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 St. Louis, MO wrote its last area forecast discussion before the first event at Aug 23, 2:30 PM CST, 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 330 PM CDT MON AUG 23 2004 .DISCUSSION... BAND OF SHWRS/TSTMS HAS LIFTED NEWD THRU MOST OF THE CWA THIS AFTN AND HAS STABILIZED THE AMS FOR TIME BEING. LLJ FCST TO STRENGTHEN THIS EVE OVR ERN KS/XTRM WRN MO AND NEW DEVELOPMENT HAS BEGUN ALREADY IN WRN MO AND AMS HAS DESTABLIZED AGAIN OVR THERE. LOOK FOR MOST ACTIVITY THIS EVENING TO BE IN NRN PTNS CWA SO HAVE GONE WITH LIKELY POPS NORTH AND CHANCE/LESSER CHANCE POPS FURTHER SOUTH. LOOKS LIKE BROAD TROFFINESS WILL CONTINUE TO OUR WEST WITH PERIODIC S/W RACING NEWD AHEAD OF TROF. LOOK FOR UNSETTLED WX TO CONTINUE ACROSS THE AREA FOR MUCH OF THE WEEK. NEXT PRETTY GOOD S/W APPEARS ON WEDNESDAY AND RIPPLES ACROSS THE AREA THEN. UNTIL THEN LOOKS LIKE LESS ORGANIZATION BETWEEN TONIGHT AND WED BUT WILL KEEP CHC POPS WITH LIS FALLING TO MINUS 4 TO MINUS 8 EACH AFTN. && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && PEDIGO
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 354 PM CDT MON AUG 23 2004 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-241200- ADAMS IL-AUDRAIN-BOND IL-BOONE-BROWN-CALHOUN IL-CALLAWAY-CLINTON IL- COLE-CRAWFORD-FAYETTE IL-FRANKLIN-GASCONADE-GREENE IL-IRON-JEFFERSON- JERSEY IL-KNOX-LEWIS-LINCOLN-MACOUPIN IL-MADISON-MADISON IL-MARION- MARION IL-MONITEAU-MONROE-MONROE IL-MONTGOMERY-MONTGOMERY IL-OSAGE- PIKE-PIKE IL-RALLS-RANDOLPH IL-REYNOLDS-SHELBY-ST CHARLES- ST CLAIR IL-ST FRANCOIS-ST LOUIS-ST LOUIS CITY-STE GENEVIEVE-WARREN- WASHINGTON-WASHINGTON IL- 354 PM CDT MON AUG 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF CENTRAL AND EASTERN MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT. THERE IS A CONTINUED CHANCE OF THUNDERSTORMS ACROSS THE AREA TONIGHT AS A WEAK UPPER LEVEL DISTURBANCE MOVES NORTHEAST THROUGH THE MISSISSIPPI VALLEY. SOME OF THE STRONGER STORMS MAY PRODUCE WIND GUSTS TO 35 MPH...PEA SIZED HAIL....LOCALLY HEAVY DOWNPOURS AND LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY WEAK UPPER LEVEL DISTURBANCES WILL CONTINUE TO PERIODICALLY TRACK ACROSS THE MISSISSIPPI VALLEY THE NEXT FEW DAYS. THE COMBINATION OF THESE DISTURBANCES AND A MOIST UNSTABLE AIR MASS WILL RESULT IN A CHANCE OF THUNDERSTORMS THE REST OF THE WEEK. A COLD FRONT WILL FINALLY MOVE THROUGH THE AREA ON SATURDAY...ACCOMPANIED BY A CHANCE OF THUNDERSTORMS...BUT ALSO USHERING DRIER AND MORE STABLE AIR INTO THE BI-STATE REGION FOR SUNDAY. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT. BRITT
The St Louis radar (KLSX), 99 km away, was scanning. The volume nearest the first event began at 21:15 UTC.
1 lightning. Local standard time, as filed.
Lighting struck a house at 404 South Fourth Street blowing holes in the ceilings and damaging electric and telephone lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2004Every state in 2004This day in weather historyWarnings in Missouri, August 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: 5419938.