2 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 Lincoln, IL wrote its last area forecast discussion before the first event at Aug 18, 6:54 PM CST, 1 hour 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 754 PM CDT FRI AUG 18 2006 .DISCUSSION... WITH POSSIBLE SVR WX APPROACHING...WILL MAKE THIS BRIEF. MAIN FRONT STILL TO THE SOUTH OF THE FA...THOUGH REMNANTS OF SFC BOUNDARY FROM TODAYS OUTFLOW STILL HAS A BIT OF A REFLECTION ON SATELLITE IMAGERY AND ALSO IN THE SFC OBS...WELL NORTH OF SYNOPTIC FRONT. MANY BOUNDARIES TO PLAY WITH AS ONE OF TWO S/W MOVE OUT OF THE FA. NEXT S/W MOVING INTO NERN MO AND COLLIDING WITH BEST INSTABILITY PER LI MAX IN MSAS DATA CENTERED OVER VERY WARM TEMPS LINGERING OVER KCOU. SVR STORMS PRODUCING SOME GOOD WINDS OVER THE MISS RIVER VALLEY ATM...WITH SMALL WATCH BOX ISSUED FOR LSX FA. GOING FORECAST WILL DO JUST FINE. NO UPDATES AT THIS TIME. && .PREV DISCUSSION... LATEST SURFACE ANALYSIS HAD LOW PRESSURE CENTERED NEAR THE NEBRASKA/KANSAS BORDER. A NEARLY STATIONARY FRONT EXTENDED EAST ALONG THE IOWA/MISSOURI BORDER AND THROUGH THE I-74 CORRIDOR OF CENTRAL ILLINOIS AND INDIANA. ALOFT...A SHORT WAVE WAS LOCATED OVER THE CENTRAL PLAINS...WITH A MORE VIGOROUS WAVE MOVING THROUGH THE ROCKY MOUNTAINS ALONG THE U.S./CANADA BORDER. MAIN WEATHER CONCERNS OVER THE NEXT FEW DAYS REVOLVE AROUND PRECIPITATION CHANCES/AMOUNTS AS THESE TWO UPPER WAVES AND THE ASSOCIATED FRONTAL SYSTEMS MOVE THROUGH THE REGION TONIGHT THROUGH SATURDAY NIGHT. 12Z MODELS IN REASONABLE OVERALL AGREEMENT...ESPECIALLY WITH RESPECT TO PRECIPITATION CHANCES THROUGH SATURDAY NIGHT. THE GFS IS A WETTER FOR A LONGER PERIOD OF TIME AND THIS SOLUTION IS QUESTIONABLE GIVEN THE AMOUNT OF CONVECTIVE FEEDBACK THE MODEL IS EXHIBITING. GUIDANCE TEMPERATURES CLOSE AND REASONABLE AS WELL...SO WILL NOT STRAY TOO FAR. SHORT TERM...TONIGHT THROUGH MONDAY... TONIGHT...UPPER WAVE OVER THE CENTRAL PLAINS IS EXPECTED TO REACH INDIANA/OHIO BY SATURDAY MORNING. THIS WAVE IS EXPECTED TO DEVELOP A SURFACE LOW ALONG THE FRONTAL BOUNDARY THAT WILL TRACK EAST THROUGH ILLINOIS. THE FORCING ASSOCIATED WITH THESE FEATURES AND THE VERY MOIST AIRMASS IN PLACE ACROSS THE REGION WILL BRING A CONTINUED HIGH CHANCE OF SHOWERS/STORMS THROUGH THE NIGHT...ESPECIALLY NORTH OF I-70. THE MEAN FLOW WILL PARALLEL THE FRONT/MOISTURE AXIS FOR MUCH OF THE THE NIGHT AND SUPPORT CONTINUED TRAINING OF PRECIPITATION. PRECIPITABLE WATER VALUES IN THE MOISTURE AXIS ARE ABOVE 2 INCHES AND THE SHOWERS/STORMS TODAY HAVE BEEN VERY EFFICIENT RAIN PRODUCERS. WILL MENTION A HEAVY RAINFALL THREAT NORTH OF I-70 AND INCLUDE MUCH OF EAST CENTRAL ILLINOIS IN A FLOOD WATCH (WERE A FEW INCHES OF RAIN HAVE ALREADY FALLEN TODAY). SATURDAY AND SATURDAY NIGHT...PLAINS SHORT WAVE AND ASSOCIATED SURFACE LOW WILL BE TO OUR EAST BY EARLY SATURDAY AND ALLOW THE FRONTAL BOUNDARY TO SAG TO THE SOUTH. HOWEVER...THE BOUNDARY WILL BE SLOW TO DEPART. THE FRONT WILL GET A STRONGER PUSH BY LATE SATURDAY NIGHT AS AN UPPER WAVE FROM THE ROCKIES ALONG THE U.S/CANADA BORDER MOVES THROUGH THE GREAT LAKES REGION. PLAN TO MAINTAIN LOW SHOWER/STORM CHANCES UNTIL THE FRONT DEPARTS...BUT THE BETTER FORCING WILL STAY TO OUR NORTH AND BETTER INSTABILITY WILL STAY TO OUR SOUTH. SUNDAY THROUGH MONDAY...HIGH PRESSURE WILL START TO BUILD IN BY SUNDAY AND LINGER THROUGH THE REMAINDER OF THE PERIOD. THE FLOW ALOFT IS EXPECTED TO BE GENERALLY NEUTRAL FROM THE NORTHWEST. THIS PATTERN AND A MUCH DRIER AIRMASS SHOULD SUPPORT BENIGN WEATHER. LONG TERM...TUESDAY THROUGH FRIDAY...MODELS/ENSEMBLES GENERALLY AGREE THAT WE WILL BE TRANSITIONING TO A RIDGE WEST/TROF EAST PATTERN OVER NORTH AMERICA DURING THE PERIOD...BUT DIFFER QUITE A BIT ON THE DETAILS. MOST OF THE MODELS SUPPORT KEEPING MORE OF THE ENERGY TO OUR NORTH...WHICH WOULD NOT SUPPORT A SIGNIFICANT RISK OF PRECIPITATION. THIS MODEST CONSENSUS AND THE TIMING DIFFERENCES IN ANY DISCRETE WAVES SUPPORT KEEPING THE FORECAST DRY AT THIS TIME. THIS EVOLVING PATTERN SUPPORTS TEMPERATURES AT OR SLIGHTLY BELOW NORMAL THROUGH THE PERIOD. && ILX WATCHES/WARNINGS/ADVISORIES... FLOOD WATCH...TONIGHT...DEWITT...PIATT...CHAMPAIGN...VERMILION... CHRISTIAN...MACON...MOULTRIE...DOUGLAS...COLES...EDGAR...SHELBY... CUMBERLAND...AND CLARK COUNTIES. && HJS/BAK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 1139 AM CDT FRI AUG 18 2006 ILZ029-031-036>038-040>057-061>063-066>068-071>073-191645- PEORIA-WOODFORD-FULTON-TAZEWELL-MCLEAN-SCHUYLER-MASON-LOGAN- DE WITT-PIATT-CHAMPAIGN-VERMILION-CASS-MENARD-SCOTT-MORGAN- SANGAMON-CHRISTIAN-MACON-MOULTRIE-DOUGLAS-COLES-EDGAR-SHELBY- CUMBERLAND-CLARK-EFFINGHAM-JASPER-CRAWFORD-CLAY-RICHLAND-LAWRENCE- 1139 AM CDT FRI AUG 18 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT OCCASIONAL THUNDERSTORMS ARE EXPECTED OVER PARTS OF CENTRAL...EAST CENTRAL...AND SOUTHEAST ILLINOIS TODAY AND TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THE THUNDERSTORMS FROM MIDDLE AFTERNOON THROUGH EARLY THIS EVENING MAY BE CAPABLE OF PRODUCING STRONG AND DAMAGING WINDS. IN ADDITION...SOME LOCALIZED FLOODING WILL BE POSSIBLE IN AREAS THAT EXPERIENCE REPEATED ROUNDS OF THE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO SATURDAY EVENING BEFORE A FRONTAL BOUNDARY SHIFTS SOUTH ACROSS THE AREA. THIS WILL HELP PUSH THE THUNDERSTORM THREAT TO OUR SOUTH BY LATE SATURDAY EVENING. AT THIS TIME...IT DOES NOT APPEAR ANY OF THE THUNDERSTORMS WILL APPROACH SEVERE LIMITS DURING THE DAY SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED BETWEEN 3 PM AND 9 PM. ILZ027-028-030-191645- KNOX-STARK-MARSHALL- 1139 AM CDT FRI AUG 18 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT OCCASIONAL THUNDERSTORMS ARE EXPECTED OVER PARTS OF CENTRAL AND SOUTHEAST ILLINOIS TODAY AND TONIGHT. NO SEVERE THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT...HOWEVER SOME OF THE STRONGER STORMS WILL PRODUCE VERY HEAVY RAINFALL AMOUNTS IN A SHORT PERIOD OF TIME ALONG WITH GUSTY WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO SATURDAY EVENING BEFORE A FRONTAL BOUNDARY SHIFTS SOUTH ACROSS THE AREA. THIS WILL HELP PUSH THE THUNDERSTORM THREAT TO OUR SOUTH BY LATE SATURDAY EVENING. AT THIS TIME...IT DOES NOT APPEAR ANY OF THE THUNDERSTORMS WILL APPROACH SEVERE LIMITS DURING THE DAY SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. BARKER
The Lincoln radar (KILX), 72 km away, was scanning. The volume nearest the first event began at 02:19 UTC.
2 thunderstorm wind. Local standard time, as filed.
Small tree limbs were blown across Interstate 72 along the Morgan/Sangamon county line.
Small tree limbs were blown across Interstate 72 along the Morgan/Sangamon county line.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2006Every state in 2006This day in weather historyWarnings in Illinois, August 2006
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: 5530243, 5530244.