1 flash flood, 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 Jul 5, 2:12 PM CST, 2 hours 3 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 312 PM CDT MON JUL 5 2004 .DISCUSSION... CORRECTED TYPO 17Z WATER VAPOR IMAGERY/RUC ANALYSIS INDICATED TWO SEPARATE SHORT WAVES AFFECTING THE CENTRAL PLAINS. ONE STRONG SHORTWAVE...CURRENTLY BRINGING THE PRECIP TO THE CWA WAS CENTERED ACROSS EASTERN NEBRASKA. SECOND SHORTWAVE WAS INDICATED MOVING INTO WESTERN SOUTH DAKOTA. PRECIP/TEMPS WILL BE THE INITIAL FORECAST PROBLEM OVERNIGHT. 12Z MODELS SEEMED TO BE FAR TO SLOW MOVING THIS SYSTEM THROUGH THE AREA WHEN COMPARING TO RADAR MOSAICS WITH THE RUC DOING THE BEST AND NOW THE 18Z ETA CATCHING ON. PRECIP SHOULD COME IN TWO WAVES TONIGHT WITH THE FIRST RAPIDLY WINDING DOWN BETWEEN 00-03Z AND A SECOND AREA ASSOCIATED WITH THE NEXT SHORTWAVE AFTER 03Z. Q VECTORS AND LFQ OF H300 JET FOCUS THE BEST LIFT ACROSS THE NORTHERN CWA...AND THUS HAVE PUT THE HIGHEST POPS. WITH ABUNDANT LOW LEVEL MOISTURE AROUND SHOULD SEE SOME FOG DEVELOP DESPITE LACK OF GOOD RADIATIONAL COOLING. TUESDAY WILL DEFINIATLY BE A BELOW NORMAL DAY AS NORTHERLY FLOW USHERS IN CHILLY H850 TEMPS. COLD H850 TEMPS AND MORNING CLOUD COVER SHOULD KEEP TEMPS IN THE 60S ACROSS MOST AREAS...AND STRONG SUBSIDENCE SHOULD END PRECIP CHANCES AFTER SHORTWAVE EXITS. WILL KEEP WEDNESDAY DRY...ALTHOUGH ETA HINTING AT SOME POSSIBLE LLJ FORCING DEVELOPING IN THE MORNING AND WILL BEGIN TO SLOWLY WARM TEMPERATURES. ADDED POPS TO THURSDAY AS STRONG MIDLEVEL WAA PATTERN SET UP IN THE MORNING AND SHOULD BE GOOD FOR A FEW ELEVATED TSRA. BOTH ETA/GFS BRING STRONG MOISTURE RETURN TO THE REGION ON THURSDAY BUT H700 TEMPS 10-12C AND LACK OF STRONG FORCING SHOULD HOLD CAP...WITH INSTABILITY MOVING INTO PLACE FOR STRONG STORMS FRIDAY. PREFERRED THE GFS HANDLING OF THE MOISTURE RETURN AS THE ETA BRINGS VERY MOIST (DEWPOINTS AROUND 77 ) INTO THE AREA ON THURSDAY WHICH SEEMS A LITTLE HIGH BASED ON WHATS GOING ON DOWNSTREAM. IN THE EXTENDED...NOT A WHOLE LOT OF CHANGES PLANNED TO THE GOING FORECAST AT THIS TIME AS MEDIUM RANGE MODELS STILL SHOWING A LARGE DEGREE OF UNCERTAINTY WITH THE H500 FLOW PATTERN THROUGH THE UPCOMING WEEK. ONE OF THE BIG DIFFERENCES IS STRENGTH OF RIDGE THAT IS EXPECTED TO BUILD OUT AHEAD OF STRONG SHORTWAVE ON THURS-FRIDAY. UKMET/CANADIAN ARE WEAKER WITH THIS FEATURE AND THUS FASTER WITH THE WAVE/FRONT. GFS AND ECMWF ARE MORE AMPLIFIED. ENSEMBLES SEEM TO SUPPORT THE GFS/ECMWF SOLUTION SO WILL LEAN MORE WITH THAT FOR THE FORECAST. ALSO ADDED POPS INTO SATURDAY AS GFS HAS BEEN PRETTY CONSISTENT WITH BRINGING ANOTHER WAVE UP THE FLOW...AND THE ECMWF SUPPORTS THIS. FOR TEMPS...GUIDANCE VALUES ACTUALLY LOOKED PRETTY REASONABLE AFTER FRIDAY SO STAYED CLOSE TO MEX NUMBERS. && .FSD...WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && JRM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 1140 AM CDT MON JUL 05 2004 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-061200- 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- 1140 AM CDT MON JUL 05 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS... AREAS OF STEADY RAIN...SHOWERS AND A FEW THUNDERSTORMS ARE EXPECTED OVER THE AREA THIS AFTERNOON AND TONIGHT...AS LOW PRESSURE MOVES OVER WESTERN IOWA FROM THE NEBRASKA IOWA BORDER AREA. A FEW SEVERE STORMS WITH DIME SIZE HAIL ARE POSSIBLE IN THE SOUTHERN PART OF NORTHWEST IOWA...FAR NORTHEAST NEBRASKA...AND EXTREME SOUTHEAST SOUTH DAKOTA THIS AFTERNOON AND EARLY EVENING. OTHERWISE...AREAS OF HEAVY RAIN WILL BE POSSIBLE...BUT WIDESPREAD HEAVY RAIN IS NOT EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A COLD FRONT WILL MOVE SOUTHEAST INTO THE AREA THURSDAY NIGHT THROUGH FRIDAY NIGHT...WITH A SOUTHERLY FLOW OF WARM MOIST AIR AHEAD OF THE FRONT. THIS SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO THE AREA...WITH A FEW POSSIBLY SEVERE OR HEAVY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE POSSIBLE THROUGH SUNSET ALONG AND SOUTH OF A LINE FROM YANKTON SOUTH DAKOTA TO SIOUX RAPIDS IOWA. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.CRH.NOAA.GOV/FSD. THIS INCLUDES THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK. WILLIAMS
The Sioux Falls radar (KFSD), 127 km away, was scanning. The volume nearest the first event began at 22:15 UTC.
1 flash flood. Local standard time, as filed.
Rainfall of up to four and a half inches falling on saturated ground caused flooding of county roads, farmland, and other low areas in the area southwest of Okabena.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2004Every state in 2004This day in weather historyWarnings in Minnesota, July 2004
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: 5415993.