An early morning complex of thunderstorms developed north of a warm front in southeast Iowa and northeast Missouri. These thunderstorms moved into a small part of west central Illinois, resulting in heavy rain and flash flooding in Scott County during the morning hours.
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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.
An early morning complex of thunderstorms developed north of a warm front in southeast Iowa and northeast Missouri. These thunderstorms moved into a small part of west central Illinois, resulting in heavy rain and flash flooding in Scott County during the morning hours.
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 14, 2:30 AM CST, 2 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 330 AM CDT TUE JUN 14 2011 .DISCUSSION... ISSUED 330 AM CDT TUE JUN 14 2011 FORECAST CONCERN IS HEAVY RAINS AND SEVERE WEATHER THREAT NEXT FEW DAYS WITH A COUPLE OF MCS/S. THEN ADDRESSING WARMUP DURING FATHERS DAY WEEKEND WITH YET ANOTHER DAILY THREAT OF SHOWERS/THUNDERSTORMS. USED A BLEND OF THE 00Z MODELS WHICH HAVE TRENDED NORTHWARD WITH UPPER LEVEL LOW/TROF THU SO POPS LOOK LOWER OVER CENTRAL/SE IL THU. SHORT TERM...TODAY THROUGH THURSDAY NIGHT. WILL EXTEND THE FLASH FLOOD WATCH THROUGH TONIGHT AND ADD ANOTHER TIER OF COUNTIES NE OF THE 4 ORIGINAL COUNTIES (SCOTT...CASS...MORGAN AND SCHYULER). MCS OVER IA INTO NE MO AND CENTRAL/WESTERN IL PRODUCING WIDESPREAD SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS IN WESTERN IL WHERE 1-2 INCHES HAS ALREADY FALLEN WEST OF A RUSHVILLE TO JACKSONVILLE LINE WITH LOCALLY HIGHER AMOUNTS NEAR THE MS RIVER. INCREASED POPS THIS MORNING ESPECIALLY OVER SW AREAS WHERE HEAVY RAINS WILL BE UNTIL MCS DIMINISH LATER THIS MORNING WITH UP TO AN ADDITIONAL 1-2 INCHES OF RAIN. POPS LOWER TO 30-40% THIS AFTERNOON AS SOME SUNSHINE APPEARS GIVING BELOW NORMAL HIGHS IN THE 70S TODAY. SPC HAS A SLIGHT RISK OF SEVERE STORMS TONIGHT FROM GALESBURG TO EFFINGHAM SW WITH 2ND MCS DEVELOPING AND MOVING OUT OF IA/NORTHERN MO INTO CENTRAL IL WITH HEAVY RAINS AGAIN LIKELY WITH A COUPLE INCHES POSSIBLE SW AREAS. HIGHEST RISK OF SEVERE STORMS IS WEST OF IL OVER CENTRAL/NORTHERN MO TONIGHT WHERE AIR MASS WILL BE MORE UNSTABLE. HAVE LIKELY CHANCES OF SHOWERS/THUNDERSTORMS WED AND SPC HAS SLIGHT RISK OF SEVERE STORMS DURING THE DAY WED OVER SE IL FROM PARIS TO EFFINGHAM SE. HIGHS WED AGAIN IN THE 70S WITH LAWRENCEVILLE NEAR 80F. MODELS HAVE TRENDED FURTHER NORTH WITH UPPER LEVEL LOW MOVING INTO THE GREAT LAKES REGION AND UPPER OHIO VALLEY THU TO HAVE LOWERED POPS TO SLIGHT CHANCE. MORE SUNSHINE EXPECTED THU HELPING TO WARM HIGHS TO NEAR 80F NORTH AND LOWER 80S ELSEWHERE. LONG TERM...FRIDAY THROUGH MONDAY NIGHT. LONG RANGE MODELS/ENSEMBLES CONTINUE TO BUILD UPPER LEVEL RIDGE INTO THE MS VALLEY LATE THIS WEEKEND AND BRINGING A WARM FRONT NORTH INTO THE AREA. AFTER A BRIEF DRY PERIOD THU NIGHT...EXPECT ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS RETURNING BY FRI THRU THIS FATHERS DAY WEEKEND AS TEMPS AND HUMIDITY LEVELS INCREASE TO SUMMERLIKE READINGS IN THE UPPER 80S TO MID 90S EARLY NEXT WEEK. WARM FRONT SHOULD LIFT FAR ENOUGH NORTH MONDAY TO KEEP CENTRAL/SE IL DRY AND HOT. 07 && .AVIATION... ISSUED 1155 PM CDT MON JUN 13 2011 CONVECTION HAS RENEWED JUST TO THE WEST OF THE TAF SITES MONDAY EVENING ON ALONG THE ELEVATED BAROCLINIC ZONE OVER SOUTHERN IA/NORTHERN MO INTO WESTERN IL. STORMS SHOULD REACH PIA/SPI BY 06Z...BUT WEAKEN WITH EASTWARD MOVEMENT AS THE UPPER RIDGE CARRIES THE BRUNT OF THE STRONGER ACTIVITY SOUTHEASTWARD TO THE SOUTH OF BMI/DEC/CMI. STILL SOME CHANCE FOR THUNDER AT THESE LOCATIONS...BUT ON A MORE SCATTERED/UNCERTAIN BASIS. ADDITIONAL STORMS ARE ALSO INCREASING STILL FURTHER UPSTREAM IN IA/MO...AND THIS WILL KEEP THE THREAT FOR CONVECTION OVER THE AREA INTO THE MID MORNING HOURS. HAVE HANDLED THIS WITH AN OVERALL VCTS...WITH PREDOMINATE THUNDER DURING THE MOST LIKELY TIMEFRAME. STILL QUESTIONABLE WHETHER MUCH WILL GET AS FAR EAST AS CMI WHERE THE AIRMASS IS MORE STABLE AND THE AFOREMENTIONED BAROCLINIC ZONE IS WELL WEST. BARRING ANY UNFORSEEN MESOSCALE INTERACTIONS...THERE SHOULD BE A BREAK BEGINNING TUE AFTERNOON. AFTER THAT...MODELS ARE BRINGING THE NEXT CLUSTER OF STORMS AGAIN INTO AT LEAST THE WESTERN HALF OF IL AFTER 00Z WED. 04 && .ILX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH WEDNESDAY MORNING FOR ILZ036-040-041- 047>052. &&
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 Lincoln radar (KILX), 115 km away, was scanning. The volume nearest the first event began at 11:00 UTC.
1 flash flood. Local standard time, as filed.
Rainfall amounts of 3.50 to 5.00, most of which fell between 0500 and 0700 LST, resulted in significant flash flooding across western Scott County. Sandy Creek was out of it's banks, and numerous rural roads were impassable.
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: 328428.