1 flash flood, 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 Sioux Falls, SD wrote its last area forecast discussion before the first event at May 31, 2:34 PM CST, 1 hour 31 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 334 PM CDT TUE MAY 31 2005 .DISCUSSION... VERY BUSY FORECAST WITH MULTIPLE CHANCES FOR RAINFALL AND THUNDERSTORMS. UPPER LEVEL ENERGY PRESSING NORTH AND EAST TODAY...BRINGING A GOOD SHOT FOR RAINFALL EAST OF I29 TONIGHT. STRONG SUBSIDENCE BEHIND THIS AND WOULD EXPECT THIS TO STAY MAINLY DRY. RAIN SHOULD COME TO AN END OVER FAR EAST CWA LATE TONIGHT...THEN SOUTHEAST WINDS SET UP AND BRING A CHANCE FOR THUNDERSTORMS TO CENTRAL SD ON WED AFTERNOON. SOME COULD BE SEVERE ...BUT SHOULD REMAIN ISOLATED TO SCATTERED. ENVIRONMENT BECOMES MUCH MORE FAVORABLE ON THURSDAY NIGHT FOR WIDESPREAD THUNDERSTORMS AS MID LEVEL BOUNDARY REALLY STARTS CRANKING. SOME SEVERE POSSIBLE...BUT APPEARS TO BE A HEAVY RAIN THREAT. SAME THING ON FRIDAY NIGHT...ALTHOUGH IT MAY BE A BIT FARTHER NORTH AND WEST. OVER STORY...BETWEEN NOW AND SATURDAY MORNING...PRETTY MUCH EVERYONE SHOULD SEE SOME RAINFALL. DID NOT MAKE ANY LARGE CHANGES FROM GUIDANCE. MAIN WAVE MOVES THROUGH ON SATURDAY...BUT BOUNDARY APPEARS TO GET TIED UP SOMEWHERE IN NORTHERN NEBRASKA...AND THIS SHOULD BRING A GOOD CHANCE FOR THUNDERSTORMS AGAIN SUNDAY NIGHT AND MONDAY. IF THINGS CONTINUE TO LOOK THIS GOOD...NICE EAST-WEST FRONT...HIGH MOISTURE POTENTIAL AND INSTABILITY...THIS COULD PROVE TO BE OUR FIRST BIG ORGANIZED SEVERE EVENT OF THE YEAR. IN THE LATTER PERIODS...SATURDAY THROUGH TUESDAY...MODELS HAVE CONTINUED TO TREND WARMER (TOWARDS YESTERDAYS DGEX OUTPUT) BEHIND WAVE EXITING ON SATURDAY...AND WILL MAINTAIN WARM TEMPERATURES SUNDAY. OTHERWISE...NOT TOO FAR FROM GUIDANCE ANY ONE PERIOD AS OFF AN ON CHANCES FOR CONVECTION MAKE IT DIFFICULT. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && 08
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1113 AM CDT TUE MAY 31 2005 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-011200- AURORA-BEADLE-BON HOMME-BROOKINGS-BRULE-BUENA VISTA IA- CHARLES MIX-CHEROKEE IA-CLAY-CLAY IA-COTTONWOOD MN-DAKOTA NE- DAVISON-DICKINSON IA-DIXON NE-DOUGLAS-GREGORY-HANSON-HUTCHINSON- IDA IA-JACKSON MN-JERAULD-KINGSBURY-LAKE-LINCOLN-LINCOLN MN- LYON IA-LYON MN-MCCOOK-MINER-MINNEHAHA-MOODY-MURRAY MN-NOBLES MN- OBRIEN IA-OSCEOLA IA-PIPESTONE MN-PLYMOUTH IA-ROCK MN-SANBORN- SIOUX IA-TURNER-UNION-WOODBURY IA-YANKTON- 1113 AM CDT TUE MAY 31 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS... SHOWERS AND THUNDERSTORMS WILL SPREAD OUT OF NEBRASKA INTO SOUTHEAST SOUTH DAKOTA THIS AFTERNOON. THESE SHOWERS AND THUNDERSTORMS WILL SPREAD SLOWLY INTO WESTERN MINNESOTA AND IOWA OVERNIGHT. THESE STORMS ARE NOT EXPECTED TO BE SEVERE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A FEW THUNDERSTORMS ARE POSSIBLE WEDNESDAY...MAINLY IN THE MORNING...WITH A SLIGHT CHANCE OF THUNDERSTORMS AGAIN WEDNESDAY NIGHT IN SOME AREAS. THESE STORMS ARE NOT EXPECTED TO BE SEVERE. THUNDERSTORMS WILL DEVELOP LATE THURSDAY OR THURSDAY NIGHT. WITH THE AIR BECOMING WARMER AND MORE UNSTABLE...SOME OF THESE STORMS COULD BE SEVERE. THE THREAT OF THUNDERSTORMS...SOME POSSIBLY SEVERE...WILL CONTINUE FRIDAY INTO SATURDAY...AS STRONG LOW PRESSURE ALOFT MOVES EAST OVER THE ROCKY MOUNTAINS. A BOUNDARY WILL DEVELOP ACROSS THE AREA LATE THIS WEEKEND INTO EARLY NEXT WEEK. THIS BOUNDARY WILL BECOME THE FOCUSING MECHANISM FOR THUNDERSTORMS...SOME OF WHICH MAYBE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.CRH.NOAA.GOV/FSD. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. BT
The Sioux Falls radar (KFSD), 91 km away, was scanning. The volume nearest the first event began at 22:02 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused significant street flooding. Several intersections were closed by water up to two feet deep.\
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2005Every state in 2005This day in weather historyWarnings in South Dakota, May 2005
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: 5453442.