1 high wind, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 12, 2:11 AM CST, 5 hours 16 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 311 AM CDT THU MAY 12 2005 .DISCUSSION... MASSIVE AMOUNT(COVERAGE) OF RAIN ACROSS THE MIDWEST WITH NEBRASKA...SOUTHERN SD AND NORTHWEST IOWA AGAIN GETTING HIT. SEVERE WEATHER WELL SOUTH OF CWA EARLY THIS MORNING...BUT WITH MEAN STORM MOTION TO THE NORTHEAST AS STORMS PHASE OUT OF SEVERE MODE...SHOULD SEE DECENT RAIN MOVE INTO SOUTHERN CWA. FOR THOSE USING ANY OF THE PRECIPITATION ESTIMATION SCHEMES OFF OF THE RADAR...ESTIMATES ARE COMING IN ABOUT 3 TIMES HIGHER THAN ACTUAL AMOUNTS. THIS LIKELY DUE TO SOME DRY ADVECTION IN THE LOWEST COUPLE THOUSAND FEET AND ALSO TAPPING THE MELTING LEVEL NEAR THE MISSOURI RIVER. NOT OVERLY CONCERNED ABOUT FLOODING POTENTIAL AS BETTER INSTABILITY VERY FAR SOUTH...SO ONLY A MODERATE RAIN FALLING AT ALL LOCATIONS WITH A QUARTER OF AN INCH AN HOUR ABOUT AS HIGH AS ANYONE HAS RECEIVED. SO...WILL GO AHEAD AND CANCEL FLOOD WATCH...BUT A FEW OF THE CREEKS AND STREAMS IN NW IA THAT RECEIVED HEAVY RAIN THE PAST FEW DAYS COULD STILL SEE SOME MINOR FLOODING...ESPECIALLY ALONG THE LITTLE SIOUX RIVER. BACK EDGE OF PRECIP SNEAKING INTO SW CWA AT 0730Z...AND EXPECT THIS TO CONTINUE WORKING NORTHEAST OVERNIGHT. BOTH GFS AND ETA SHOWING VERY GOOD MID LEVEL DRYING...AND THIS WILL BRING AN END TO THE MAJORITY OF THE RAINFALL. BUT...LOW CLOUDS SHOULD HANG TOUGH ALL DAY FOR MOST AREAS EAST OF A GREGORY TO CHAMBERLAIN LINE. SO...COLD WITH NO SUN AND A STIFF EAST TO NORTH WIND. DRIZZLE IS A DEFINITE POSSIBILITY TODAY...SO EVEN AS RAIN ENDS...KIND OF LOOKING LIKE A POTENTIALLY SOGGY DAY. COLD FRONT WORKS ACROSS THE AREA TODAY INTO TONIGHT...THEN MUCH STRONGER SURGE HEADS SOUTH ON FRIDAY NIGHT INTO SATURDAY MORNING. THIS SHOULD BRING ABOUT ANOTHER COLD AND BREEZY DAY...WITH TEMPERATURES THE NEXT 3 DAYS WELL BELOW NORMAL. MAY NEED TO TEMPER HIGHS BACK A FEW DEGREES ON MONDAY AS SFC WINDS WILL LIKELY REMAIN SOUTH TO SOUTHEAST AND FULL MIXING ABOUT 3 TO 5 DEGREES COOLER THAN LATEST FCST. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && 08
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 740 AM CDT THU MAY 12 2005 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-131200- 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- 740 AM CDT THU MAY 12 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT WIND AND FOG... STRONG EASTERLY WINDS WILL GUST TO 40 TO 50 MPH FOR A FEW HOURS THIS MORNING...ALONG AND EAST OF INTERSTATE 29. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .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.
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Non thunderstorm winds blew down 3 to 4 inch tree limbs and tore shingles from the roof of a house about 7 miles north of Hartley.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2005Every state in 2005This day in weather historyWarnings in Iowa, 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: 5453322.