An approaching warm front triggered clusters of thunderstorms from west-central Illinois southeastward into the Ohio River Valley during the afternoon and evening of June 13th. A few of these storms produced damaging wind gusts along and southwest of a Winchester to Flora line.
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.
An approaching warm front triggered clusters of thunderstorms from west-central Illinois southeastward into the Ohio River Valley during the afternoon and evening of June 13th. A few of these storms produced damaging wind gusts along and southwest of a Winchester to Flora line.
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 13, 2:32 PM CST, 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 332 PM CDT MON JUN 13 2011 .DISCUSSION... ISSUED 332 PM CDT MON JUN 13 2011 MODELS CONTINUE TO INDICATE MULTIPLE MCS EVENTS OVER NEXT COUPLE OF DAYS MOVING ACROSS THE CWA. SO PLENTY OF CHALLENGES WITH THIS PACKAGE AS MODELS TRY TO GET A HANDLE ON PCPN CHANCES THROUGH THE PERIOD. A BLEND OF THE SHORT TERM MODELS LOOKS GOOD FOR NOW. THE LONG TERM CONCERNS REMAIN THE SAME AS BEFORE...WITH MORE PCPN CHANCES THROUGH MOST OF THE PERIOD. TEMPS WILL ALSO BE A CONCERN AS THE MODELS JUST NOW FORECASTING A WARM UP INTO THE HOT AND HUMID CONDITIONS FOR END OF NEXT WEEKEND AND BEGINNING OF NEXT WEEK. SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT STORMS ALREADY MOVING INTO THE WESTERN PARTS OF THE CWA ARE LEFTOVERS FROM MCS THAT MOVED ACROSS IOWA EARLY THIS MORNING. STORMS ARE MOVING INTO A LESS FAVORABLE ENVIRONMENT THIS AFTERNOON...THOUGH CONTINUING TO MOVE SOUTHEAST ALONG WITH THE 850-300MB WINDS/THICKNESS PATTERN. CURRENTLY NOT EXPECTING THESE TO BE SEVERE THIS EVENING...BUT WILL ACCOUNT FOR THESE IN NEW FORECAST. THEN MAIN CONCERN WILL RETURN TO SOUTHERN IOWA AND NORTHERN MO WHERE ANOTHER MCS IS EXPECTED TO DEVELOP OVERNIGHT AND THEN MOVE INTO CENTRAL ILLINOIS EARLY TOMORROW MORNING. 850 AND 700 OMEGA ARE BULLS-EYED IN SAID AREA ALONG WITH BEST MOISTURE CONVERGENCE AND UPPER LEVEL DIVERGENCE. CORFIDI VECTORS THEN POINT TO MOVEMENT TO THE EAST THEN SOUTHEAST INTO THE WESTERN PORTIONS OF THE CWA. IN ADDITION...PW VALUES ARE AROUND 1.7-1.9 OVERNIGHT AND INTO CENTRAL ILLINOIS...SO HEAVY RAINFALL WILL BE LIKELY. AXIS OF HEAVIEST RAINFALL WILL BE ACROSS WESTERN ILLINOIS...ALONG THE MISSISSIPPI RIVER SO WILL BE ISSUING A FLASH FLOOD WATCH FOR 4 WESTERN COUNTIES IN CWA. LOW LEVEL JET AND MOISTURE CONVERGENCE WILL REMAIN OVER THE AREA DURING THE DAY TOMORROW SO THERE WILL REMAIN A FOCUS FOR ADDITIONAL THUNDERSTORMS DURING THE DAY AND INTO TOMORROW EVENING. SFC HIGH PRSS AREA STILL ENTRENCHED OVER GRT LKS REGION THROUGH TOMORROW SO DO NOT SEE MUCH MOVEMENT OF ANY BOUNDARIES/CONVERGENT AREAS TO THE EAST. SO BELIEVE ANOTHER MCS WILL DEVELOP OVER CENTRAL IL TOMORROW NIGHT AND THEN MOVE EAST/SOUTHEAST OUT OF THE AREA. HEAVY RAINFALL WILL AGAIN BE POSSIBLE WITH THIS MCS AND ANOTHER FLASH FLOOD WATCH MAY BE NEEDED FOR PARTS FOR THE CWA TOMORROW NIGHT. WILL LET LATER SHIFTS DEAL WITH THIS ONCE FIRST MCS IS DONE TOMORROW. THUNDERSTORMS WILL CONTINUE INTO WED AS A MODELS FORECAST A LOW PRSS AREA SLOWLY MOVING ACROSS THE AREA DURING THE DAY. APPEARS THE GRT LKS HIGH PRSS AREA WILL FINALLY WEAKEN ENOUGH TO ALLOW FOR THIS SYSTEM TO MOVE EAST WEDNESDAY. THIS WILL FINALLY PUSH CHANCES OF PCPN TO THE EAST BY THURSDAY. THE ONLY DRY PERIOD APPEARS TO BE THURSDAY NIGHT...AS THIS TIME PERIOD WILL BE IN BETWEEN SYSTEMS. TEMPERATURES WILL BE TEMPERED DUE TO THE CLOUD COVER AND PCPN THROUGH THE PERIOD. LONG TERM...FRIDAY THROUGH MONDAY UNSETTLED WEATHER WILL CONTINUE THROUGH THE PERIOD AS THE FRONTAL SYSTEM THAT IS SETUP TO OUR SOUTH AFTER SEVERAL DAYS OF MCS OVER THE REGION...BEGINS TO MOVE BACK NORTH AND STALLS OUT OVER THE AREA. THIS FRONT WILL BE THE FOCUS FOR MOVE THUNDERSTORMS THE END OF THE WEEK AND INTO THE WEEKEND. CHANCES WILL BEGIN IN THE SOUTHWEST PARTS OF THE CWA AND THEN PROGRESS NORTHWARD BY THE WEEKEND. MODELS ARE NOW SHOWING THIS FRONT LIFTING NORTHWARD THROUGH THE AREA BY THE END OF THE WEEKEND AS THE MID LEVEL RIDGE BUILDS ACROSS THE MIDWEST. THIS WILL BRING DRY AND MUCH WARMER TEMPS. AUTEN && .AVIATION... ISSUED 1254 PM CDT MON JUN 13 2011 COMPLEX AVIATION FORECAST EXISTS OVER THE NEXT 24 HOURS...AS CENTRAL ILLINOIS BEGINS TO FALL UNDER THE INFLUENCE OF AN APPROACHING WARM FRONT. ONGOING CLUSTER OF THUNDERSTORMS CURRENTLY ACROSS CENTRAL IOWA WILL EVENTUALLY TAKE A TURN TO THE E/SE AND WEAKEN AS IT MOVES INTO A MORE STABLE/LESS SHEARED ENVIRONMENT ACROSS CENTRAL ILLINOIS. THINK PRECIP WILL DISSIPATE BEFORE IT REACHES ANY OF THE KILX TERMINALS...HOWEVER A MID-LEVEL OVERCAST WILL SPREAD ACROSS THE AREA FROM WEST TO EAST THIS AFTERNOON BETWEEN 20Z AND 23Z. MAY SEE A FEW LINGERING SHOWERS COME INTO THE ILLINOIS RIVER VALLEY SOUTH OF PEORIA AND THESE MAY EVENTUALLY APPROACH KSPI BEFORE COMPLETELY DRYING UP. HAVE THEREFORE INCLUDED VCSH AT KSPI BETWEEN 21Z AND 00Z. AFTER THAT...ATTENTION TURNS TO NOCTURNAL CONVECTION EXPECTED TO FIRE ON THE NOSE OF THE LOW-LEVEL JET TONIGHT. BASED ON MCS PARAMETERS/JET ORIENTATION...THINK ANOTHER CLUSTER OF STORMS WILL DEVELOP ACROSS SOUTHERN IOWA/NORTHERN MISSOURI LATER THIS EVENING...THEN TRACK E/SE INTO CENTRAL ILLINOIS OVERNIGHT. EXACT TRACK/TIMING OF CONVECTION IS STILL UNCERTAIN...SO HAVE ONLY INCLUDED VCTS IN THE TAFS AT THIS TIME. MOST FAVORABLE TIME FOR STORMS WILL BE AFTER 05Z AT KPIA...THEN FURTHER EAST AT KCMI AFTER 09Z. WINDS WILL INITIALLY BE FROM THE E/NE AT AROUND 10KT THIS AFTERNOON...THEN WILL BECOME E/SE AND INCREASE INTO THE 10 TO 15KT RANGE BY TUESDAY MORNING. BARNES && .ILX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON FOR ILZ040-047-049-050. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 304 PM CDT MON JUN 13 2011 ILZ027>031-036-037-040-041-047-049-050-141100- CASS-FULTON-KNOX-MARSHALL-MASON-MORGAN-PEORIA-SCHUYLER-SCOTT- STARK-TAZEWELL-WOODFORD- 304 PM CDT MON JUN 13 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS WILL DEVELOP ACROSS THE REGION TONIGHT. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HOWEVER HEAVY RAINFALL...GUSTY WINDS...AND SMALL HAIL WILL BE LIKELY WITH THE STRONGER STORMS. FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER FOR THE NEXT SEVERAL DAYS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A FRONTAL BOUNDARY WILL REMAIN IN THE REGION INTO THURSDAY...AND WILL BE ACCOMPANIED BY A PERIODIC THUNDERSTORM RISK. AFTER A BRIEF BREAK ON FRIDAY...UNSETTLED WEATHER AND THUNDERSTORM CHANCES WILL RETURN FOR THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ038-042>046-048-051>057-061-141100- CHAMPAIGN-CHRISTIAN-COLES-DE WITT-DOUGLAS-EDGAR-LOGAN-MACON- MCLEAN-MENARD-MOULTRIE-PIATT-SANGAMON-SHELBY-VERMILION- 304 PM CDT MON JUN 13 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND EAST CENTRAL ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS WILL DEVELOP ACROSS THE REGION TONIGHT. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HOWEVER HEAVY RAINFALL...GUSTY WINDS...AND SMALL HAIL WILL BE LIKELY WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A FRONTAL BOUNDARY WILL REMAIN IN THE REGION INTO THURSDAY...AND WILL BE ACCOMPANIED BY A PERIODIC THUNDERSTORM RISK. AFTER A BRIEF BREAK ON FRIDAY...UNSETTLED WEATHER AND THUNDERSTORM CHANCES WILL RETURN FOR THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ062-063-066>068-071>073-141100- CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND- 304 PM CDT MON JUN 13 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT THUNDERSTORMS WILL DEVELOP ACROSS THE REGION TONIGHT. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HOWEVER HEAVY RAINFALL...GUSTY WINDS...AND SMALL HAIL WILL BE LIKELY WITH THE STRONGER STORMS. FLOODING WILL SUBSIDE ALONG THE WABASH RIVER BY MIDWEEK. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A FRONTAL BOUNDARY WILL REMAIN IN THE REGION INTO THURSDAY...AND WILL BE ACCOMPANIED BY A PERIODIC THUNDERSTORM RISK. AFTER A BRIEF BREAK ON FRIDAY...UNSETTLED WEATHER AND THUNDERSTORM CHANCES WILL RETURN FOR THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. BARNES
The St Louis radar (KLSX), 105 km away, was scanning. The volume nearest the first event began at 21:26 UTC.
2 thunderstorm wind. Local standard time, as filed.
A large tree limb was blown down onto Commercial Street in Winchester.
A large tree limb was blown down onto a car along Route 50 west of Flora. 3 people inside the car were injured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2011Every state in 2011This day in weather historyWarnings in Illinois, June 2011
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: 318271, 318272.