A couple of isolated severe storms occurred along a weak warm front that extended from southern Missouri across southern Illinois.
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 PAH wrote it up.
A couple of isolated severe storms occurred along a weak warm front that extended from southern Missouri across southern Illinois.
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 Aug 2, 5:54 AM CST, 4 hours 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PADUCAH KY 654 AM CDT THU AUG 2 2012 .UPDATE... ISSUED AT 654 AM CDT THU AUG 2 2012 REVISED AVIATION DISCUSSION FOR 12Z TAFS. && .SHORT TERM...(TODAY THROUGH SATURDAY) ISSUED AT 330 AM CDT THU AUG 2 2012 MAIN NEAR TERM FORECAST ISSUE IS THE INCREASING PROBABILITY FOR SCATTERED SHOWERS AND THUNDERSTORMS...IN ADDITION TO THE PERSISTENT HEAT AND HUMIDITY. EARLY THIS MORNING...A WEAK BOUNDARY WAS DRAPED ACROSS THE REGION... FROM ROUGHLY BELLEVILLE TO MARION ILLINOIS TO MADISONVILLE KENTUCKY. THIS BOUNDARY PROVIDED A SHARP CONTRAST BETWEEN MUCH DRIER AIR TO ITS NORTHEAST AND HUMID AIR TO IS SOUTHWEST. THE BOUNDARY IS FORECAST TO SLOWLY SHIFT NORTHEAST OVER THE NEXT 24 TO 36 HOURS...RESULTING IN A GRADUAL INCREASE IN LOW LEVEL MOISTURE ACROSS THE ENTIRE REGION. OVER THE NEXT FEW DAYS...AN UPPER LEVEL HIGH WILL REMAIN POSITIONED OVER THE SOUTHERN PLAINS. THE FORECAST AREA WILL BE SITUATED IN WEAK ZONAL FLOW ON THE NORTHEAST PERIPHERY OF THIS RIDGE. PERIODIC IMPULSES OF ENERGY TRAVERSING THE FLOW PATTERN WILL BRING THE POTENTIAL FOR SCATTERED SHOWERS AND THUNDERSTORMS TO THE REGION. PRECIPITATION POTENTIAL TODAY WILL BE CONFINED MAINLY TO THE WESTERN HALF OF THE AREA WHERE DEW POINTS ARE ALREADY IN THE 70S. CHANCES FOR SHOWERS AND THUNDERSTORMS WILL INCREASE FROM WEST TO EAST TONIGHT AS THE DEW POINT BOUNDARY SLOWLY MIGRATES EAST. CHANCES ARE FORECAST TO INCREASE MARKEDLY AFTER MIDNIGHT WITH THE APPROACH OF UPPER LEVEL ENERGY. THIS INITIAL ROUND OF STORMS SHOULD SHIFT MORE INTO SOUTHERN AND EASTERN PORTIONS OF THE AREA ON FRIDAY. I HAVE LITTLE CONFIDENCE IN THE PERIOD FROM FRIDAY NIGHT INTO SATURDAY AS MODELS ARE NOT AT ALL ON THE SAME PAGE. RAIN CHANCES MAY DECREASE SOMEWHAT DURING THIS TIME...ESPECIALLY OVER THE WESTERN HALF OF THE AREA...AS WE AWAIT THE APPROACH OF A FAIRLY SUBSTANTIAL FRONTAL BOUNDARY LATE IN THE WEEKEND. TEMPERATURES TODAY WILL BE WARMEST OVER THE NORTHEASTERN HALF OF THE AREA GIVEN THE MUCH DRIER AIR IN PLACE. EXPECT SOMEWHAT LOWER READINGS ON FRIDAY AND SATURDAY...BUT STILL IN THE 90S...GIVEN THE INCREASE IN CLOUD COVER AND RAIN CHANCES. WITH PEAK HEAT INDEX VALUES FORECAST BELOW 105 ACROSS MUCH OF THE AREA...WILL ADDRESS THE SUB ADVISORY CONDITIONS WITH A SPECIAL WEATHER STATEMENT. .LONG TERM...(SATURDAY NIGHT THROUGH WEDNESDAY) ISSUED AT 330 AM CDT THU AUG 2 2012 NO BIG CHANGES ANTICIPATED TO THE CURRENT GRIDS...HOWEVER THERE WILL BE A SIGNIFICANT CHANGE IN THE WEATHER IN THE EXTENDED WITH GOOD CHANCE OF SIGNIFICANT RAIN AND COOLER TEMPS THROUGH THE WEEKEND. MEDIUM RANGE MODELS ARE IN VERY GOOD AGREEMENT WITH RESPECT TO THE OVERALL UPPER AIR PATTERN IN BRINGING A SIGNIFICANT SHORT WAVE ESE INTO THE MS RIVER VALLEY BY SUNDAY.THO THE MOST SIGNIFICANT PIECE OF ENERGY SHOULD STAY UP NEAR THE GREAT LAKES...THIS SYSTEM WILL LIKELY HAVE A COPIOUS AMOUNT OF MOISTURE AS THE GULF SHOULD OPEN FOR BUSINESS. GFS/ECMWF ALSO INDICATED QUITE A BIT IF INSTABILITY...WITH PROGGED CAPES 2000-4000 KG BY 18Z SUN. LACK OF MUCH CONVERGENCE WITH THE FRONT SEEMS TO BE A LIMITING FACTOR FOR STRONG STORM DEVELOPMENT...BUT WIDESPREAD MID/UPPER ASCENT MAY OVERCOME THIS. THUS...WE WILL NEED TO MONITOR THIS SYSTEM FOR BOTH LOCALLY HEAVY RAINFALL AND STRONG STORM DEVELOPMENT SUN AFTERNOON. COULD GET SOME SCT WARM SECTOR ACTIVITY OUT HEAD OF THE TROF SAT NIGHT...BUT RAIN CHCS APPEAR MORE LIKELY SUNDAY WITH THE FRONT ITSELF. LOOKING FOR NW FLOW ALOFT TO BRING HIGH PRESSURE IN FOR THE REMAINDER OF THE EXTENDED FORECAST. THINGS MAY DRY AND COOL DOWN A BIT IN THE WAKE OF THE SYSTEM MONDAY...BUT LOOK FRO A GRADUAL RETURN TO MORE HEAT AND HUMIDITY AS WE HEAD INTO MID WEEK. && .AVIATION... ISSUED AT 654 AM CDT THU AUG 2 2012 VFR CONDITIONS WILL PERSIST OVER THE NEXT 24 HOURS. A BOUNDARY REMAINED IN PLACE ACROSS SOUTHERN ILLINOIS AND WESTERN KENTUCKY THIS MORNING. NORTH OF THE BOUNDARY...DRY AIR WILL KEEP THE KEVV/KOWB AREAS FREE OF CLOUDS TODAY. SOUTH OF THE BOUNDARY...HIGHER HUMIDITY WILL RESULT IN THE DEVELOPMENT OF SCATTERED CUMULUS CLOUDS ACROSS THE KCGI/KPAH AREA. ISOLATED THUNDERSTORMS MAY ALSO DEVELOP IN THE HEAT OF THE AFTERNOON...BUT ANTICIPATED COVERAGE IS TOO LOW TO MENTION IN TAFS. EXTENSIVE MID TO HIGH LEVEL CLOUDS WILL ARRIVE THIS EVENING AHEAD OF A SYSTEM APPROACHING FROM THE PLAINS. SCATTERED SHOWERS AND STORMS WILL BE POSSIBLE LATE TONIGHT. DID NOT MENTION IN TAFS AT THIS TIME SINCE THE BEST CHANCES FALL IN THE LAST 6 HOURS OF THE CURRENT FORECAST. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...NONE. MO...NONE. IN...NONE. KY...NONE. && UPDATE...RP SHORT TERM...RP LONG TERM....GM AVIATION...RP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PADUCAH KY 509 AM CDT THU AUG 2 2012 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-031000- 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- 509 AM CDT THU AUG 2 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY...MAINLY OVER SOUTHEAST MISSOURI...SOUTHERN ILLINOIS...AND FAR WESTERN KENTUCKY. AN ISOLATED SEVERE STORM CAPABLE OF PRODUCING DAMAGING WIND OR LARGE HAIL CANNOT BE RULED OUT. SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS THE ENTIRE REGION TONIGHT. SEVERE STORMS ARE NOT EXPECTED...BUT LOCALLY HEAVY RAIN IS POSSIBLE. PEAK HEAT INDEX VALUES WILL RANGE FROM 100 TO 105 ACROSS MOST OF THE REGION THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A CHANCE OF THUNDERSTORMS IS FORECAST EACH DAY FROM FRIDAY THROUGH SUNDAY...WITH THE BEST CHANCES ON FRIDAY AND AGAIN ON SUNDAY. ISOLATED SEVERE STORMS CANNOT BE RULED OUT...ESPECIALLY DURING EACH AFTERNOON AND EVENING. HEAT INDICES WILL REACH THE 100 TO 105 RANGE OVER PORTIONS OF THE AREA ON SATURDAY. AFTER A RESPITE FROM THE EXTREME HEAT EARLY NEXT WEEK...HEAT INDEX VALUES WILL CREEP BACK UP TO NEAR 100 OR SO AS WE HEAD INTO TUESDAY AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
The Paducah radar (KPAH), 112 km away, was scanning. The volume nearest the first event began at 16:24 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
A section of roof was blown off a large machine shed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2012Every state in 2012This day in weather historyWarnings in Missouri, August 2012
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: 398252, 398249.