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 St. Louis, MO wrote its last area forecast discussion before the first event at Aug 26, 3:21 PM CST, 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 421 PM CDT THU AUG 26 2004 .DISCUSSION... CURRENTLY AND FOR TNGT...RADAR MOSAIC SHOWS TWO SML CLUSTERS OF PCPN. FIRST IS OVR S CNTRL MO...AND THIS APPEARS TO BE AIRMASS TYPE TSTMS DVLPG ALG THE OZARK PLATEAU. THE OTR APPEARS TO BE TAKING ADVANTAGE OF STL HEAT ISLAND ALG WITH REMANTS OF OUTFLOW BDRY THAT SETUP ALG MS RVR S OF STL FM CONVECTION LAST NITE. XPCT BOTH AREAS TO WKN/DISPT AFT SS. ATTENTION THEN TURNS TO THE N WHERE MCS XPCTD TO DVLP IN IA THIS EVNG. OUTFLOW WL KICK OUT ON SRN FLANK OF MCS AND WL HELP IT PROPAGATE INTO NERN MO/W CNTRL IL AFT MDNGT. TEMPS XPCTD TO BE AOA WRMST GUIDANCE DUE TO VERY HI DWPTS AND FNT STILL WELL TO THE N...ALTHO THIS CUD BE COMPLICATED WITH RAFL COOLING TEMPS RPDLY DWN THIS ERL EVNG IN A FEW SPOTS. FOR FRI...TWO AREAS OF PCPN TO FCST...FIRST IS LEFTOVER OVRNGT MCS PENETRATING SWD INTO OUR AREA. DEPENDING ON HOW WELL DVLPD OUTFLOW IS...CONVECTION CUD SUSTAIN ITSELF MOST OF THE DAY. FOR NOW...WL FCST MRNG COVECTION ONLY. WL CONCENTRATE AFTN PCPN CHCS ALG APPCHG CDFNT FM THE NW. WITH LOTS OF DEBRIS CLD XPCTD IN THE N...KEPT TEMPS DOWN THERE...BUT STILL HV ARND 90 ALG-S OF I-70 CORR. FOR FRI NGT...WITH PWATS ARND 2.2 AND GREATER WITH WELL DEFINED LLVL BDRY (CDFNT) AND DECENT UPR SUPPORT IN RGT ENTR RGN OF H250 JET...FCSTD CAT POPS THIS PD N AND W OF STL...WITH MENTION OF HVY RAFL POTNL AS PROCESSES WL BE VERY EFFICIENT. MAY NEED FFA THIS PD BUT DUE TO UNCERTAINTIES THAT STILL EXIST...DEFERRED TO NXT SHIFT. FAVORED GFS DEPICTION OF SFC WAVE LATE FRI NGT/SAT MRNG...AND THIS WL ENHANCE RAFL AMNTS ACRS NRN HALF OF FA. MDLS ALSO SHOW CLDS SLOW TO CLR OUT WITH ABUNDANT POST-FNTL LOW CLD HANGING ON TIL SAT NGT/SUN MRNG. FOR THE EXTDD PD (SUN NGT THRU THU)...LRG HI PRES WL DOMINATE THE MID MS VLY THRU THE PD WHICH WL KP PCPN CHCS TO A MINIMUM. GFS SHOWS A WK S/WV MOVG THRU WED/THU BUT MOISTURE MARGINAL AND THERE IS A LACK OF A LLVL FOCUS...SO WL DEFER PCPN CHCS FOR NOW. OTRW... TEMPS XPCTD TO BE AOB NORMAL THRU-OUT PD. && .LSX WATCHES/WARNINGS/ADVISORIES... MO...HEAT ADVSRY FOR E CNTRL AND CNTRL TIL 8 PM THIS EVNG. IL...HEAT ADVSRY FOR STL METRO EAST TIL 8 PM THIS EVNG. && TES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 350 PM CDT THU AUG 26 2004 ILZ058>060-064-065-095>099-MOZ018-019-026-027-035-036-052-271100- ADAMS IL-BOND IL-BROWN-CALHOUN IL-FAYETTE IL-GREENE IL-JERSEY IL- KNOX-LEWIS-LINCOLN-MACOUPIN IL-MARION-MONTGOMERY IL-PIKE-PIKE IL- RALLS-SHELBY- 350 PM CDT THU AUG 26 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF CENTRAL AND NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT. STORMS COULD PRODUCE HEAVY RAIN WITH POSSIBLE FLOODING...ALONG WITH STRONG AND GUSTY WIND AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SLIGHT RISK OF SEVERE THUNDERSTORMS WILL CONTINUE ON FRIDAY. WITH THUNDERSTORMS LIKELY FRIDAY INTO SATURDAY. RAIN MAY BE HEAVY FRIDAY NIGHT. A FRONT WILL CROSS THE AREA ON SATURDAY WITH COOLER AND DRIER AIR PUSHING ACROSS THE AREA BY SUNDAY. .SPOTTER ACTIVATION STATEMENT... SPOTTERS COULD BE NEEDED THIS EVENING AND TONIGHT. ILZ069-070-074-079-MOZ072>075-084-085-099-271100- CLINTON IL-CRAWFORD-IRON-MADISON-MARION IL-RANDOLPH IL-REYNOLDS- ST FRANCOIS-STE GENEVIEVE-WASHINGTON-WASHINGTON IL- 350 PM CDT THU AUG 26 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EAST CENTRAL MISSOURI AND MUCH OF SOUTHERN ILLINOIS. .DAY ONE...TONIGHT THERE IS A CHANCE FOR THUNDERSTORMS THIS EVENING AND TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SLOW MOVING FRONT WILL PRODUCE SHOWERS AND THUNDERSTORMS FRIDAY INTO SATURDAY. BY SUNDAY COOLER AND DRIER AIR WILL MOVE INTO THE AREA. .SPOTTER ACTIVATION STATEMENT... SPOTTERS MAY BE NEEDED THIS EVENING AND TONIGHT. ILZ100>102-MOZ047>049-059>065-271100- COLE-FRANKLIN-GASCONADE-JEFFERSON-MADISON IL-MONITEAU-MONROE IL- OSAGE-ST CHARLES-ST CLAIR IL-ST LOUIS-ST LOUIS CITY-WARREN- 350 PM CDT THU AUG 26 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EAST CENTRAL MISSOURI AND A SMALL PART OF SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT HEAT ADVISORY IS IN EFFECT UNTIL 8 PM THIS EVENING. THERE IS A CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY. A SLOW MOVING FRONT WILL PRODUCE SHOWERS AND THUNDERSTORMS FRIDAY INTO SATURDAY. RAIN MAY BE HEAVY FRIDAY NIGHT. BY SUNDAY COOLER AND DRIER AIRMASS WILL BE PUSHED ACROSS THE AREA. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING AND TONIGHT. MOZ034-041-042-050-051-271100- AUDRAIN-BOONE-CALLAWAY-MONROE-MONTGOMERY- 350 PM CDT THU AUG 26 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EAST CENTRAL AND NORTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT. HEAT ADVISORY IS IN EFFECT UNTIL 8 PM THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY. A SLOW MOVING FRONT WILL PRODUCE SHOWERS AND THUNDERSTORMS FRIDAY INTO SATURDAY. RAIN MAY BE HEAVY FRIDAY NIGHT. BY SUNDAY COOLER AND DRIER AIR WILL MOVE ACROSS THE AREA. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING AND TONIGHT. WDB
The St Louis radar (KLSX), 79 km away, was scanning. The volume nearest the first event began at 22:00 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed two trees and several large limbs blocking Tappmeyer Road near Route V southeast of Owensville.
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: 5418633.