1 lightning, 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 11, 2:30 AM CST, 5 hours 30 minutes earlier.
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA NATIONAL WEATHER SERVICE SIOUX FALLS SD 330 AM CDT SUN JUL 11 2004 .DISCUSSION... MOST OF THE PROBLEMS IN THIS FCST PKG ARE IN THE VERY TERM. STRONG MID LVL UPPER WAVE MVG THRU ATTM...WITH THE BACK EDGE OF THE PCPN CLOSELY ASSOCD WITH WHERE THE H7 WINDS BEGIN TO TURN TO THE WNW. MOST OF THE ACTIVITY CONTS TO BE FOUND OVR THE NRN CWA. OBVIOUSLY JUICED UP AIR...AND NOW APPEARS TO BE A BNDRY DVLPING AS SHOWN ON THE KFSD 88D FM NEAR HUTCHINSON COUNTY TO SRN LINCOLN SD. SO WITH OUTFLOW BNDRYS PRESENT...THE AFOREMENTIONED BNDRY...WL HAVE TO CONT TS CHCS INTO THE EARLY MRNG OVR THE ERN HALF OF THE CWA UNTIL THE REST OF THE WAVE DEPARTS. IN ADDN...SOME MORE LOW STRATUS AND AREAS OF FOG HAVE DVLPD OVR THE E...AND WL MENTION THAT AS WELL. FOR THE REST OF THE DAY...THE WRN CWA WL BE QUITE WARM WITH THE CLEAREST SKIES. THE ERN HALF WL ALSO BE WARM AND HUMID...WITH SKIES GOING PARTLY CLOUDY IN THE AFTN. STUBBORN AREA OF HIGH H9 RH LINGERS OVR THE FAR ERN CWA THRU THE ENTIRE AFTN...AND ACTUALLY THRU SW MN IN THE EVENING HRS...SO ACCOUNTED FOR THIS IN THE GRIDS AS LOW CU MAY POP IN THOSE LOCATIONS UNTIL SUNSET. GUIDANCE TEMPS LOOK REASONABLE GIVEN THE H85 TEMPS...ALTHOUGH PREFERRED TO USE THE COOLER GFS H85 TEMPS AS THE ETA HAS BEEN A BIT WARM LATELY. SAME STORY FOR TNGT. NEXT RIDGE RIDER SYSTEM SLIDES DOWN FM THE NW ON MONDAY...EXITING MONDAY EVENING. MID LVLS ARE HORRIBLY CAPPED MONDAY MRNG WITH H7 AIR NEAR 14C MOST LOCATIONS. HOWEVER SOME SLIGHTLY COOLER AIR ADVECTING IN DURING THE AFTN AND EVENING HRS...COUPLED WITH STRONG SFC HTG AND LOW LVL FRONTOGENESIS...COULD GET A FEW TS GOING LATE MONDAY AND MONDAY EVENING. GOOD DEEP LYR DIR WIND SHEAR EXISTS WITH THIS SYSTEM...ESPECIALLY IN SW MN. PUT THE HIGHEST POPS LATE MONDAY AND MONDAY NIGHT IN THE FAR ERN CWA WHERE THE LEAST CAP EXISTS AND USUALLY WHERE RIDGE RIDERS HAVE THE MOST AFFECT BECAUSE OF THAT. ONCE AGAIN...DID NOT DEVIATE FM GUIDANCE TEMPS THAT MUCH FOR MON HIGHS AND TUE MRNG LOWS GIVEN CRNT H85 TEMPS FCST. SUMMER DOLDRUMS I GUESS. SOME BACK DOOR COOLING WILL COME DOWN BEHIND THIS SYSTEM ON TUESDAY...AFFECTING THE ERN CWA THE MOST. NO CHANGES TO THE EXTENDED...BUT MODELS CONT TO SHOW THE FLAT RIDGE RETROGRADING WWRD TO THE RCKYS BY THE MIDDLE OF THE WEEK PRODUCING A SHARP NW FLOW ALOFT FOR THE CWA MID AND LATE WEEK. THIS WL LIKELY PRODUCE A FAIRLY LARGE TEMP CONTRAST FOR HIGHS FM SW MN TO GREGORY COUNTY. RIDGE RIDERS...A LITTLE UNCERTAIN AT THIS POINT. BUT SOME ACTIVITY COULD EXIST LATE IN THE WEEK. && .FSD...WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && MJF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 513 AM CDT SUN JUL 11 2004 SDZ038>040-050-052>071-MNZ071-072-080-081-089-090-097-098- IAZ001>003-012>014-020>022-031-032-NEZ013-014-121200- 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- 513 AM CDT SUN JUL 11 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH DAKOTA... SOUTHWEST MINNESOTA...NORTHWEST IOWA...AND NORTHEAST NEBRASKA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS... NUMEROUS SHOWERS AND THUNDERSTORMS WILL BE MOVING THROUGH FAR EAST CENTRAL SOUTH DAKOTA AND SOUTHWEST MINNESOTA...ENDING BY MID MORNING. FROM NEAR I 90 AND POINTS SOUTHWARD...SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED ALSO THROUGH ABOUT MID MORNING. THESE STORMS ARE NOT SEVERE...BUT ARE PRODUCING A LOT OF CLOUD TO GROUND LIGHTNING. THE RAINFALL HAS ENDED ALONG AND WEST OF A YANKTON TO DE SMET SOUTH DAKOTA LINE. FLOODING... HEAVY RAINFALL WILL BE FOUND IN A LINE FROM COTTONWOOD COUNTY MINNESOTA...EASTWARD INTO LAKE COUNTY SOUTH DAKOTA. THIS LINE OF STORMS IS PRODUCING RAINFALL AMOUNTS OF OVER AN INCH PER HOUR IN MANY LOCATIONS. THE HEAVY RAINFALL WILL END AT ALL LOCATIONS IN THE EARLY TO MID MORNING HOURS...ENDING ANY FLASH FLOOD THREAT. SCATTERED POCKETS OF HEAVY RAINFALL COULD ALSO OCCUR EARLY THIS MORNING OVER NORTHWEST IOWA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A SLIGHT RISK OF THUNDERSTORMS IS POSSIBLE ACROSS THE AREA ON MONDAY AND MONDAY NIGHT. .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 Sioux Falls radar (KFSD), 133 km away, was scanning. The volume nearest the first event began at 14:02 UTC.
1 lightning. Local standard time, as filed.
Lightning struck and destroyed a large tree. The lightning also damaged a computer and a television set in the adjoining house.
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: 5416102.