Thunderstorms developed ahead of upper level impulses over far southeast Iowa and southwest Missouri. The atmosphere became quite unstable, with mixed layer CAPE values approaching 3000 late in the afternoon.
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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.
Thunderstorms developed ahead of upper level impulses over far southeast Iowa and southwest Missouri. The atmosphere became quite unstable, with mixed layer CAPE values approaching 3000 late in the afternoon. This instability, along with 20 to 30 knots of deep layer wind shear, favored a few multicell severe storms with damaging 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 2, 1:55 PM CST, 2 hours 36 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PADUCAH KY 255 PM CDT TUE JUN 2 2009 .SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/... IN THE NEAR TERM...THE MAIN CONCERN IS SCATTERED CONVECTION THAT DEVELOPED OVER MISSOURI AND ILLINOIS EARLY THIS AFTERNOON. THESE STORMS WERE TRIGGERED BY STRONG DAYTIME HEATING AHEAD OF A SURFACE COLD FRONT THAT WAS DRAPED ACROSS NORTHERN MISSOURI AND CENTRAL ILLINOIS. THE FRONT WILL SAG SLOWLY SOUTHWARD THIS EVENING...REACHING A KMVN TO KFAM LINE AROUND 06Z. THE APPROACH OF THE COLD FRONT /AND A WEAK MID LEVEL SHORTWAVE OVER THE PLAINS/ WILL BE ENOUGH TO SUSTAIN CONVECTION WELL INTO THE NIGHT. AS FAR AS SEVERE POTENTIAL...THERE SHOULD BE A SLOW DECREASE IN UPDRAFT STRENGTH AFTER 01Z WITH LOSS OF DAYTIME HEATING. UNTIL THEN...MULTICELL CLUSTERS WILL POSE A RISK OF SHORT DURATION SEVERE EVENTS. HEAVY RAIN WILL BECOME MORE OF A CONCERN LATER IN THE EVENING AND DURING THE NIGHT. HIGH PW VALUES AND A WEAK LOW LEVEL JET /ALONG WITH THE SLOW MOVING BOUNDARY/...INDICATE HEAVY RAIN POTENTIAL IS HIGH. WILL ADD HEAVY RAIN WORDING TO SOME FORECAST ZONES. ON WEDNESDAY...THE FRONT WILL CONTINUE TO SAG SLOWLY SOUTH ACROSS THE LOWER OHIO VALLEY. THE 12Z NAM IS SOMEWHAT OF AN OUTLIER BY ACCELERATING THE FRONT. USED THE 09Z SREF FOR FRONTAL TIMING...WHICH TAKES THE FRONT TO KEVV/KCGI LINE AT 18Z. WITH THIS TIMING...EXPECT SURFACE BASED INSTABILITY TO ONCE AGAIN BECOME QUITE STRONG IN WEST KENTUCKY AND PARTS OF SE MISSOURI. THE DETERMINING FACTOR FOR SEVERE POTENTIAL WILL BE THE EXTENT OF MORNING MCS ACTIVITY AND ITS EFFECT ON DIURNAL HEATING. ANY SEVERE CONVECTION WOULD LIKELY ORIGINATE FROM MULTICELL CLUSTERS...SINCE SHEAR PROFILES WILL BE SIMILAR TO TODAY. ON WEDNESDAY NIGHT AND THURSDAY...A WEAK SURFACE LOW WILL MOVE EAST ALONG THE FRONT. THE LOW CENTER WILL TRACK ACROSS NORTHERN TENNESSEE...PLACING THE ENTIRE FORECAST AREA ON THE COOL SIDE OF THE TRACK. A SWATH OF HEAVY RAIN IS POSSIBLE ON THE NORTH SIDE OF THE LOW...AS INDICATED BY HPC QPF GUIDANCE. UP TO 3 INCHES OF RAIN IS SHOWN BY HPC OVER PARTS OF SE MISSOURI WEDNESDAY AFTERNOON AND NIGHT OVER THE UPSLOPE PORTIONS OF THE OZARK FOOTHILLS. MODEL TRENDS WILL NEED TO BE MONITORED...SINCE THIS AMOUNT OF RAIN WOULD CAUSE SIGNIFICANT PROBLEMS IF WIDESPREAD HEAVY RAIN OCCURS TONIGHT. SHOWERS WILL EXIT THE FORECAST AREA ON THURSDAY AS THE LOW MOVES WELL TO THE SOUTHEAST. TEMPERATURES WILL BE UNSEASONABLY COOL THURSDAY AND THURSDAY NIGHT. .LONG TERM /FRIDAY THROUGH TUESDAY/... IN THE WAKE OF THE MID WEEK SYSTEM...500 MB RIDGING WILL DEVELOP OVER THE MISSISSIPPI VALLEY REGION FRIDAY. IN THE LOW LEVELS...WEAK NORTHEAST WINDS WILL BRING DRY AIR AND SEASONABLE TEMPERATURES FOR FRIDAY. A PROLONGED PERIOD OF DEEP SOUTHWEST FLOW WILL BEGIN ON SATURDAY AND CONTINUE THROUGH AT LEAST EARLY NEXT WEEK. THE LARGE SCALE SYNOPTIC PATTERN WILL FEATURE A STRONG MID LEVEL RIDGE NEAR THE GULF COAST...WITH A BAND OF STRONGER SOUTHWEST WINDS FROM THE SOUTHERN PLAINS TO THE GREAT LAKES. UNDER THE STRONGER FLOW ALOFT...A SURFACE FRONT WILL MEANDER ACROSS THE CENTRAL STATES. GENERALLY FOLLOWED HPC THINKING REGARDING THE MOVEMENT OF THE SURFACE FRONT AND THE TIMING AND AMPLITUDE OF SHORTWAVE TROUGHS IN THE SOUTHWEST FLOW ALOFT. A FLATTER /LESS AMPLIFIED/ LOOK TO THE FLOW PATTERN IS EXPECTED AS A RESULT OF THE PERSISTENT STRONG RIDGING OVER THE DEEP SOUTH. THIS IN TURN WILL FAVOR SLOWER FRONTAL MOVEMENT. A WARM FRONT INITIALLY OVER SOUTHERN INDIANA AND ILLINOIS SATURDAY WILL LIFT NORTH OVER THE WEEKEND. THIS FRONT WILL THEN RETURN VERY SLOWLY SOUTHEAST MONDAY...REACHING THE LOWER OHIO VALLEY TUESDAY. MAINLY DRY AND VERY WARM CONDITIONS OVER THE WEEKEND WILL GIVE WAY TO INCREASING RAIN CHANCES MONDAY INTO TUESDAY. TEMPERATURES WILL BE UNSEASONABLY WARM...THOUGH CLOUDS AND SOME PRECIP ON MONDAY THROUGH TUESDAY SHOULD DAMPEN THE DIURNAL RANGE. && .AVIATION... CURRENT THINKING IS THAT CONVECTION WILL REMAIN SCATTERED AT AND NEAR THE TAF SITES THROUGH THE TAF PERIOD. FOR THIS REASON...FORECAST WILL REMAIN VFR. HOWEVER...ANY LARGE SCALE COMPLEX WOULD HAVE THE POTENTIAL TO PRODUCE LOWER CONDITIONS THAN INDICATED. && .PAH WATCHES/WARNINGS/ADVISORIES... KY...NONE. MO...NONE. IL...NONE. IN...NONE. && SHORT/LONG TERM...MY AVIATION...JAP/MY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PADUCAH KY 354 PM CDT TUE JUN 2 2009 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-032100- 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- 354 PM CDT TUE JUN 2 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING...MAINLY NORTH OF A LINE FROM CAPE GIRARDEAU MISSOURI TO OWENSBORO KENTUCKY. ISOLATED DAMAGING WIND GUSTS AND LARGE HAIL ARE THE PRIMARY HAZARDS. SCATTERED THUNDERSTORMS TONIGHT WILL PRODUCE LOCALLY HEAVY RAIN. THE CULPRIT FOR THESE STORMS IS A COLD FRONT MOVING SLOWLY SOUTH ACROSS NORTHERN MISSOURI AND CENTRAL ILLINOIS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS ARE LIKELY ON WEDNESDAY AND WEDNESDAY NIGHT. THERE IS THE POTENTIAL FOR ISOLATED SEVERE THUNDERSTORMS DURING THAT PERIOD...ESPECIALLY OVER WESTERN KENTUCKY AND EXTREME SOUTHEAST MISSOURI. HOWEVER...THE POTENTIAL FOR HEAVY RAINFALL WILL BE THE PRIMARY THREAT. RAINFALL AMOUNTS WEDNESDAY AFTERNOON AND NIGHT COULD BE IN THE ONE TO THREE INCH RANGE OVER SOUTHEAST MISSOURI AND EXTREME WESTERN KENTUCKY. THE CHANCE FOR ISOLATED THUNDERSTORMS RETURNS SATURDAY AND SUNDAY...FOLLOWED BY A HIGHER CHANCE MONDAY THROUGH TUESDAY. ISOLATED SEVERE STORMS CANNOT BE RULED OUT DURING THAT TIME. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF SKYWARN SPOTTERS MAY BE REQUESTED THROUGH THIS EVENING. SPOTTERS SHOULD MONITOR LATER OUTLOOKS FOR WEDNESDAY AND WEDNESDAY NIGHT. MY
The Evansville,IN radar (KVWX), 65 km away, was scanning. The volume nearest the first event began at 22:14 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree and a power pole blew down at Cisne. Just north and northwest of Geff, shingles were blown off and fences were down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2009Every state in 2009This day in weather historyWarnings in Illinois, June 2009
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: 171896.