Scattered thunderstorms developed ahead of a cold front. Several of these storms were strong to severe in strength.
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 ILX wrote it up.
Scattered thunderstorms developed ahead of a cold front. Several of these storms were strong to severe in strength. One storm produced wind damage in Shelbyville.
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 Jul 4, 2:00 PM CST, 2 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 300 PM CDT WED JUL 4 2007 .DISCUSSION... ISSUED 300 PM CDT WED JUL 4 2007 SHORT TERM...TONIGHT THROUGH SATURDAY... 18Z LINCOLN SOUNDING SHOWS THAT AIRMASS HAS RECOVERED IN THE WAKE OF THE MORNING MCS...WITH CAPE VALUES ABOVE 3000 J/KG AND LITTLE CAP REMAINING. IN RESPONSE...TWO BOUNDARIES IN THE AREA ARE LIGHTING UP WITH CONVECTION. ONE IS AN OUTFLOW BOUNDARY ACCOMPANIED BY A MESOSCALE CONVECTIVE VORTICITY MAX OVER WESTERN ILLINOIS THAT WILL MOVE EAST-SOUTHEAST AND REMAIN MOSTLY SOUTHWEST OF OUR FORECAST AREA. SCATTERED STORMS WILL BE LIKELY FURTHER EAST OF THIS FEATURE IN THE UNCAPPED AIRMASS AS WELL...EXTENDING TOWARD CMI/DVN. THE SECOND BOUNDARY IS THE OUTFLOW FROM THE MORNING MCS AND IS ACROSS SOUTHERN ILLINOIS JUST TO OUR SOUTHEAST. CONVECTION WITH THIS FEATURE SHOULD REMAIN TO THE SOUTH. IN ADDITION TO THESE OUTFLOW BOUNDARIES...THE MAIN SYNOPTIC COLD FRONT ORD-PIA-BRL WILL NUDGE SOUTHEASTWARD THIS EVENING AND WILL LIKELY BE THE FOCUS OF MORE STORMS IN THE NEXT COUPLE OF HOURS AS IT MOVES INTO AN INCREASINGLY UNSTABLE AIRMASS. BOTTOM LINE...WILL HAVE LIKELY POPS EVERYWHERE THIS EVENING EXCEPT THE EXTREME NORTHWEST. AFTER MIDNIGHT...THE MAIN SYNOPTIC FRONT WILL SLOW UP SOMEWHAT AS IT ENCOUNTERS UPPER RIDGING. WILL THEREFORE KEEP CHANCE POPS AFTER 06Z IN THE SOUTHEAST...WITH SLIGHT CHANCE IN THE CENTRAL ZONES. A COUPLE OF FEATURES TO WATCH ON THURSDAY. FIRST WILL BE THE COLD FRONT THAT WILL BE DRAPED ACROSS SOUTHERN ILLINOIS. WILL CONTINUE WITH CHANCE POPS ACROSS THE EXTREME SOUTHEAST...BUT MOST OF THE PRECIPITATION SHOULD BE JUST TO OUR SOUTH. UPSTAIRS...A SECONDARY SHORTWAVE WILL MOVE SOUTHEAST ACROSS THE GREAT LAKES AND INTO THE MEAN UPPER TROUGH OVER THE NORTHEASTERN STATES. ALL OF THE DYNAMICS AND MOST OF THE CONVECTION WITH THIS WAVE WILL BE TO OUR NORTHEAST...BUT ISOLATED STORMS MAY DEVELOP ALONG ITS ATTENDING SURFACE TROUGH OVER EASTERN ILLINOIS. WILL PAINT SOME SLIGHT CHANCE POPS IN THE EAST THURSDAY WITH THIS IN MIND. QUIET WEATHER WILL THEN TAKE OVER FOR FRIDAY AND SATURDAY WITH A WARMING TREND. LONG TERM...SUNDAY THROUGH MONDAY... SURFACE RIDGE WILL PUSH EAST OF THE AREA THIS WEEKEND...ALLOWING SOUTHWESTERLY LOW LEVEL FLOW AND INCREASING TEMPERATURES. MOS GUIDANCE FOR HIGHS ON SUNDAY STILL LOOK ON THE WARM SIDE...BUT ARE TRENDING DOWNWARD TOWARD OUR FORECAST NUMBERS. WITH 850 MB TEMPERATURES HOLDING FROM 18-20 DEGC...HIGHS IN THE LOWER HALF OF THE 90S APPEARS REASONABLE. WARMER TEMPERATURES WILL BE TO OUR NORTHWEST NEAR THE COLD FRONT THAT WILL BE COMING INTO IOWA BY THE END OF THE DAY. THIS FRONT WILL GRADUALLY SLOW DOWN AS IT GETS SOUTH OF THE MAIN WESTERLIES AND TRIES TO BUCK THE PERSISTENT UPPER RIDGE TO OUR SOUTH. USING A GFS/ECMWF BLEND...WILL COUNT ON THE FRONT MAKING IT INTO EXTREME NORTHERN ILLINOIS MONDAY AND INTO CENTRAL ILLINOIS BY 12Z TUESDAY. WILL HAVE CHANCE/SLIGHT CHANCE POPS WITH THIS FEATURE...BUT NO HIGHER THIS EARLY UNTIL THE EXACT EVOLUTION OF THE FRONT BECOMES BETTER DEFINED. AS THE FRONT CONTINUES TO INCH SOUTHWARD...DRIER AIR WILL BEGIN TO SPREAD INTO THE NORTHERN COUNTIES PERHAPS AS EARLY AS TUESDAY NIGHT OR NEXT WEDNESDAY. WILL BEGIN TO TRIM POPS IN THE NORTH FOR THOSE TWO PERIODS. 04 && .AVIATION... ISSUED 1245 PM CDT WED JUL 4 2007 COLD FRONT OVER NW IL FROM CHICAGO TO GALESBURG TO KIRKSVILLE MO WILL PRESS SE INTO CENTRAL IL THIS AFTERNOON...AND INTO SE IL THIS EVENING. SCATTERED THUNDERSTORMS TO DEVELOP ALONG AND AHEAD OF THIS COLD FRONT WHICH NEARS PIA BEFORE 20Z AND I-72 BY 00Z. SCATTERED CONVECTION CURRENTLY DEVELOPING IN MORE UNSTABLE AIR MASS IN SOUTHERN IL THAT WAS NOT WORKED OVER BY DECAYING MCS OVER CENTRAL IL THIS MORNING. SCATTERED CUMLUS CLOUDS OF 1.5 TO 3 KFT DEVELOPING OVER IL WITH DAYTIME HEATING OF UNSTABLE AIR MASS. HAVE VCTS AT PIA DURING MID AND LATE AFTERNOON AND TEMPO TS BMI AND I-72 TAF SITES WHERE COLD FRONT PASSES THROUGH LATER AND BETTER CHANCES OF THUNDERSTORMS. CEILINGS AS LOW AS 1.5 TO 3 KFT WITH THUNDERSTORMS AND VISIBILITIES OF 2 TO 3 MILES THOUGH LOCALLY LOWER WITH HEAVY DOWNPOURS SINCE AIR MASS QUITE MOIST WITH 12Z KILX PRECIPITABLE WATER 1.77 INCHES. THUNDERSTORM CHANCES SHIFT SE OF TAF SITES AFTER SUNSET/02Z AS COLD FRONT SLIPS INTO SE IL. SKIES BECOME MOSTLY CLEAR AND SOME FOG COULD DEVELOP AS WEST WINDS BECOME LIGHT AND LOW LEVELS STAY MOIST. VSBYS AS LOW AS 2 TO 4 MILES POSSIBLE OVERNIGHT. WINDS TURN NW AND INCREASE TO AROUND 10 KFTS FROM 14 TO 18Z TUE WITH SCATTERED CLOUDS AT OR ABOVE 5 KFT. HUETTL && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 308 PM CDT WED JUL 4 2007 ILZ027>031-036>038-040>048-055-057-051100- CASS-CHAMPAIGN-DE WITT-DOUGLAS-EDGAR-FULTON-KNOX-LOGAN-MARSHALL- MASON-MCLEAN-MENARD-PEORIA-PIATT-SCHUYLER-STARK-TAZEWELL- VERMILION-WOODFORD- 308 PM CDT WED JUL 4 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND EAST CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL LIKELY DEVELOP LATE THIS AFTERNOON INTO EARLY EVENING AS A COLD FRONT MOVES SOUTHEAST ACROSS CENTRAL ILLINOIS. A FEW OF THE THUNDERSTORMS MAY BECOME STRONG TO POSSIBLY SEVERE THROUGH 8 PM...WITH THE PRIMARY THREAT BEING DAMAGING WIND GUSTS. SOME STORMS COULD ALSO PRODUCE VERY HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE WILL BE A CHANCE FOR THUNDERSTORMS MONDAY AND TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FROM 2 TO 8 PM TODAY. ILZ049>054-056-061-051100- CHRISTIAN-COLES-MACON-MORGAN-MOULTRIE-SANGAMON-SCOTT-SHELBY- 308 PM CDT WED JUL 4 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND EAST CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL LIKELY DEVELOP LATE THIS AFTERNOON INTO MID EVENING...AS A COLD FRONT MOVES SOUTHEAST INTO CENTRAL ILLINOIS. A FEW OF THE THUNDERSTORMS MAY BECOME SEVERE THROUGH 8 PM...WITH THE PRIMARY THREAT BEING DAMAGING WINDS. SOME STORMS COULD ALSO PRODUCE VERY HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE WILL BE A CHANCE FOR THUNDERSTORMS MONDAY AND TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FROM 2 TO 8 PM TODAY. ILZ062-063-066>068-071>073-051100- CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND- 308 PM CDT WED JUL 4 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS ARE LIKELY FROM LATE THIS AFTERNOON INTO OVERNIGHT AS A COLD FRONT MOVES INTO THE AREA TONIGHT. SOME OF THE THUNDERSTORMS MAY BECOME SEVERE THROUGH MIDNIGHT...WITH THE PRIMARY THREAT BEING DAMAGING WINDS. SOME STORMS COULD ALSO PRODUCE VERY HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A FEW STORMS MAY LINGER INTO THURSDAY UNTIL THE COLD FRONT EXITS SOUTHEAST ILLINOIS THURSDAY EVENING. THERE WILL BE A CHANCE OF THUNDERSTORMS AGAIN ON TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED FROM 4 PM UNTIL MIDNIGHT. HUETTL/SMITH
The Lincoln radar (KILX), 93 km away, was scanning. The volume nearest the first event began at 22:57 UTC.
1 thunderstorm wind. Local standard time, as filed.
Numerous trees, power lines and power poles were blown down on the south side of Shelbyville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2007Every state in 2007This day in weather historyWarnings in Illinois, July 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: 51484.