A persistent frontal boundary interacting with a very moist airmass led to periods of showers and thunderstorms across southeast Illinois early in the morning on June 19th. One of the storms produced wind damage across Clay County.
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.
A persistent frontal boundary interacting with a very moist airmass led to periods of showers and thunderstorms across southeast Illinois early in the morning on June 19th. One of the storms produced wind damage across Clay County.
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 19, 2:00 AM CST, 2 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 300 AM CDT SUN JUN 19 2011 .DISCUSSION... ISSUED 300 AM CDT SUN JUN 19 2011 SHORT TERM...TODAY THROUGH TUESDAY MCS CURRENTLY ONGOING OVER CENTRAL/SOUTHERN MISSOURI IS BEGINNING TO SHOW SIGNS OF EVOLVING INTO A BOWING STRUCTURE AS IT ACCELERATES EASTWARD ACROSS FAR SOUTHERN ILLINOIS AND WESTERN KENTUCKY OVER THE NEXT FEW HOURS. BASED ON RADAR/SATELLITE LOOPS...IT APPEARS BULK OF THE HEAVY RAINFALL WITH THIS SYSTEM WILL REMAIN JUST SOUTH OF THE KILX CWA EARLY THIS MORNING. AS SUCH...HAVE DECIDED TO ALLOW THE FLASH FLOOD WATCH FOR OUR SOUTHERN PERIPHERY TO EXPIRE AT 12Z. WILL HOWEVER CARRY LIKELY POPS ALONG AND SOUTH OF I-70...AS NORTHERN EDGE OF STORM COMPLEX WILL LIKELY IMPACT THIS AREA. FURTHER NORTH...WILL ONLY MENTION LOW CHANCE POPS ACROSS THE REMAINDER OF THE CWA. ONCE THE EARLY MORNING MCS PUSHES FURTHER EASTWARD INTO THE OHIO RIVER VALLEY...SUBSIDENCE IN ITS WAKE SHOULD LARGELY SUPPRESS ADDITIONAL CONVECTIVE DEVELOPMENT FOR THE BALANCE OF THE DAY. HAVE THEREFORE ONLY MENTIONED SLIGHT CHANCE POPS FOR THE AFTERNOON. STILL PLENTY OF QUESTIONS CONCERNING POTENTIAL NOCTURNAL CONVECTION TONIGHT. AS DEEP UPPER TROUGH DIGS OVER THE ROCKIES...WEAK RIDGING WILL DEVELOP DOWNSTREAM ACROSS THE MIDWEST. THIS WILL HELP SHIFT THE PERSISTENT FRONTAL BOUNDARY THAT HAS PLAGUED THE REGION FOR SEVERAL DAYS FURTHER NORTHWARD INTO CENTRAL ILLINOIS. DESPITE PRESENCE OF FRONT...STRONGEST LOW-LEVEL JET WILL LIKELY BE FOCUSED FURTHER WEST IN ADVANCE OF THE APPROACHING UPPER TROUGH. AS A RESULT...DO NOT ANTICIPATE WIDESPREAD STORMS ACROSS THE AREA TONIGHT. WILL THEREFORE ONLY CARRY CHANCE POPS ACROSS THE BOARD...AS WEAKER LOW-LEVEL INFLOW INTERACTS WITH BOUNDARY. WARM FRONT WILL LIFT SLOWLY NORTHWARD ON MONDAY...SO HAVE OPTED TO MAINTAIN LOW CHANCE POPS ACROSS THE NORTHERN HALF OF THE CWA IN CLOSER PROXIMITY TO THE BEST FORCING. THINK THIS CHANCE WILL BE FOCUSED PRIMARILY IN THE MORNING...WITH HOT/DRY CONDITIONS EXPECTED EVERYWHERE BY AFTERNOON. AS ROCKIES UPPER TROUGH LIFTS SLOWLY NORTHEASTWARD...IT WILL GRADUALLY DRAG A COLD FRONT TOWARD CENTRAL ILLINOIS. MODEL CONSENSUS KEEPS FRONT WELL WEST OF THE AREA THROUGH MONDAY NIGHT...THEN ADVANCES IT FURTHER EASTWARD ON TUESDAY. VERY UNSTABLE AIRMASS IN ADVANCE OF THE BOUNDARY CHARACTERIZED BY LIFTED INDEX VALUES OF -8 TO -10C WILL SUPPORT THE POTENTIAL FOR STRONG TO SEVERE THUNDERSTORMS TUESDAY AFTERNOON AND EVENING. LONG TERM...WEDNESDAY THROUGH SATURDAY COLD FRONT WILL SLOWLY PUSH THROUGH CENTRAL ILLINOIS ON WEDNESDAY...HOWEVER PRIMARY MOISTURE/INSTABILITY AXIS WILL BE LOCATED FURTHER EAST AND SOUTH ACROSS THE OHIO RIVER VALLEY. MODELS ARE NOT PRODUCING MUCH IN THE WAY OF PRECIP...BUT AM RELUCTANT TO GO TOTALLY DRY UNTIL FRONT PUSHES THROUGH. HAVE THEREFORE MAINTAINED LOW CHANCE POPS ACROSS THE E/SE THROUGH WEDNESDAY. AFTER THAT...SLOW-MOVING UPPER LOW WILL MEANDER ACROSS THE UPPER MIDWEST/GREAT LAKES...ENSURING COOLER AND DRIER WEATHER FOR THURSDAY THROUGH SATURDAY. BARNES && .AVIATION... ISSUED 1202 AM CDT SUN JUN 19 2011 MCS CURRENTLY GETTING ORGANIZED OVER SOUTHWESTERN MO LOOKS LIKE IT WILL MIGRATE EASTWARD OVERNIGHT AND STAY PRETTY MUCH SOUTH OF THE TAF SITES. OTHER ACTIVITY OVER CENTRAL/EASTERN MO MAY SKIRT THE SPI-DEC-CMI TERMINALS...HOWEVER THE AIRMASS OVER IL IS MORE HOSTILE TO ORGANIZED CONVECTION. LINEAR EXTRAPOLATION SUGGESTS A ROUGH ARRIVAL TIME AT SPI OF 0645Z ASSUMING THE STORM NOW CROSSING THE MS RIVER SOUTHWEST OF PPQ SURVIVES. WILL USE THIS TIMING AND GIVE SPI AND DEC A TEMPO FOR THUNDER 06Z-09Z...AND CMI A VCTS FOR 10-14Z. RADAR SIMULATIONS FROM THE HRRR AND WRK-NMM MODELS BOTH KEEP PRECIPITATION SOUTH OF PIA/BMI. THERE WILL ALSO EXIST A RELATIVE LULL IN PRECIPITATION ON SUNDAY DUE TO SUBSIDENCE IN THE WAKE OF TONIGHTS MCS. THEREFORE WILL INDICATE A DRY TAF AFTER 14Z SUN AND CONTINUING THROUGH 06Z MON. WILL INCLUDE SOME 5SM BR AROUND SUNRISE WITH WEAK WINDS RICH SURFACE MOISTURE...ALTHOUGH INCREASING HIGH CLOUDS MAY MITIGATE THIS SOMEWHAT. 04 && .ILX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH UNTIL 7 AM CDT THIS MORNING FOR ILZ049>052-061- 066-067-071>073. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 343 PM CDT SAT JUN 18 2011 ILZ029-031-036-037-040-041-047-191100- CASS-FULTON-MASON-PEORIA-SCHUYLER-TAZEWELL-WOODFORD- 343 PM CDT SAT JUN 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT A SERIES OF THUNDERSTORM COMPLEXES WILL MOVE ACROSS THE AREA THROUGH TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL...PARTICULARLY LATER THIS EVENING AND OVERNIGHT. FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER FROM PEORIA AND DOWN STREAM FOR THE NEXT SEVERAL DAYS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER COMPLEX OF THUNDERSTORMS IS POSSIBLE ON SUNDAY AS A FRONTAL SYSTEM LINGERS OVER THE AREA. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY SEVERE WEATHER THREAT. AFTER A BRIEF BREAK ON MONDAY...A WEATHER SYSTEM WILL BRING THUNDERSTORM CHANCES BACK TO THE REGION FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. ILZ049-050-191100- MORGAN-SCOTT- 343 PM CDT SAT JUN 18 2011 ...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH SUNDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT A SERIES OF THUNDERSTORM COMPLEXES WILL MOVE ACROSS THE AREA THROUGH TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL...PARTICULARLY LATER THIS EVENING AND OVERNIGHT. FLOODING WILL CONTINUE ALONG THE ILLINOIS RIVER FROM PEORIA AND DOWN STREAM FOR THE NEXT SEVERAL DAYS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER COMPLEX OF THUNDERSTORMS IS POSSIBLE ON SUNDAY AS A FRONTAL SYSTEM LINGERS OVER THE AREA. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY SEVERE WEATHER THREAT. AFTER A BRIEF BREAK ON MONDAY...A WEATHER SYSTEM WILL BRING THUNDERSTORM CHANCES BACK TO THE REGION FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. ILZ052-061-066-067-071>073-191100- CHRISTIAN-CLAY-EFFINGHAM-JASPER-LAWRENCE-RICHLAND-SHELBY- 343 PM CDT SAT JUN 18 2011 ...FLASH FLOOD WATCH IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH SUNDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT A SERIES OF THUNDERSTORM COMPLEXES WILL MOVE ACROSS THE AREA THROUGH TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL...PARTICULARLY LATER THIS EVENING AND OVERNIGHT. MANY AREAS ALONG AND SOUTH OF INTERSTATE 72 HAVE ALREADY HAD ANYWHERE FROM ONE TO FIVE INCHES OF RAIN THIS MORNING...ESPECIALLY AREAS WEST OF INTERSTATE 55. THESE LOCATIONS HAVE SATURATED GROUND...PONDING...AND FLOODING. ANY ADDITIONAL RAINFALL WILL ENHANCE THE THREAT FOR FLASH FLOODING THROUGH THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER COMPLEX OF THUNDERSTORMS IS POSSIBLE ON SUNDAY AS A FRONTAL SYSTEM LINGERS OVER THE AREA. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY SEVERE WEATHER THREAT. AFTER A BRIEF BREAK ON MONDAY...A WEATHER SYSTEM WILL BRING THUNDERSTORM CHANCES BACK TO THE REGION FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. ILZ027-028-030-038-042>046-048-053>057-062-063-068-191100- CHAMPAIGN-CLARK-COLES-CRAWFORD-CUMBERLAND-DE WITT-DOUGLAS-EDGAR- KNOX-LOGAN-MACON-MARSHALL-MCLEAN-MENARD-MOULTRIE-PIATT-STARK- VERMILION- 343 PM CDT SAT JUN 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT A SERIES OF THUNDERSTORM COMPLEXES WILL MOVE ACROSS THE AREA THROUGH TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL...PARTICULARLY LATER THIS EVENING AND OVERNIGHT. MANY AREAS ALONG AND SOUTH OF INTERSTATE 72 HAVE ALREADY HAD ANYWHERE FROM ONE TO FIVE INCHES OF RAIN THIS MORNING...ESPECIALLY AREAS WEST OF INTERSTATE 55. THESE LOCATIONS HAVE SATURATED GROUND...PONDING...AND FLOODING. ANY ADDITIONAL RAINFALL WILL ENHANCE THE THREAT FOR FLASH FLOODING THROUGH THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER COMPLEX OF THUNDERSTORMS IS POSSIBLE ON SUNDAY AS A FRONTAL SYSTEM LINGERS OVER THE AREA. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY SEVERE WEATHER THREAT. AFTER A BRIEF BREAK ON MONDAY...A WEATHER SYSTEM WILL BRING THUNDERSTORM CHANCES BACK TO THE REGION FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. ILZ051-191100- SANGAMON- 343 PM CDT SAT JUN 18 2011 ...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT A SERIES OF THUNDERSTORM COMPLEXES WILL MOVE ACROSS THE AREA THROUGH TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL...PARTICULARLY LATER THIS EVENING AND OVERNIGHT. MANY AREAS ALONG AND SOUTH OF INTERSTATE 72 HAVE ALREADY HAD ANYWHERE FROM ONE TO FIVE INCHES OF RAIN THIS MORNING...ESPECIALLY AREAS WEST OF INTERSTATE 55. THESE LOCATIONS HAVE SATURATED GROUND...PONDING...AND FLOODING. ANY ADDITIONAL RAINFALL WILL ENHANCE THE THREAT FOR FLASH FLOODING THROUGH THE OVERNIGHT HOURS. IN ADDITION...INCREASED RELEASES FROM SPAULDING DAME AT LAKE SPRINGFIELD WILL SEND INCREASED FLOW TO THE SUGAR CREEK DOWNSTREAM FROM THE DAM. MANY POTENTIAL WATER ISSUES FOR THE AREA ARE CREATING A DANGEROUS FLOOD THREAT. STAY VERY ALERT TO CHANGING CONDITIONS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ANOTHER COMPLEX OF THUNDERSTORMS IS POSSIBLE ON SUNDAY AS A FRONTAL SYSTEM LINGERS OVER THE AREA. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY SEVERE WEATHER THREAT. AFTER A BRIEF BREAK ON MONDAY...A WEATHER SYSTEM WILL BRING THUNDERSTORM CHANCES BACK TO THE REGION FOR TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. HJS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
109 AM CDT SUN JUN 19 2011
ILZ049-050-190715-
MORGAN-SCOTT-
109 AM CDT SUN JUN 19 2011
...SIGNIFICANT WEATHER ADVISORY FOR MORGAN AND SCOTT COUNTIES UNTIL
215 AM CDT...
AT 106 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR WINCHESTER...MOVING EAST AT 25 MPH.
PENNY SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
CHAPIN...
MURRAYVILLE...
WOODSON...
JACKSONVILLE...
FRANKLIN...
ALEXANDER...
OTHER LOCATIONS AFFECTED INCLUDE...RIGGSTON...MERRITT...LYNNVILLE...
SOUTH JACKSONVILLE...LAKE JACKSONVILLE AND JACKSONVILLE MUNICIPAL
AIRPORT.
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 3988 9021 3988 9000 3979 9000 3978 8998
3976 8998 3971 8998 3966 8996 3960 8995
3953 9048 3973 9057
TIME...MOT...LOC 0609Z 252DEG 24KT 3965 9043
AUTENPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
442 AM CDT SUN JUN 19 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0436 AM HEAVY RAIN EFFINGHAM 39.12N 88.55W
06/19/2011 M1.33 INCH EFFINGHAM IL MESONET
RAINFALL TOTAL IN THE PAST 30 MINUTES.
&&
JRPThe Evansville,IN radar (KVWX), 83 km away, was scanning. The volume nearest the first event began at 09:58 UTC.
1 thunderstorm wind. Local standard time, as filed.
A 16-inch diameter tree was blown down at the intersection of Route 45 and Route 50 just west of Flora.
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: 328643.