Scattered showers and thunderstorms developed over the region ahead of an upper level system.
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 episode as NWS LSX wrote it up.
Scattered showers and thunderstorms developed over the region ahead of an upper level system.
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 Sep 6, 4:40 AM CST, 7 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 540 AM CDT THU SEP 6 2007 .DISCUSSION... SCT SHRA AND TSRA MOVG NEWD THRU THE CWA ATTM AHD OF MID LVL LOW CNTRD OVR W CNTRL MO ATTM. WENT WITH HI POPS TDA AS THIS FEATURE TRACKS E-NEWD THRU THE CWA TDA. WILL GO BLW PERSISTANCE FOR MAX TEMPS DUE TO CLOUD CVR AND PERIODS OF SHRA AND A FEW TSRA FOR MUCH OF THE DAYTIME HRS. MAY BE A BRK IN THE PCPN THIS EVNG AS THIS MID LVL LOW WKNS AND MOVES E OF THE CWA. NOCTURNAL CONVECTION SHOULD OCCUR LT TGT OVR THE NRN AND WRN PTN OF THE CWA AS A STG SWLY LLJ BRINGS INCRSG 850 MB WAA...THETA E ADVCTN AND MOISTURE CNVG TO AREAS MAINLY N AND W OF STL. A STG SHRTWV TROF WILL BE MOVG E-NEWD THRU THE NRN PLAINS LT TGT AND FRI MRNG SENDING A CDFNT SEWD THRU THE CWA ON FRI. WILL INCRS POPS OVR THE ENTIRE CWA ON FRI WITH CONVECTION EXPECTED ALONG THIS CDFNT WITH PLENTY OF LOW-MID LVL MOISTURE AND INSTABILITY. NAM MDL IS A LTL STGR WITH THE SFC RDG BLDG SEWD THRU THE NRN PLAINS BHND THIS CDFNT AND HENCE IS A LTL FASTER WITH THE SEWD PROGRESSION OF THE CDFNT COMPARED TO THE GFS MDL. WITH THE MID-UPR LVL FLOW BCMG NRLY ZONAL ON FRI NGT THIS CDFNT SHOULD WKN AND MAY EVENTUALLY STALL OUT ACRS SRN PTNS OF MO AND IL ON SAT. WILL INCLUDE CHC POPS MAINLY OVR THE SERN PTN OF THE CWA ON SAT WITH LINGERING SCT CONVECTION EXPECTED ALONG AND JUST N OF THIS WK FNT. GKS && .AVIATION... FOR THE 12Z TAFS... A SOUTHEASTERLY SURFACE FLOW CONTINUED ACROSS THE REGION EARLY THIS MORNING AHEAD OF A COLD FRONT THAT EXTENDED FROM NORTHERN MN INTO NORTHWEST NEB. THE FRONT WILL CONTINUE TO MOVE SOUTHEASTWARD TODAY AND TONIGHT. BY 12Z FRIDAY, THE FRONT WILL EXTEND FROM NORTHWEST WI ACROSS THE NORTHWEST CORNER OF MO INTO THE OK PANHANDLE. UPPER LOW AND SHORT WAVE WAS LOCATED OVER NORTHWEST MO AT THIS TIME. THIS SYSTEM WILL MOVE NORTHEASTWARD TODAY. ENERGY FROM THIS SYSTEM WAS RESPONSIBLE FOR CLUSTERS OF SHOWERS AND SCATTERED THUNDERSTORMS FROM SOUTHWEST MO INTO EAST CENTRAL MO. THE SHOWERS WERE MOVING TO THE NORTHEAST. PERIODS OF SHOWERS AND SCATTERED THUNDERSTORMS WILL AFFECT THE TAF SITES TODAY. EXPECT MOST OF THE SHOWERS/THUNDERSTORMS WILL BE CLEAR OF THE AREA BY THIS EVENING. TPS && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 554 AM CDT THU SEP 6 2007 ILZ095>097-MOZ018-019-026-027-034>036-041-042-071100- ADAMS IL-BROWN IL-PIKE IL-KNOX-LEWIS-SHELBY-MARION-MONROE-RALLS- PIKE-BOONE-AUDRAIN- 554 AM CDT THU SEP 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL ILLINOIS...CENTRAL MISSOURI AND NORTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT AS AN UPPER LEVEL DISTURBANCE MOVES THROUGH THE REGION. A BRIEF PERIOD OF HEAVY RAINFALL IS POSSIBLE WITH THESE STORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE CHANCE OF THUNDERSTORMS WILL CONTINUE ON FRIDAY AND FRIDAY NIGHT AS A COLD FRONT MOVES SOUTHEASTWARD THROUGH THE REGION. LOCALLY HEAVY RAINFALL IS POSSIBLE WITH THE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT HEAVY RAINFALL AMOUNTS OR ANY FLOODING TO THE NATIONAL WEATHER SERVICE. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 ILZ058>060-064-065-069-070-074-079-098>102-MOZ047>052-059>065- 072>075-084-085-099-071100- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-CALHOUN IL-JERSEY IL- MADISON IL-ST. CLAIR IL-MONROE IL-MONITEAU-COLE-OSAGE-CALLAWAY- MONTGOMERY-LINCOLN-GASCONADE-WARREN-ST. CHARLES-FRANKLIN- ST. LOUIS-ST. LOUIS CITY-JEFFERSON-CRAWFORD-WASHINGTON- ST. FRANCOIS-STE. GENEVIEVE-IRON-MADISON-REYNOLDS- 554 AM CDT THU SEP 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL ILLINOIS...SOUTHWEST ILLINOIS...CENTRAL MISSOURI...EAST CENTRAL MISSOURI AND SOUTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT AS AN UPPER LEVEL DISTURBANCE MOVES THROUGH THE REGION. A BRIEF PERIOD OF HEAVY RAINFALL IS POSSIBLE WITH THESE STORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE CHANCE OF THUNDERSTORMS WILL CONTINUE FRIDAY THROUGH SATURDAY... AND POSSIBLY INTO SATURDAY NIGHT ACROSS PARTS OF SOUTHEASTERN MISSOURI AND SOUTHWESTERN ILLINOIS...AS A COLD FRONT MOVES SOUTHEASTWARD THROUGH THE REGION. LOCALLY HEAVY RAINFALL IS POSSIBLE WITH THE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT HEAVY RAINFALL AMOUNTS OR ANY FLOODING TO THE NATIONAL WEATHER SERVICE. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 GKS
The St Louis radar (KLSX), 67 km away, was scanning. The volume nearest the first event began at 17:46 UTC.
1 thunderstorm wind, 1 lightning. Local standard time, as filed.
Thunderstorm winds damaged a large section of roof on a hotel on the north side of Sullivan, just north of Interstate 44. No injuries were reported.
Lightning struck the 911 tower in Ste. Genevieve. It knocked out fuses, fried two computer circuit boards and took out all the dispatch phones. Service was not back up til the next day.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2007Every state in 2007This day in weather historyWarnings in Missouri, September 2007
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: 60192, 60193.