1 thunderstorm wind, 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 Omaha, NE wrote its last area forecast discussion before the first event at Jul 22, 1:40 AM CST, 3 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 240 AM CDT THU JUL 22 2004 .DISCUSSION... SURFACE COLD FRONT HAS NUDGED INTO FORECAST AREA...EXTENDING ACROSS NORTHERN NEBRASKA NORTHEAST INTO SOUTHERN MINNESOTA AND ON INTO THE GREAT LAKES REGION. SCATTERED CONVECTION ACROSS PORTIONS OF NEBRASKA CONTINUE TO SLOWLY PROGRESS EAST EARLY THIS MORNING. REGIONAL PROFILERS SHOW RATHER WEAK LOW LEVEL JET IN PLACE. COLD FRONT IS FORECAST TO CONTINUE SOUTH THROUGH THE DAY...NEARING THE NEBRASKA/KANSAS BORDER AROUND 18Z TODAY. THANKS TO HIGH SURFACE DEWPOINTS...INSTABILITY WILL CONTINUE TO INCREASE THROUGHOUT THE DAYTIME HOURS. EXPECT HEAVIEST CONVECTION NEAR LOW LEVEL CONVERGENCE ZONE LATER THIS AFTERNOON AND INTO THE EVENING HOURS ACROSS SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. FORECAST AREA WILL ALSO BE UNDER RIGHT REAR QUAD OF UPPER LEVEL JET...AIDING IN UPPER SUPPORT FOR SCATTERED CONVECTION NORTH OF THE BOUNDARY. COULD SEE LOCALLY HEAVY RAINS...ESPECIALLY ACROSS SOUTHEAST NEBRASKA WITH PWS NEAR 2. FEATURE CONTINUES TO SINK SOUTH INTO KANSAS AND MISSOURI OVERNIGHT...BRINGING THUNDERSTORM ACTIVITY ALONG WITH IT. SOME ACTIVITY MAY CARRY ON ACROSS SOUTHEASTERN NEBRASKA DEPENDING ON HOW FAR SOUTH THE FRONT SLIDES. FOCUS THEN TURNS TO MUCH COOLER TEMPERATURES AS CANADIAN HIGH PUSHES THRU THE CENTRAL PLAINS THRU THE WEEKEND. HIGHS SHOULD ONLY TOP OFF IN THE 70S UNTIL RETURN FLOW SETS UP ON MONDAY. WL CARRY SMALL CHANCE POPS FOR SUNDAY NIGHT IN RETURN FLOW REGIME AS EXTENDED MODELS INDICATE MID LEVEL TROF PASSING THRU. WL CONTINUE A DRY EXTENDED...HOWEVER WILL NEED TO BE MONITORED AS EXTENDED MODELS INDICATE UPPER TROF TO SWING ACROSS THE CENTRAL PLAINS. TIMING QUITE UNCERTAIN AT THIS POINT. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...NONE. IA...NONE. && GRIFFIS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 503 AM CDT THU JUL 22 2004 IAZ069-079-080-090-091-NEZ050>053-065>068-078-088>093-221700- BUTLER-CASS-DOUGLAS-FREMONT IA-GAGE-JEFFERSON-JOHNSON-LANCASTER- MILLS IA-MONTGOMERY IA-NEMAHA-OTOE-PAGE IA-PAWNEE-POTTAWATTAMIE IA- RICHARDSON-SALINE-SARPY-SAUNDERS-SEWARD- 503 AM CDT THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH MUCH OF THE DAY AND INTO THE EVENING HOURS ACROSS THE OUTLOOK AREA. SOME STORMS COULD BE SEVERE...ESPECIALLY THIS AFTERNOON AND TONIGHT WITH DAMAGING WINDS...LARGE HAIL...AND LOCALLY HEAVY RAINFALL THE PRIMARY HAZARDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS MAY CONTINUE INTO FRIDAY MORNING FOR PORTIONS OF SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. IAZ043-055-056-NEZ011-012-015>018-030>034-042>045-221700- ANTELOPE-BOONE-BURT-CEDAR-COLFAX-CUMING-DODGE-HARRISON IA-KNOX- MADISON-MONONA IA-PIERCE-PLATTE-SHELBY IA-STANTON-THURSTON- WASHINGTON-WAYNE- 503 AM CDT THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH MUCH OF THE DAY AND INTO THE EVENING HOURS. WIDESPREAD SEVERE ACTIVITY IS NOT ANTICIPATED...HOWEVER AN ISOLATED SEVERE STORM CANNOT BE RULED OUT. DAMAGING WIND AND LARGE HAIL WOULD BE THE PRIMARY HAZARDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION MAY BE NEEDED TODAY AND THIS EVENING. GRIFFIS
The Omaha radar (KOAX), 70 km away, was scanning. The volume nearest the first event began at 10:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorms wind gusts estimated at 70 to 80 mph uprooted a large tree and downed other large tree branches in town. Several power lines were also downed by the winds or by branches falling on them.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2004Every state in 2004This day in weather historyWarnings in Iowa, 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: 5417256.