A thunderstorm complex moved across portions of central Illinois to the north of a warm front. This complex produced one report of damaging winds.
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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.
A thunderstorm complex moved across portions of central Illinois to the north of a warm front. This complex produced one report of damaging winds.
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 18, 1:31 AM CST, 1 hour 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 231 AM CDT WED JUL 18 2007 .DISCUSSION... ISSUED 231 AM CDT WED JUL 18 2007 MAIN CONCERN CONTINUES TO BE PRECIP CHANCES THROUGH THURSDAY...AND THE POTENTIAL FOR LOCALLY HEAVY RAINFALL ACROSS NORTHERN PARTS OF THE KILX CWA. 06Z SURFACE CHART INDICATES STATIONARY FRONT DRAPED ACROSS THE SOUTHERN GREAT LAKES WESTWARD INTO NORTHERN IOWA. LARGE CLUSTER OF THUNDERSTORMS HAS DEVELOPED ALONG THIS BOUNDARY ACROSS NORTHERN ILLINOIS ON THE NOSE OF 25-30KT LLJ. ADDITIONAL CONVECTION IS BEGINNING TO DEVELOP UPSTREAM ACROSS NORTHERN IOWA/SOUTHERN MINNESOTA. ALOFT...STRONG RIDGING PREVAILS ACROSS THE CENTER OF THE COUNTRY...WITH NUMEROUS SHORT-WAVES TRACKING AROUND THE PERIPHERY OF THE RIDGE. SHORT TERM...TODAY THROUGH FRIDAY THUNDERSTORMS ACROSS NORTHERN ILLINOIS HAVE BEEN TRACKING MAINLY TO THE SOUTHEAST OVER THE PAST COUPLE OF HOURS...HOWEVER CORFIDI VECTORS SUGGEST A TURN MORE TO THE S/SE...WHICH WOULD BRING PRECIP INTO THE N/NE KILX CWA EARLY THIS MORNING. BASED ON RADAR TRENDS...AREAS FROM BLOOMINGTON E/SE TO CHAMPAIGN AND PARIS STAND THE BEST CHANCE TO SEE THE THUNDERSTORMS. ADDITIONAL STORMS ARE BACK-BUILDING ACROSS NORTHWEST ILLINOIS/NORTHEAST IOWA...WHILE ANOTHER CLUSTER OF STORMS INITIATES FURTHER NORTHWEST ACROSS NORTHERN IOWA/SOUTHERN MINNESOTA. ALL THIS ACTIVITY IS EXPECTED TO TRACK E/SE ALONG THE STALLED FRONTAL BOUNDARY TODAY...SETTING UP THE POSSIBILITY OF LOCALLY HEAVY RAINFALL. LATEST HPC EXCESSIVE RAINFALL GRAPHIC HIGHLIGHTS LOCATIONS ALONG AND NORTH OF I-74 THROUGH THURSDAY MORNING. EVEN THOUGH FLASH FLOOD GUIDANCE NUMBERS ARE STILL FAIRLY HIGH ACROSS THE NORTHERN CWA...THE POTENTIAL FOR SEVERAL ROUNDS OF SHOWERS/STORMS EXISTS...AND WITH PRECIPITABLE WATER VALUES IN EXCESS OF 1.50...ANY STORMS THAT OCCUR WILL LIKELY PRODUCE HEAVY RAINFALL. WILL THEREFORE BE ISSUING A FLASH FLOOD WATCH FOR ALL LOCATIONS ALONG AND NORTH OF THE I-74 CORRIDOR FOR TODAY AND TONIGHT. FURTHER S/SW...MID-LEVEL CAPPING WILL INHIBIT WIDESPREAD CONVECTION TODAY. HOWEVER...GIVEN PRESENCE OF OUTFLOW BOUNDARIES FROM MORNING MCS ACTIVITY AND DESTABILIZING ATMOSPHERE...SHOULD BE ABLE TO FIRE A FEW STORMS DURING THE HEATING OF THE DAY ACROSS THE REST OF THE CWA. WILL CARRY LOW POPS ACROSS THE S/SW CWA...INCREASING TO LIKELY ACROSS THE N/NE. HIGH TEMPS TODAY WILL ONLY CLIMB INTO THE MIDDLE TO UPPER 80S ACROSS THE N/NE...BUT SHOULD RISE INTO THE 90S FURTHER S/SW...WHERE THERE WILL BE LESS PRECIP AND MORE SUNSHINE. WILL FOLLOW THE COOLER MET GUIDANCE NUMBERS MOST CLOSELY...AND UNDERCUT THOSE BY A FEW DEGREES ACROSS AREAS WHERE RAIN WILL LIKELY FALL. CONVECTIVE EMPHASIS WILL SHIFT TO THE PLAINS TONIGHT...AS VIGOROUS SHORT-WAVE TRACKS OUT OF THE ROCKIES AND TRIGGERS A CLUSTER OF STORMS ACROSS SOUTH DAKOTA/NEBRASKA. THIS ACTIVITY WILL PUSH E/SE TOWARD CENTRAL ILLINOIS...BUT SHOULD STAY JUST W/NW OF THE KILX CWA UNTIL CLOSE TO 12Z THU. WILL STILL INCLUDE LOW POPS ACROSS CENTRAL ILLINOIS TONIGHT...BUT THINK BEST RAIN CHANCES WILL HOLD OFF UNTIL WAVE AND ACCOMPANYING FRONT ARRIVE ON THURSDAY. MODELS STILL IN GOOD AGREEMENT WITH FROPA EXPECTED ON THURSDAY. STRONG SHORT-WAVE DROPPING SOUTHWARD OUT OF CANADA WILL HELP ACCELERATE FRONT SOUTHWARD...WITH BOUNDARY EXPECTED TO DROP SOUTH OF ILLINOIS THURSDAY NIGHT. WILL INCREASE POPS INTO THE LIKELY CATEGORY ON THURSDAY DUE TO FAVORABLE TIMING OF FROPA AND AMPLE UPPER-LEVEL SUPPORT. STRONG TO SEVERE STORMS WILL BE POSSIBLE...PARTICULARLY ACROSS LOCATIONS ALONG AND SOUTH OF I-72 DURING THE AFTERNOON...WITH LARGE HAIL AND DAMAGING WIND GUSTS POSSIBLE. RAIN CHANCES WILL QUICKLY COME TO AN END FROM NORTH TO SOUTH THURSDAY NIGHT...AS STRONG HIGH PRESSURE BUILDS SOUTHWARD FROM CANADA. MUCH COOLER AND DRIER WEATHER ON TAP FOR FRIDAY...WITH HIGH TEMPS ONLY IN THE UPPER 70S AND LOWER 80S. LONG TERM...SATURDAY THROUGH TUESDAY COOL WEATHER WILL CONTINUE INTO THE FIRST PART OF THE WEEKEND...WITH AFTERNOON HIGHS IN THE LOWER 80S AND OVERNIGHT LOWS DIPPING INTO THE 50S IN MANY AREAS. WARMING TREND WILL BEGIN BY SUNDAY...AS UPPER RIDGE BUILDS EASTWARD TOWARD THE MIDWEST. DRY WEATHER EXPECTED TO PREVAIL FOR THE REMAINDER OF THE EXTENDED...WITH TEMPS RISING BACK TO AROUND 90 DEGREES BY NEXT TUESDAY. BARNES && .AVIATION... ISSUED 1210 AM CDT WED JUL 18 2007 MAIN FORECAST CHALLENGE THIS PERIOD WILL BE WITH THE CONVECTIVE COMPLEX TO OUR NORTH EARLY THIS MORNING. FAVORED AREA FOR DVLPMNT CONTINUES TO BE ACRS NE IOWA WITH CELLS TRACKING SE INTO NW IL AND THEN SLOWLY FADING AS THEY TRACK AWAY FROM THE STRONGER LOW LVL INFLOW AND BETTER INSTABILITY. HAVE INCLUDED VCTS IN PEORIA AT 08Z AND OPTED TO GO WITH TEMPO GROUPS IN BMI AND CMI BASED ON THE MOVEMENT. IF CURRENT TRENDS CONTINUE...IT APPEARS THE STRONGER CELLS WL PASS JUST NORTH OF OUR TAF SITES BUT AM NOT REAL CONFIDENT ON THAT SCENARIO AT THIS TIME. MAY SEE CIGS AND VSBYS DROP OF BRIEFLY WITH ANY OF THE STRONGER CELLS EARLY WED MRNG IN BMI AND CMI. MOST OF THE CONVECTION IS EXPECTED TO PUSH TO OUR EAST BY 14Z WED WITH MOSTLY VFR CONDITIONS PREVAILING FOR THE REMAINDER OF THE PERIOD. WITH THE THICKER CIRRUS AND AC MOVING IN THE NEXT FEW HOURS...THOUGHT VSBYS WOULD BE HELD UP SOME FROM EARLIER THINKING. SMITH && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 306 PM CDT TUE JUL 17 2007 ILZ027>031-036>038-040>057-061>063-066>068-071>073-181100- CASS-CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND- DE WITT-DOUGLAS-EDGAR-EFFINGHAM-FULTON-JASPER-KNOX-LAWRENCE-LOGAN- MACON-MARSHALL-MASON-MCLEAN-MENARD-MORGAN-MOULTRIE-PEORIA-PIATT- RICHLAND-SANGAMON-SCHUYLER-SCOTT-SHELBY-STARK-TAZEWELL-VERMILION- WOODFORD- 306 PM CDT TUE JUL 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT A SERIES OF UPPER LEVEL DISTURBANCES WILL INTERACT WITH A STALLED OUT FRONTAL BOUNDARY TONIGHT. AS A RESULT... SEVERAL COMPLEXES OF THUNDERSTORMS WILL DROP INTO THE AREA FROM THE NORTHWEST. THE NEXT COMPLEX WILL MOVE ACROSS THE REGION LATER ON TONIGHT. A FEW OF THESE STORMS COULD BECOME SEVERE... WITH DAMAGING WINDS AND LARGE HAIL BEING THE PRIMARY THREATS. IN ADDITION...LOCALLY TORRENTIAL DOWNPOURS MAY CAUSE LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ADDITIONAL ROUNDS OF THUNDERSTORMS CAN BE EXPECTED WEDNESDAY THROUGH THURSDAY...AS THE SLOW MOVING FRONT REMAINS IN THE VICINITY OF CENTRAL ILLINOIS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TODAY AND TONIGHT. HJS
The Lincoln radar (KILX), 100 km away, was scanning. The volume nearest the first event began at 08:57 UTC.
1 thunderstorm wind. Local standard time, as filed.
Doors ripped off an outbuilding east of Urbana.
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: 51553.