Isolated thunderstorms developed during the afternoon hours. One thunderstorm produced a brief tornado near Williamsville.
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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 ILX wrote it up.
Isolated thunderstorms developed during the afternoon hours. One thunderstorm produced a brief tornado near Williamsville. No damage or injuries were reported.
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 Lincoln, IL wrote its last area forecast discussion before the first event at Sep 6, 5:00 PM CST, 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 600 PM CDT THU SEP 6 2007 .DISCUSSION... ISSUED 300 PM CDT THU SEP 6 2007 BREEZY SOUTHWEST FLOW IN PLACE ACROSS THE MISSISSIPPI VALLEY AHEAD OF A COLD FRONT PUSHING THROUGH THE PLAINS. IN ADDITION...AN UPPER CIRCULATION IS LIFTING THROUGH MISSOURI/ILLINOIS/IOWA AHEAD OF THE FRONT...HELPING TO TRIGGER SHOWERS AND THUNDERSTORMS. MAIN FORECAST CONCERNS THE NEXT FEW DAYS REVOLVE AROUND PRECIPITATION CHANCES WITH THIS UPPER CIRCULATION AND COLD FRONT. 12Z MODELS IN REASONABLE AGREEMENT WITH RESPECT TO FEATURES EXPECTED TO IMPACT FORECAST AREA...WITH NO SOLUTION REALLY FAVORED AT THIS POINT. NOT SURPRISINGLY...GUIDANCE TEMPERATURES CLOSE/REASONABLE AS WELL. SHORT TERM...TONIGHT THROUGH SUNDAY...UPPER CIRCULATION WILL LIFT INTO THE GREAT LAKES REGION TONIGHT. ITS DEPARTURE...WITH THE LOSS OF DIURNAL HEATING...WILL ALLOW THE ONGOING CONVECTION TO DIMINISH. HOWEVER...THE BREAK IN PRECIPITATION THREAT WILL BE SHORT LIVED AS THE UPSTREAM COLD FRONT WILL BRING A THREAT FOR SHOWERS/STORMS BACK INTO AT LEAST THE WESTERN SECTIONS OF THE FORECAST AREA BY MORNING. THE COLD FRONT WILL SLOWLY MOVE THROUGH THE FORECAST AREA ON FRIDAY...WITH MOST LOCATIONS LIKELY SEEING PRECIPITATION. THE FRONT WILL CONTINUE TO SLOW DOWN WITH TIME AS IT BECOMES INCREASINGLY PARALLEL TO THE UPPER FLOW. THE FRONT WILL STALL OUT IN THE VICINITY OF SOUTHERN ILLINOIS ON SATURDAY. PERIODIC IMPULSES MOVING ALONG THE STALLED BOUNDARY WILL BRING A PERIODIC RISK OF SHOWERS/STORMS INTO SUNDAY...ESPECIALLY ACROSS SOUTHEAST ILLINOIS. LONG TERM...MONDAY THROUGH THURSDAY...MODEL/ENSEMBLE AGREEMENT IS FAIR THROUGH THE PERIOD...BUT RUN-TO-RUN CONSISTENCY REMAINS POOR. LATEST MODEL RUNS GENERALLY TRENDING AT LEAST 12 HOURS FASTER WITH THE VIGOROUS UPPER TROF/COLD FRONT THAT PUSHES INTO/THROUGH REGION EARLY IN THE EXTENDED PERIOD. THIS TREND SUGGESTS THE BEST CHANCE OF SHOWERS/STORMS WILL OCCUR MONDAY/MONDAY NIGHT. SIGNIFICANTLY COOLER TEMPERATURES ARE EXPECTED FOR THE REMAINDER OF THE PERIOD WITH UPPER TROFFING TAKING UP RESIDENCE OVER THE EASTERN UNITED STATES. MAY NEED TO GO EVEN COOLER THAN CURRENT FORECAST IF SINGLE DIGIT 850 MB TEMPERATURES PAN OUT BY MIDWEEK. DRY CONDITIONS EXPECTED AFTER FROPA UNLESS ENOUGH MOISTURE HANGS AROUND FOR THE LINGERING UPPER CYCLONIC FLOW/COLD POOL TO WORK ON DURING DIURNAL HEATING. BAK && .AVIATION... ISSUED 600 PM CDT THU SEP 6 2007 SEVERAL SPOKES OF VORTICITY ARE ROTATING AROUND THE UPPER LOW OVER NORTHEAST MISSOURI THIS EVENING. SCATTERED THUNDERSTORMS ARE OCCURRING ASSOCIATED WITH THE LOW WITH ENHANCED CONVECTION ALONG EACH OF THE SPOKES AS THEY MOVE NORTH ACROSS THE REGION. ACTIVITY AWAY FROM THE SPOKES SHOULD DECREASE AS DUSK APPROACHES...HOWEVER THERE WILL LIKELY BE ENOUGH LIFT GIVEN THE LOW LCLS TO PRODUCE SOME ACTIVITY ALONG THE SPOKE. CIGS AND VISIBILITY WILL BE MUCH BETTER AWAY FROM THESE AREAS. WILL TRY TO TIME SPOKE ROTATION THROUGH THE TAF SITES...BUT THIS WILL BE A CHALLENGE. COLD FRONT OVER NORTHERN PLAINS WILL MOVE INTO THE AREA ON FRIDAY WITH A SHIFT FROM SIGNIFICANT SOUTHWEST FLOW TO THE NORTHWEST. GUSTS WILL LIKELY REMAIN UP FOR A WHILE AFTER FRONTAL PASSAGE. CONVECTION SHOULD REFORM ALONG THE FRONT AND WILL TIME DEVELOPMENT BASED ON FRONTAL POSITION AND HEATING. BARKER && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 240 PM CDT THU SEP 6 2007 ILZ027>031-037-038-042>046-048-051>057-061>063-066>068-071>073- 071100- CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT- DOUGLAS-EDGAR-EFFINGHAM-JASPER-KNOX-LAWRENCE-LOGAN-MACON-MARSHALL- MCLEAN-MENARD-MOULTRIE-PEORIA-PIATT-RICHLAND-SANGAMON-SHELBY- STARK-TAZEWELL-VERMILION-WOODFORD- 240 PM CDT THU SEP 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT PERIODS OF RAIN WILL BE THE RULE ACROSS THE AREA THROUGH TONIGHT. SCATTERED THUNDERSTORMS WILL ALSO BE LIKELY THIS AFTERNOON UNTIL SUNSET. SOME OF THE STRONGER STORMS MAY PRODUCE BRIEF HEAVY RAIN AND GUSTY WINDS. THE THREAT FOR ORGANIZED SEVERE THUNDERSTORMS IS LOW...BUT AN ISOLATED TORNADO IS A RISK THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO SATURDAY... WHEN A COLD FRONT WILL MOVE THROUGH AND PUSH THE PRECIPITATION OFF TO THE EAST. SOME LOCATIONS MAY RECEIVE BRIEF HEAVY RAINFALL FROM TIME TO TIME...BUT THE THREAT FOR SEVERE STORMS WILL CONTINUE TO BE LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ036-040-041-047-049-050-071100- CASS-FULTON-MASON-MORGAN-SCHUYLER-SCOTT- 240 PM CDT THU SEP 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT A FLOOD WARNING CONTINUES FOR THE ILLINOIS RIVER FROM HAVANA TO BEARDSTOWN. RIVER LEVELS WILL SLOWLY FALL...BUT REMAIN ABOVE FLOOD STAGE THROUGH TONIGHT. PERIODS OF RAIN WILL BE THE RULE ACROSS THE AREA THROUGH TONIGHT. SCATTERED THUNDERSTORMS WILL ALSO BE LIKELY FROM THIS AFTERNOON UNTIL SUNSET. SOME OF THE STRONGER STORMS MAY PRODUCE BRIEF HEAVY RAIN AND GUSTY WINDS. THE THREAT FOR ORGANIZED SEVERE THUNDERSTORMS IS LOW...BUT AN ISOLATED TORNADO IS A RISK THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SLOW FALL WILL CONTINUE ON THE ILLINOIS RIVER...HOWEVER STAGES WILL CONTINUE ABOVE FLOOD STAGE FROM HAVANA TO BEARDSTOWN FOR THE NEXT FEW DAYS. OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH FRIDAY...WHEN A COLD FRONT WILL MOVE THROUGH AND PUSH THE PRECIPITATION OFF TO THE EAST. SOME LOCATIONS MAY RECEIVE BRIEF HEAVY RAINFALL FROM TIME TO TIME...BUT THE THREAT FOR SEVERE STORMS WILL CONTINUE TO BE LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. KH
The Lincoln radar (KILX), 30 km away, was scanning. The volume nearest the first event began at 23:30 UTC.
1 tornado. Local standard time, as filed.
A tornado briefly touched down in a field. No damage or injuries were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2007Every state in 2007This day in weather historyThe tornado archive for Illinois, 2007Warnings in Illinois, 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: 56535.