2 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 Apr 4, 2:45 AM CST, 3 hours 15 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 345 AM CDT TUE APR 4 2006 .DISCUSSION... HIGH PRESSURE CURRENTLY SITUATED OVER THE PLAINS STATES WILL SHIFT TO THE MISSISSIPPI VALLEY BY THIS AFTERNOON...AND THIS IN CONJUNCTION WITH THE DEVELOPMENT OF LOW PRESSURE ON THE LEE SIDE OF THE ROCKIES WILL USHER IN WARMER TEMPERATURES WITH AN INCREASING SOUTHERLY FLOW DURING THE DAY. IN ADDITION...A TIGHTENING PRESSURE GRADIENT BETWEEN THE TWO FEATURES WILL BRING INCREASINGLY STRONGER WINDS...ESPECIALLY OVER THE WESTERN PORTIONS OF THE CWA BY AFTERNOON. ATTENTION THEN TURNS TO THE TROUGH CURRENTLY PUSHING ONSHORE ALONG THE PACIFIC COAST. AS THE SYSTEM PUSHES THROUGH THE ROCKY MOUNTAIN STATES ON WEDNESDAY...TEMPERATURES OVER OUR AREA WILL WARM EVEN MORE...AND WITH 850 TEMPS APPROACHING THE MID TEENS OVER OUR SOUTHWESTERN ZONES ON WEDNESDAY AFTERNOON...SURFACE TEMPS WILL EASILY RISE INTO THE LOW 70S OVER THIS AREA. A LOW LEVEL JET WILL DEVELOP OVER THE REGION DURING THE DAY ON WEDNESDAY...PULLING MOISTURE OVER THE SOUTHERN PLAINS INTO OUR CWA BY LATE AFTERNOON...AND HAVE INTRODUCED SLIGHT CHANCE POPS OVER OUR EASTERN ZONES DURING THE AFTERNOON HOURS...THEN INCREASING OVER THE ENTIRE CWA BY WEDNESDAY NIGHT AS THE WESTERN TROUGH DRAWS CLOSER. BEST INSTABILITY LOOKS TO BE OVER THE SOUTHERN HALF OF OUR CWA ON THURSDAY AS THE MAIN TROUGH PASSES THROUGH THE REGION...AND WOULD EXPECT THE STRONGEST STORMS TO BE OVER THIS AREA DURING THE DAY. MODELS IN PRETTY GOOD AGREEMENT ON THE PATH OF THE MAIN UPPER WAVE...THROUGH NEBRASKA...BUT DIFFER SOME ON THE TIMING OF THE SYSTEM. THE GFS IS FASTEST WITH THE SYSTEM...WITH THE NAM BEING SLOWER...AND THE ECMWF SOMEWHERE IN BETWEEN. IN ANY EVENT...WENT CLOSER TO THE GFS WITH RUN TO RUN CONSISTENCY OVER THE PAST DAY OR SO. PRECIPITATION LOOKS TO BE A GOOD BET THROUGH EARLY ON FRIDAY...WITH MUCH COOLER AIR COMING IN BEHIND THE SYSTEM. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE IA...NONE. NE...NONE. && JM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 506 AM CDT TUE APR 04 2006 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-051200- 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- 506 AM CDT TUE APR 04 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT FLOODING... MINOR FLOODING WILL CONTINUE ALONG SOME RIVERS AND STREAMS FROM SOUTHEAST SOUTH DAKOTA INTO NORTHWEST IOWA AND SOUTHWEST MINNESOTA. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY AN AREA OF LOW PRESSURE WILL PUSH THROUGH THE NORTHERN PLAINS ON THURSDAY...BRINGING THE POSSIBILITY OF HEAVY RAIN TO THE REGION ON THURSDAY AND THURSDAY NIGHT. LOCAL RAINFALL AMOUNTS IN EXCESS OF 1 INCH WILL BE POSSIBLE THROUGH THE PERIOD. HEAVY RAIN WILL TAPER OFF ACROSS THE REGION ON FRIDAY. HOWEVER...WITH RAIN POSSIBLE FROM WEDNESDAY NIGHT INTO FRIDAY...AND ALREADY SATURATED SOILS...AND MANY STREAMS AND RIVERS REMAINING HIGH DUE TO RECENT RAINS...THERE WILL BE A POTENTIAL FOR ADDITIONAL FLOODING OVER THE AREA. .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.
2 flood. Local standard time, as filed.
Heavy rain resulted in flooding along the Des Moines River. The river rose to one to two feet above flood stage. Flooding was confined mainly to lowlands near the river, including Island Park in Windom. No reports of damage to structures were received.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2006Every state in 2006This day in weather historyWarnings in Minnesota, April 2006
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: 5502093, 5502094.