A warm front pushing northward into central Illinois triggered isolated thunderstorms during the afternoon of June 11th. A few cells produced 50 to 60 mph wind gusts across parts of Clay and Lawrence counties.
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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 warm front pushing northward into central Illinois triggered isolated thunderstorms during the afternoon of June 11th. A few cells produced 50 to 60 mph wind gusts across parts of Clay and Lawrence counties.
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 Jun 11, 1:46 PM CST, 1 hour 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 246 PM CDT FRI JUN 11 2010 .DISCUSSION... ISSUED 245 PM CDT FRI JUN 11 2010 WARM FRONT HAS NOW PUSHED NORTH OF THE STATE...WITH ALL OF ILLINOIS NOW IN THE SOUPY AIR. HAVE HAD A FEW AREAS NUDGING 100 DEGREE HEAT INDICES...MAINLY ACROSS THE SOUTHEAST CWA BEFORE THE PASSAGE OF SOME SHOWERS AND STORMS. LATEST RADAR INDICATED THE MAIN LINE OF STORMS EXTENDED FROM NEAR DECATUR EAST ALONG HIGHWAY 36. UPPER AIR ANALYSIS SHOWED THE SMALL UPPER LOW ACROSS THE SOUTHERN PLAINS HAD LIFTED NORTHEAST INTO SOUTHEAST MISSOURI. MAIN FORECAST ISSUE INVOLVES AMOUNT OF RAIN THAT WILL ACCOMPANY THIS UPPER LOW...AS WELL AS HEAT INDEX VALUES ON SATURDAY. OVERALL THUNDER CHANCES THE NEXT FEW DAYS ARE ALSO A BIT PERPLEXING AT TIMES. MODELS ARE IN GENERAL AGREEMENT WITH THE UPPER LEVEL PATTERN THROUGH THE WEEKEND...BUT HAVE DIFFICULTING RESOLVING THE SURFACE FEATURES. SHORT TERM...TONIGHT THROUGH MONDAY... UPPER LOW STILL PROJECTED BY MOST OF THE MODELS TO MOVE NORTHEAST ALONG THE OHIO RIVER OVERNIGHT...GRADUALLY PHASING OUT. THE EXACT TRACK WILL DICTATE THE AMOUNT OF RAIN THAT FALLS. WILL CONTINUE TO HOLD OFF ON A FLASH FLOOD WATCH ACROSS THE SOUTHEAST CWA AS BEST AXIS LOOKS TO BE JUST TO OUR SOUTH. HOWEVER...PWAT VALUES PROJECTED TO RISE TO NEAR 2.3 INCHES...SO AREAS OF HEAVY RAIN ARE DEFINITELY A CONCERN. OVERALL...WILL GO WITH LIKELY POPS TONIGHT FROM ABOUT SPRINGFIELD TO DANVILLE SOUTHWARD. FRONTAL BOUNDARY PROJECTED TO BEGIN A SOUTHWARD PUSH TONIGHT...BUT THE MODELS ARE HAVING DIFFICULTIES RESOLVING HOW FAST THE FRONT WILL MOVE THIS WEEKEND...AS IT BREAKS DOWN THE UPPER RIDGE EXTENDING UP FROM THE GULF COAST. THE GFS IS THE SLOWEST...AND NEVER REALLY GETS IT INTO THE CWA UNTIL LATE SUNDAY...WHEREAS THE OTHER MODELS TEND TO HANG IT UP OVER THE AREA SOMETIME BETWEEN MIDDAY SATURDAY AND MIDDAY SUNDAY. WITH THE BOUNDARY IN THE GENERAL VICINITY...WILL SEE A CONTINUED CHANCE OF THUNDERSTORMS THROUGH MONDAY. PWAT VALUES REMAIN ABOVE 2 INCHES SO SOME OF THE STORMS COULD BE SOME HEAVY RAIN MAKERS THROUGH THE PERIOD. STILL HAVE SOME CONCERNS WITH THE POTENTIAL NEED FOR A HEAT ADVISORY ON SATURDAY. QUITE A SPREAD IN THE MODEL GUIDANCE IN HIGHS...WITH THE NAM GUIDANCE COOLEST AND GFS GUIDANCE SEVERAL DEGREES WARMER. EXTENT OF THE CLOUD COVER WITH THE BOUNDARY WILL PLAY A SIGNIFICANT PART IN WHETHER OR NOT TEMPERATURES GET WARM ENOUGH FOR ADVISORY CRITERIA. WENT WITH A BLEND OF THE TWO... SLIGHTLY LEANING TOWARD THE COOLER VALUES. CURRENTLY FEEL THE SOUTHEAST CWA WOULD HAVE THE BEST SHOT AT REACHING 100F HEAT INDEX...BUT CONFIDENCE IS NOT STRONG ENOUGH THAT CONDITIONS WILL LAST LONG ENOUGH TO WARRANT AN ADVISORY. OVERALL...WARMEST CONDITIONS EXPECTED ON SATURDAY...WITH TEMPERATURES GRADUALLY COOLING INTO MONDAY. LONG TERM...TUESDAY THROUGH FRIDAY... THE UPPER RIDGE CONTINUES TO BREAK DOWN EARLY IN THE WEEK...AS A PIECE OF ENERGY FROM THE NORTHERN STREAM FLOW BREAKS OFF ACROSS THE NORTHERN PLAINS...AND PUSHES EAST TOWARD THE GREAT LAKES. THIS WILL PUSH THE SOUTHERN STREAM FURTHER SOUTH...RESULTING IN WAVES MOVING NORTHEAST INTO THE MIDWEST. TUESDAY LOOKS TO HAVE THE BEST RAIN CHANCES AT THIS POINT...WITH BOTH THE GFS AND ECMWF PUSHING A SURFACE BOUNDARY THROUGH THE AREA TUESDAY NIGHT. AFTER THAT...SIGNS POINT TOWARD THE UPPER RIDGE BUILDING BACK UP THE MISSISSIPPI VALLEY...WITH DRY CONDITIONS AND TEMPERATURES RETURNING INTO THE UPPER 80S AND LOWER 90S BY THE END OF THE WEEK. GEELHART && .AVIATION... ISSUED 1225 PM CDT FRI JUN 11 2010 SCATTERED TO BROKEN CU/CB BASES OF 2.5-5K FT WILL OCCUR THIS AFTERNOON AS ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS DEVELOP AND CONTINUE THROUGH MID EVENING. AREAS SOUTH OF I-72 WILL HAVE BETTER CHANCES OF THUNDERSTORMS WITH HEAVY RAINS...BUT IF THUNDERSTORM OCCUR OVER TAF SITES THEN WILL HAVE AT LEAST MVFR CONDITIONS FOR CEILINGS AND VISIBIBILITIES AND POSSIBLY LOWER FOR VISIBILITIES IF HEAVY RAINS OCCUR. WEAK UPPER LEVEL LOW OVER SOUTHERN MO TO CONTINUE TO WEAKEN AS IT LIFTS NE INTO SOUTHERN IL BY SUNSET AND ACROSS THE OHIO VALLEY TONIGHT AND SAT. MOST OF THE SHOWERS AND THUNDERSTORMS SHOULD PASS SE OF THE CENTRAL IL TAF SITES TONIGHT AFTER SUNSET THOUGH GET CLOSE TO DEC AND CMI. HAVE MVFR VISIBILITIES FROM LIGHT FOG/HAZE OVERNIGHT UNTIL MID MORNING SAT. A FRONTAL BOUNDARY FROM THE WI/MN BORDER INTO NW IA AND WESTERN KS WILL WEAKEN AS IT MOVES SE INTO CENTRAL IL SAT. THIS WILL BRING MORE SCATTERED SHOWERS AND THUNDERSTORMS TO CENTRAL IL SAT ESPECIALLY SAT AFTERNOON. BREEZY SSW WINDS AROUND 15 KTS WITH GUSTS OF 18 TO 25 KTS WILL DIMINISH TO 5 TO 10 KTS BY SUNSET AND BE SW 7 TO 11 KTS SAT. HUETTL && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 238 PM CDT FRI JUN 11 2010 ILZ036-040-041-047-049-050-121200- CASS-FULTON-MASON-MORGAN-SCHUYLER-SCOTT- 238 PM CDT FRI JUN 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS WILL BE POSSIBLE UNTIL SUNSET THIS EVENING. A FEW THUNDERSTORMS COULD BECOME STRONG WITH GUSTY WINDS...FREQUENT LIGHTNING...LOCALLY HEAVY RAINFALL AND POSSIBLE PEA SIZE HAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON SATURDAY. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND STRONG WINDS. IN ADDITION...LOCALLY HEAVY RAINFALL AND INTENSE LIGHTNING WILL BE LIKELY. THE MOST FAVORED TIME PERIOD FOR SEVERE WEATHER WILL BE DURING THE AFTERNOON AND EVENING HOURS. SCATTERED THUNDERSTORMS WILL ALSO BE POSSIBLE SUNDAY THROUGH TUESDAY...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. NO WIDESPREAD SEVERE WEATHER EVENTS ARE ANTICIPATED... HOWEVER SOME ISOLATED STORMS MIGHT PRODUCE HAIL AND GUSTY WINDS. ALTHOUGH RIVER LEVELS WILL FALL VERY SLOWLY...THE ILLINOIS RIVER WILL REMAIN ABOVE FLOOD STAGE FROM HAVANA DOWNSTREAM THROUGH NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ027>031-037-038-042-043-048-051-121200- DE WITT-KNOX-LOGAN-MARSHALL-MCLEAN-MENARD-PEORIA-SANGAMON-STARK- TAZEWELL-WOODFORD- 238 PM CDT FRI JUN 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS WILL OCCUR THROUGH SUNSET ESPECIALLY EAST OF I-55. A FEW THUNDERSTORMS COULD BE STRONG WITH GUSTY WINDS... ...LOCALLY HEAVY RAINFALL...INTENSE LIGHTNING AND PEA SIZE HAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON SATURDAY. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND STRONG WINDS. IN ADDITION...LOCALLY HEAVY RAINFALL AND INTENSE LIGHTNING WILL BE LIKELY. THE MOST FAVORED TIME PERIOD FOR SEVERE WEATHER WILL BE DURING THE AFTERNOON AND EVENING HOURS. SCATTERED THUNDERSTORMS WILL ALSO BE POSSIBLE SUNDAY THROUGH TUESDAY...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. NO WIDESPREAD SEVERE WEATHER EVENTS ARE ANTICIPATED... HOWEVER SOME ISOLATED STORMS MIGHT PRODUCE HAIL AND GUSTY WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ044>046-052>057-061>063-066>068-071>073-121200- CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DOUGLAS- EDGAR-EFFINGHAM-JASPER-LAWRENCE-MACON-MOULTRIE-PIATT-RICHLAND- SHELBY-VERMILION- 238 PM CDT FRI JUN 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. A FEW STORMS COULD BE STRONG WITH GUSTY WINDS OF 45 TO 50 MPH...LOCALLY HEAVY RAINFALL UP TO 1 INCH IN A HALF HOUR... INTENSE LIGHTNING AND POSSIBLE SMALL HAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON SATURDAY. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND STRONG WINDS. IN ADDITION...LOCALLY HEAVY RAINFALL AND INTENSE LIGHTNING WILL BE LIKELY. THE MOST FAVORED TIME PERIOD FOR SEVERE WEATHER WILL BE DURING THE AFTERNOON AND EVENING HOURS. SCATTERED THUNDERSTORMS WILL ALSO BE POSSIBLE SUNDAY THROUGH TUESDAY...ESPECIALLY DURING THE AFTERNOON AND EVENING HOURS. NO WIDESPREAD SEVERE WEATHER EVENTS ARE ANTICIPATED... HOWEVER SOME ISOLATED STORMS MIGHT PRODUCE HAIL AND GUSTY WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. KH
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
224 PM CDT FRI JUN 11 2010
ILZ044>046-112015-
CHAMPAIGN-PIATT-VERMILION-
224 PM CDT FRI JUN 11 2010
...SIGNIFICANT WEATHER ALERT FOR CHAMPAIGN...EASTERN PIATT AND
VERMILION COUNTIES UNTIL 315 PM CDT...
AT 212 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM BEMENT TO PHILO TO 5
MILES EAST OF GEORGETOWN...MOVING NORTH AT 25 MPH.
WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS. A 48 MPH SOUTH
WIND GUST WAS MEASURED AT THE CHAMPAIGN AIRPORT AROUND 215 PM.
FREQUENT CLOUD TO GROUND LIGHTNING AND VERY HEAVY RAINS UP TO 1 INCH
IN LESS THAN A HALF HOUR IS ALSO EXPECTED.
LOCATIONS IMPACTED INCLUDE...
CATLIN...
WHITE HEATH...
CHAMPAIGN...
URBANA...
TILTON...
ST. JOSEPH...
SEYMOUR...
DANVILLE...
RANTOUL...
OTHER LOCATIONS AFFECTED INCLUDE...JAMAICA...SADORUS...IVESDALE...
WILLARD AIRPORT...KICKAPOO STATE PARK AND ROYAL.
PEOPLE NEAR THESE LOCATIONS SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR POSSIBLE WARNINGS...AND BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.
LAT...LON 3990 8754 3990 8859 4040 8842 4041 8795
4049 8794 4049 8753
TIME...MOT...LOC 1922Z 190DEG 23KT 4001 8849 4005 8810
4001 8752
HUETTLThe Evansville,IN radar (KVWX), 80 km away, was scanning. The volume nearest the first event began at 20:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
A 10-inch diameter tree limb was blown down onto a power line causing a power outage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2010Every state in 2010This day in weather historyWarnings in Illinois, June 2010
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: 236559.