FOR SHOWER MENTION..ONLY FOR NON ZERO POPS. MONDAY SHOULD BE NICE AND WARM THEN TUESDAY LOOKS HOT WITH AN IDEAL WARMING PATTERN JUST AHEAD OF A COLD FRONT. CLOUD DOVER SHOULD BE MORE MINIMAL THAN MONDAY AND THE HEATING OVER THE THERMAL AXIS ALONG AND JUST AHEAD OF THE FRONT SHOULD SEND TEMPERATURES UP TO 90 OR SO...PERHAPS EVEN A FEW MID 90S. MOISTURE AVAILABILITY FOR THUNDERSTORMS ALONG THE FRONT DOES NOT LOOK TOO GOOD. THE FRONT IS NOT EXPECTED TO ARRIVE UNTIL THE END OF THE DAY...WITH EARLIER ARRIVAL IT WOULD HAVE A BETTER SHOT AT A FEW STORMS OVER THE AREA...AS IT IS...WE ARE TARGETING ANY SPOTTY STORMS FOR TUESDAY NIGHT. AFTER COORDINATION WILL GO WITH JUST A SLIGHT CHANCE AND CONFINE THAT TO SOUTHWEST MN. THE FRONT WILL PASS SOUTH OF THE AREA BEFORE STALLING. THE APPROACH OF THE WESTERN TROUGH WILL BRING A SURGE OF MOISTURE AND SOME INSTABILITY TO THE AREA...AND THE DYNAMIC AND THERMAL SUPPORT WITH THE TROUGH APPROACHING...AND THE FRONT STARTING SOUTH OF THE AREA...SETS OF A RATHER WET POTENTIAL COUPLE OF DAYS WEDNESDAY NIGHT INTO FRIDAY...WITH AN OPENING SLIGHT CHANCE MENTION WEST WEDNESDAY AFTERNOON. AN INTERESTING FACTOR IN THE MOISTURE EQUATION COULD BE RESIDUAL MID LEVEL TROPICAL MOISTURE FROM DYING HURRICANE BLANCA BEING SPREAD INTO THE WESTERN PART OF THE COUNTRY BY THE TROUGH. YESTERDAY SEEMED TO PRESENT A DRY PICTURE FOR NEXT WEEKEND AND THAT COULD STILL HOLD...BUT MODELS NOW DEPICT ANOTHER TROUGH APPROACHING FROM THE SOUTHWEST. THE THERMAL SUPPORT DOES NOT LOOK GOOD BUT GIVEN SOME DYNAMIC SUPPORT...WILL GO WITH THE EXTENDED GUIDANCE CHANCE POPS FOR THE WEEKEND. TEMPERATURES WHICH WILL COOL SOME BEHIND THE FRONT WEDNESDAY WILL BE FAIRLY COOL DURING THE DAY LATE IN THE WEEK ESPECIALLY NORTH...GIVEN LOADS OF CLOUD COVER AND THE RAIN THREAT...THEN LOOK TO WARM SLOWLY FOR THE WEEKEND. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON) ISSUED AT 1125 AM CDT SUN JUN 7 2015 BAND OF MID LEVEL SHOWERS WILL PRESS THROUGH AREAS SOUTH OF INTERSTATE 90 THROUGH EARLY AFTERNOON...BUT CEILINGS WILL REMAIN VFR WITHIN THE PRECIP AREA. OTHER ISOLATED TO SCATTERED SHOWERS AND THUNDER WILL DEVELOP DURING THE EARLY TO MID AFTERNOON HOURS ON THE NORTHERN FLANK OF EXITING CLOUD SHIELD AS ATMOSPHERE DESTABILIZES...BUT WILL LIKELY REMAIN BELOW MENTIONABLE LEVELS IN TAFS PAST A VICINITY MENTION. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && SHORT TERM...CHAPMAN LONG TERM... AVIATION...CHAPMAN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 325 PM CDT SUN JUN 7 2015 MNZ071-SDZ038>040-052>054-057-058-082030- LINCOLN MN-BEADLE-KINGSBURY-BROOKINGS-JERAULD-SANBORN-MINER-BRULE- AURORA- 325 PM CDT SUN JUN 7 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MINNESOTA...EAST CENTRAL SOUTH DAKOTA...SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS LATE AFTERNOON WILL BE CAPABLE OF SMALL HAIL AND WIND GUSTS TO AROUND 40 MPH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SHOWERS AND THUNDERSTORMS WILL RETURN TO THE AREA LATE THIS WEEK. WHILE A FEW STORMS MIGHT BECOME SEVERE IT IS TOO EARLY TO PINPOINT JUST WHEN. STAY TUNED FOR FURTHER UPDATES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THIS AFTERNOON AND TONIGHT. IAZ001>003-012>014-020>022-031-032-MNZ072-080-081-089-090-097-098- NEZ013-014-SDZ050-055-056-059>071-082030- LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY IA-PLYMOUTH-CHEROKEE- BUENA VISTA-WOODBURY-IDA-LYON MN-MURRAY-COTTONWOOD-NOBLES-JACKSON- PIPESTONE-ROCK-DIXON-DAKOTA-GREGORY-LAKE-MOODY-DAVISON-HANSON- MCCOOK-MINNEHAHA-CHARLES MIX-DOUGLAS-HUTCHINSON-TURNER-LINCOLN SD- BON HOMME-YANKTON-CLAY SD-UNION- 325 PM CDT SUN JUN 7 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST IOWA...SOUTHWEST MINNESOTA...NORTHEAST NEBRASKA...EAST CENTRAL SOUTH DAKOTA...SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SHOWERS AND THUNDERSTORMS WILL RETURN TO THE AREA LATE THIS WEEK. WHILE A FEW STORMS MIGHT BECOME SEVERE IT IS TOO EARLY TO PINPOINT JUST WHEN. STAY TUNED FOR FURTHER UPDATES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Aberdeen radar (KABR), 124 km away, was scanning. The volume nearest the first event began at 21:26 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding of several streets, including several main intersections, in Huron on the afternoon of June 7th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2015Every state in 2015This day in weather historyWarnings in South Dakota, June 2015
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: 582600.