A squall line of thunderstorms sagged southward into southern Illinois, preceded by a gust front that produced isolated damage. The line of storms formed along a weak confluent axis.
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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 PAH wrote it up.
A squall line of thunderstorms sagged southward into southern Illinois, preceded by a gust front that produced isolated damage. The line of storms formed along a weak confluent axis. A very moist and unstable air mass and relatively steep low level lapse rates promoted an organized line of storms capable of gusty winds.
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 Paducah, KY wrote its last area forecast discussion before the first event at Jun 27, 5:51 PM CST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PADUCAH KY 651 PM CDT SUN JUN 27 2010 .UPDATE... REVISED AVIATION DISCUSSION FOR 00Z TAFS. && .DISCUSSION... COLD FRONT WILL APPROACH THE REGION TONIGHT...MOVING THROUGH THE PAH FORECAST AREA VERY LATE TONIGHT INTO EARLY MONDAY AFTERNOON. PREFER THE SREF AND ECMWF SOLUTIONS...WITH BOTH GFS AND NAM DEVELOPING SOMEWHAT UNREASONABLE PRECIP BULLSEYES ACROSS MAINLY NORTHERN PORTIONS OF THE REGION OVERNIGHT. DESPITE THIS...ALL MODELS HAVE PRETTY SIMILAR TIMING OF FRONT/PRECIP AREAS...SO MADE JUST MINOR CHANGES TO GOING FORECAST. KEPT LIKELY POPS NORTHWEST TO GOOD CHANCE POPS SOUTHEAST TONIGHT...THEN LIKELY POPS SOUTHEAST TO GOOD CHANCE POPS NORTHWEST MONDAY MORNING. PRECIP SHOULD TAPER OFF NORTH TO SOUTH MONDAY AFTERNOON...AND WENT DRY BY THIS TIME FOR OUR FAR NORTHERN COUNTIES. KEPT A SLIGHT CHANCE POPS FOR OUR SOUTHEAST COUNTIES EARLY MONDAY EVENING DUE TO SREF STILL HINTING AT SOME VERY LIGHT QPF. WHOLE AREA WILL BE DRY OVERNIGHT MONDAY WITH QUICKLY DECREASING CLOUDS. COOLER AND DRIER AIR WILL GRADUALLY FILTER INTO THE QUAD STATE FROM LATE MONDAY ONWARD AS HIGH PRESSURE BUILDS INTO THE UPPER MIDWEST. TEMPS WILL BE NEAR NORMAL MONDAY INTO TUESDAY...THEN BELOW AVERAGE TEMPS ARE EXPECTED TUESDAY NIGHT. FAIRLY STRAIGHT FORWARD FORECAST FOR DAYS 3-5. THE MEDIUM RANGE MODEL GUIDANCE SHOWS THE LARGE UPPER MIDWEST HIGH PRESSURE SYSTEM MOVING SLOWLY SOUTHEAST ACROSS THE GREAT LAKES REGION. THE FLOW WILL BE ENE OFF THE HIGH...WHICH WILL RESULT IN NEAR TO SLIGHTLY BELOW NORMAL TEMPERATURES AND LOWER MORE COMFORTABLE HUMIDITY LEVELS. NOT MUCH CLOUD COVER EXPECTED EITHER WEDNESDAY THROUGH FRIDAY. SIGNIFICANT DIFFERENCES BEGIN TO SHOW UP DAYS 6-7...WHICH INCLUDES THE JULY 4TH HOLIDAY WEEKEND. THE LATEST 00/06/12 UTC RUNS OF THE GFS BRING THE REMNANTS OF ALEX NORTHWARD...WELL INLAND AND TOWARD THE REGION FROM EAST TX AND THE ARKLATEX REGION. THE GEM HAS A SIMILAR SOLUTION. THE ECMWF IS COMPLETELY DIFFERENT. IT KEEPS THE UPPER RIDGE STRONG...AND DEFLECTS ALEX INTO OLD MEXICO SOUTH OF THE SOUTHERN TIP OF TEXAS. THE GFDL AND HWRF DO BRING ALEX INTO TEXAS...BUT ONLY TOWARD BROWNSVILLE OR ALONG THE RIO GRANDE. WITH SO MUCH UNCERTAINTY...AND THE CONSENSUS KEEPING ALEX TO OUR SOUTH MEANS WE WILL MAINTAIN A DRY FORECAST. SHOULD THE GFS STAY THE COURSE AND OTHER MODELS TEND TOWARD IT...ADJUSTMENTS MAY BE NEEDED. && .AVIATION... VFR CONDITIONS WILL START OFF THE EVENING AS WINDS REMAIN SOUTH/ SOUTHWESTERLY AROUND 10 KNOTS WITH GUSTS TO 15 OR 20 KNOTS EARLY ON. THE APPROACH OF A COLD FRONT WILL RESULT IN AN INCREASING CHANCE FOR THUNDERSTORMS LATE THIS EVENING AND OVERNIGHT. MOST OF THE ACTIVITY SHOULD HOLD OFF UNTIL AFTER 03Z THIS EVENING. FRONTAL PASSAGE ACROSS THE FORECAST TERMINALS WILL OCCUR BETWEEN 13Z AND 19Z MONDAY WITH THE BEST CHANCE OF OCCASIONAL MVFR CEILINGS/VISIBILITIES IN THE 6 HOURS AHEAD OF THE FRONT. WILL ADDRESS SPECIFICS IN THE NEXT ROUTINE TAF ISSUANCE. WINDS WILL SHIFT TO THE NORTHWEST IN THE WAKE OF THE FRONT. && .PAH WATCHES/WARNINGS/ADVISORIES... KY...NONE. MO...NONE. IL...NONE. IN...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PADUCAH KY 441 AM CDT SUN JUN 27 2010 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-281000- JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON- WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE- HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH- WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES- LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL- UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN- MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER- RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID- 441 AM CDT SUN JUN 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT HEAT INDEX VALUES WILL RISE INTO THE 100 TO 105 DEGREE RANGE AGAIN THIS AFTERNOON. ALSO...THUNDERSTORM CHANCES WILL BE INCREASING TODAY AND TONIGHT AS A COLD FRONT MOVES SOUTH INTO THE REGION. THE CHANCE OF SEVERE STORMS IS LOW. HOWEVER...ISOLATED SEVERE STORMS CANNOT BE RULED OUT. FINALLY...MINOR TO MODERATE FLOODING IS OCCURRING ALONG PORTIONS OF THE WABASH AND MISSISSIPPI RIVERS. PLEASE REFER TO THE FLOOD WARNINGS AND STATEMENTS FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE IS A CHANCE OF THUNDERSTORMS AGAIN ON MONDAY...MAINLY OVER WESTERN KENTUCKY AND SOUTHEAST MISSOURI. THE CHANCE OF SEVERE STORMS IS LOW. HOWEVER...ISOLATED SEVERE STORMS CANNOT BE RULED OUT. MINOR TO MODERATE FLOODING WILL CONTINUE ALONG PORTIONS OF THE WABASH AND MISSISSIPPI RIVERS. PLEASE REFER TO THE FLOOD WARNINGS AND STATEMENTS FOR FURTHER DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
The Evansville,IN radar (KVWX), 99 km away, was scanning. The volume nearest the first event began at 02:07 UTC.
1 tornado, 1 thunderstorm wind. Local standard time, as filed.
A brief tornado was witnessed by a trained spotter. The tornado touched down, went up, and then briefly touched down again. Metal sheeting was torn off a horse barn and a storage barn.
Large tree limbs were blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2010Every state in 2010This day in weather historyThe tornado archive for Illinois, 2010Warnings 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: 230782, 230789.