Scattered thunderstorms developed during the afternoon and early evening of September 2nd. At least one storm produced damaging winds in southern Indiana.
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 LMK wrote it up.
Scattered thunderstorms developed during the afternoon and early evening of September 2nd. At least one storm produced damaging winds in southern Indiana.
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 Louisville, KY wrote its last area forecast discussion before the first event at Sep 2, 4:01 PM EST, 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOUISVILLE KY 501 PM EDT FRI SEP 2 2011 ...FORECAST UPDATE... UPDATED THE FORECAST TO INCLUDE A SLIGHT CHANCE OF A THUNDERSTORM SOUTH OF THE I 64 CORRIDOR FOR THE REST OF THIS AFTERNOON AND EVENING. AN AREA OF SURFACE CONVERGENCE HAS KICKED OFF A FEW SHOWERS AND THUNDERSTORMS MAINLY IN THE LAKE CUMBERLAND REGION WITH POTENTIAL ACROSS SOUTH CENTRAL KENTUCKY AS WELL. SOUNDINGS DO HINT AT A SUBSIDENCE INVERSION AROUND 18 K FEET SO EXPECT UPDRAFTS TO STRUGGLE ABOVE THIS LEVEL. A FEW CLOUD TO GROUND LIGHTNING STRIKES AND BRIEF HEAVY RAINFALL SHOULD BE THE MAIN THREATS AS STORM MOTION IS SLOW. UPDATED PRODUCTS ALREADY OUT. .SHORT TERM (TONIGHT AND SATURDAY)... ITS ANOTHER HOT ONE OUT THERE THIS AFTERNOON. UNDER MOSTLY SUNNY SKIES TEMPERATURES HAVE CLIMBED BACK INTO THE 95-100 DEGREE RANGE ACROSS SOUTHERN INDIANA AND CENTRAL KENTUCKY. CORE OF THE WARMEST AIR IS CENTERED ALONG AND WEST OF I-65 WHERE TEMPERATURES ARE HOOVERING IN THE 99-100 DEGREE RANGE. TEMPERATURES MAY INCH UP ANOTHER DEGREE IN THE NEXT HOUR BEFORE COOLING SOMEWHAT INTO THE LOWER 90S THIS EVENING. RECENT VISIBLE SATELLITE DATA SHOWS WHAT APPEARS TO BE SOMEWHAT OF A CONVERGENCE LINE RUNNING FROM NEAR GRAYSON COUNTY EASTWARD TO ESTILL COUNTY. INTERESTINGLY ENOUGH...SOME CONVECTION IS ACTUALLY FIRING ALONG THIS BOUNDARY...MAINLY EAST OF OUR CWA. CURRENT MESOSCALE ANALYSIS REVEALS A GENERALLY CAPPED ATMOSPHERE IN PLACE ACROSS CENTRAL KENTUCKY WITH LI'S RUNNING NEAR 0 TO -2 DEGREES C. BETTER INSTABILITY RESIDES OVER WFO JKL'S AREA WHERE THE CONVECTION HAS DEVELOPED. THE NAM RUNS FROM 12Z DID PICK UP ON THIS AREA OF CONVERGENCE...BUT REALLY DOES NOT DEVELOP IT ALL THAT MUCH. FOR NOW...GIVEN THE AMOUNT OF CAPPING...AM GOING TO KEEP THE FORECAST DRY...BUT IT IS POSSIBLE THAT A FEW PLACES MAY GET A BRIEF DOWNPOUR...ESPECIALLY IN OUR EAST-CENTRAL LOCATIONS. FOR TONIGHT...CONSENSUS OF THE LATEST MODEL DATA SUGGEST ANOTHER CLEAR NIGHT WITH LIGHT WINDS. RADIATIONAL COOLING WILL RESULT WITH TEMPERATURES FALLING INTO THE LOWER-MID 70S...THOUGH THE DOWNTOWN URBAN AREAS ARE LIKELY TO STAY IN THE MID-UPPER 70S. ONE MORE DAY OF HOT WEATHER IS EXPECTED FOR SATURDAY AS CORE OF THE UPPER AND SFC RIDGES REMAINS OVER THE AREA. THIS SHOULD RESULT IN A SUNNY DAY WITH HIGHS WARMING BACK UP INTO THE 96-101 DEGREE RANGE. IT DOES LOOK LIKE LOUISVILLE INTERNATIONAL MAY TOP 100 AGAIN ON SATURDAY ALONG WITH BOWLING GREEN. DEWPOINTS ARE EXPECTED TO REMAIN IN THE LOWER TO MIDDLE 60S WHICH WILL PRODUCE HEAT INDICES UP NEAR ADVISORY CRITERIA. WILL HOLD OFF ON A HEAT ADVISORY AT THIS TIME...BUT CONTINUE THE SPECIAL WEATHER STATEMENT ADDRESSING THE HEAT FOR THE SATURDAY TIME FRAME. .LONG TERM (SATURDAY NIGHT - FRIDAY)... ...SATURDAY NIGHT THROUGH MONDAY... AN INTERESTING FORECAST AHEAD FOR THIS TIME PERIOD AS THE CURRENT HEAT WAVE BREAKS AS A POTENT COLD FRONT MOVES THROUGH ON SUNDAY...KNOCKING 10 DEGREES OFF SATURDAY'S MAX TEMPS...WITH ANOTHER 10-15 DEGREES COOL DOWN FOR MONDAY. WITH THE SURFACE HAVING JUST BEEN BAKED BY RECENT HIGH TEMPERATURES AND RELATIVELY LOW HUMIDITY...THUNDERSTORMS WILL BE WELCOME. HOWEVER...GIVEN THE LAST TWO SYSTEMS THAT LOOKED PROMISING GIVING US NOTHING BUT SPRINKLES...AM HESITANT TO PROMISE PRECIPITATION WITH DROUGHT CONDITIONS STARTING TO WORSEN. NEVERTHELESS...HAVE GONE UP TO 50 POPS ACROSS THE AREA WITH THE FRONTAL PASSAGE. PER SPC DAY 3 DISCUSSION...CAN NOT RULE OUT SOME SEVERE STORMS WITH THIS SYSTEM...BUT DOES NOT LOOK TO BE A WIDESPREAD EVENT. MONDAY NIGHT THROUGH FRIDAY... THIS IS WHERE THINGS REALLY GET TRICKY. EARLIER MODEL RUNS HAD DELAYED THE NORTHWARD MOVEMENT OF NEWLY NAMED TROPICAL DEPRESSION LEE JUST ENOUGH FOR THE AFOREMENTIONED COLD FRONT AND ASSOCIATED UPPER TROF TO PUSH LEE EAST OF OUR FORECAST AREA. 12Z RUNS OF BOTH THE ECMWF AND GFS NOW SHOW AGREEMENT ON BRINGING THE CENTER OF LEE NORTH FAR ENOUGH TO INTERACT WITH THE FRONT OVER AT LEAST THE SOUTHEAST THIRD OF THE CWA. EVEN MORE PROMISING IS THE CURRENT SOLUTION OF HAVING LEE LINGER OVER THE OHIO VALLEY FOR THE REMAINDER OF THE FORECAST PERIOD. NOT ONLY WOULD THIS RESULT IN CONTINUING PRECIPITATION CHANCES...BUT THANKS TO THE CLOUD COVER WOULD KEEP TEMPERATURES AT OR BELOW NORMAL...AT LEAST FOR DAYTIME HIGHS...THROUGH THE REMAINDER OF THE WEEK. WITH ALL OF THE ABOVE TAKEN INTO CONSIDERATION...AT FIRST GLANCE IT WOULD APPEAR TO BE A WET WEEK AHEAD. HOWEVER...WHEN IT COMES TO BREAKING AN EXTENDED PERIOD OF DRY WEATHER...PERSISTENCE IS OFTEN THE BEST FORECAST. SO DESPITE POPS IN THE 20-50 RANGE OVER THE SOUTHEAST 1/2 OF THE CWA FOR SEVERAL DAYS...IT IS WITH THE CAVEAT THAT THE LINE BETWEEN WET AND DRY HAS TO BE SOMEWHERE...AND THERE IS NO GUARANTEE IT WILL BE AS FAR WEST AS I HAVE DRAWN IT. REGARDLESS...AFTER TRIPLE DIGIT TEMPERATURES TO START SEPTEMBER...THE ONE CERTAIN ASPECT OF THIS WEEK IS THAT THERE WILL NOT BE A REPEAT OF THAT. && .AVIATION (18Z TAF ISSUANCE)... INCREASED UPPER LEVEL RIDGING COMBINED WITH STRONG SURFACE HIGH PRESSURE WILL LEAD TO VFR CONDITIONS THROUGH THE FORECAST PERIOD AT THE TERMINALS. MOSTLY CLEAR SKIES AND HOT WEATHER IS EXPECTED THIS AFTERNOON AT THE TERMINALS. SURFACE WINDS ARE EXPECTED REMAIN LIGHT AND VARIABLE WITH SPEEDS LESS THAN 4 KTS. FOR TONIGHT...CLEAR SKIES ARE EXPECTED AGAIN WITH VFR CONDITIONS. KBWG WILL LIKELY GET A LITTLE LIGHT FOG AGAIN BETWEEN 03/08-12Z...WITH CONDITIONS RETURNING TO VFR BY 03/13Z. OUTLOOK FOR SATURDAY...VFR CONDITIONS WITH LIGHT SOUTHERLY TO SOUTHWESTERLY WINDS. && .LMK WATCHES/WARNINGS/ADVISORIES... KY...NONE. IN...NONE. && UPDATE.........BJS SHORT TERM.....MJ LONG TERM......JBS AVIATION.......MJ
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LOUISVILLE KY 449 PM EDT FRI SEP 2 2011 INZ076>079-083-084-089>092-KYZ030>043-049-032100- ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN- CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-JEFFERSON KY- OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-SCOTT KY- HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-FAYETTE KY- BOURBON KY-NICHOLAS KY-CLARK KY- 449 PM EDT FRI SEP 2 2011 /349 PM CDT FRI SEP 2 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...THIS AFTERNOON AND TONIGHT. TEMPERATURES WILL REMAIN ABOVE 90 DEGREES UNTIL AFTER SUNSET THIS EVENING. USE CAUTION IF YOU HAVE OUTDOOR PLANS THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. TEMPERATURES WILL CLIMB INTO THE UPPER 90S TO AROUND 100 DEGREES ON SATURDAY AFTERNOON. THESE TEMPERATURES COMBINED WITH MODERATE HUMIDITY WILL ALLOW YIELD HEAT INDICES AROUND 100 DEGREES...AND EVEN THE LOW 100S MAINLY ALONG AND WEST OF I-65. USE CAUTION IF YOU HAVE OUTDOOR PLANS. A CHANCE FOR THUNDERSTORMS WILL BEGIN LATE SATURDAY NIGHT AS A COLD FRONT MOVES IN FROM THE NORTHWEST. WHILE A WIDESPREAD SEVERE EVENT IS NOT EXPECTED...A FEW OF THE STRONGER STORMS COULD PRODUCE DAMAGING WIND GUSTS IN ADDITION TO BRIEF HEAVY RAIN AND LIGHTNING THROUGH SUNDAY NIGHT. A CHANCE REMAINS FOR SHOWERS AND OCCASIONAL THUNDERSTORMS DURING MUCH OF THE NEXT WEEK AS THE REMNANTS OF TROPICAL DEPRESSION LEE WORKS ITS WAY NORTH INTO THE OHIO VALLEY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. KYZ023>029-045>048-053>057-061>067-070>078-081-082-032100- HANCOCK KY-BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY- BULLITT KY-NELSON KY-WASHINGTON KY-MERCER KY-JESSAMINE KY- LARUE KY-MARION KY-BOYLE KY-GARRARD KY-MADISON KY-BUTLER KY- EDMONSON KY-HART KY-GREEN KY-TAYLOR KY-CASEY KY-LINCOLN KY- LOGAN KY-WARREN KY-SIMPSON KY-ALLEN KY-BARREN KY-MONROE KY- METCALFE KY-ADAIR KY-RUSSELL KY-CUMBERLAND KY-CLINTON KY- 449 PM EDT FRI SEP 2 2011 /349 PM CDT FRI SEP 2 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL INDIANA AND CENTRAL KENTUCKY. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS WILL BE POSSIBLE THROUGH THE LATE AFTERNOON AND EARLY EVENING. A FEW CLOUD TO GROUND LIGHTNING STRIKES AND BRIEF HEAVY RAINFALL WILL BE POSSIBLE WITH ANY THUNDERSTORM. TEMPERATURES WILL REMAIN ABOVE 90 DEGREES UNTIL AFTER SUNSET THIS EVENING. USE CAUTION IF YOU HAVE OUTDOOR PLANS THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. TEMPERATURES WILL CLIMB INTO THE UPPER 90S TO AROUND 100 DEGREES ON SATURDAY AFTERNOON. THESE TEMPERATURES COMBINED WITH MODERATE HUMIDITY WILL ALLOW YIELD HEAT INDICES AROUND 100 DEGREES...AND EVEN THE LOW 100S MAINLY ALONG AND WEST OF I-65. USE CAUTION IF YOU HAVE OUTDOOR PLANS. A CHANCE FOR THUNDERSTORMS WILL BEGIN LATE SATURDAY NIGHT AS A COLD FRONT MOVES IN FROM THE NORTHWEST. WHILE A WIDESPREAD SEVERE EVENT IS NOT EXPECTED...A FEW OF THE STRONGER STORMS COULD PRODUCE DAMAGING WIND GUSTS IN ADDITION TO BRIEF HEAVY RAIN AND LIGHTNING THROUGH SUNDAY NIGHT. A CHANCE REMAINS FOR SHOWERS AND OCCASIONAL THUNDERSTORMS DURING MUCH OF THE NEXT WEEK AS THE REMNANTS OF TROPICAL DEPRESSION LEE WORKS ITS WAY NORTH INTO THE OHIO VALLEY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. MJ/BJS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
530 PM EDT FRI SEP 2 2011
KYZ070-022200-
LOGAN-
430 PM CDT FRI SEP 2 2011
...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND 50
MPH WINDS...
AT 428 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES NORTHWEST OF RUSSELLVILLE...AND MOVING
NORTHWEST AT 10 MPH.
OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL RATES OF AROUND ONE
INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...AND
STRONG GUSTY WINDS OF AROUND 45 TO 50 MPH...ARE EXPECTED WITH THIS
STORM.
* THIS STORM WILL ALSO IMPACT...
DEER LICK AND HOLLOW BILL...
AGNES...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STRONG WINDS WITH THIS STORM CAN TOPPLE WEAKLY ROOTED TREES...AND
DOWN POWER LINES. TAKE PRECAUTIONS NOW TO SECURE TRASH CANS...LAWN
FURNITURE AND OTHER LOOSE OUTDOOR OBJECTS. MOTORISTS IN HIGH PROFILE
VEHICLES SHOULD USE CAUTION.
&&
LAT...LON 3706 8706 3707 8705 3708 8699 3708 8696
3701 8687 3693 8694 3696 8706
TIME...MOT...LOC 2130Z 120DEG 11KT 3702 8699
SCHOETTMERSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
532 PM EDT FRI SEP 2 2011
INZ078-092-022200-
CLARK-SCOTT-
532 PM EDT FRI SEP 2 2011
...STRONG THUNDERSTORM WITH DANGEROUS LIGHTNING...HEAVY RAIN...AND 50
MPH WINDS...
AT 528 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 10 MILES SOUTH OF SCOTTSBURG THIS STORM WAS
NEARLY STATIONARY.
OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL RATES OF AROUND ONE
INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...AND
STRONG GUSTY WINDS OF AROUND 45 TO 50 MPH...ARE EXPECTED WITH THIS
STORM.
* THIS STORM WILL ALSO IMPACT...
BLUE LICK...
THIS STORM WILL AFFECT INTERSTATE 65 IN INDIANA BETWEEN MILE MARKERS
19 AND 22.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STRONG WINDS WITH THIS STORM CAN TOPPLE WEAKLY ROOTED TREES...AND
DOWN POWER LINES. TAKE PRECAUTIONS NOW TO SECURE TRASH CANS...LAWN
FURNITURE AND OTHER LOOSE OUTDOOR OBJECTS. MOTORISTS IN HIGH PROFILE
VEHICLES SHOULD USE CAUTION.
&&
LAT...LON 3860 8570 3846 8581 3849 8590 3850 8590
3850 8589 3851 8588 3852 8587 3854 8587
3855 8585 3858 8585 3858 8588 3864 8589
TIME...MOT...LOC 2132Z 054DEG 1KT 3854 8582
SCHOETTMERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
540 PM EDT FRI SEP 02 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0528 PM TSTM WND DMG LEWISBURG 36.99N 86.95W
09/02/2011 LOGAN KY FIRE DEPT/RESCUE
MINOR ROOF DAMAGE TO A HOUSE
&&
EVENT NUMBER LMK1101118
RLThe Louisville radar (KLVX), 66 km away, was scanning. The volume nearest the first event began at 21:51 UTC.
1 thunderstorm wind. Local standard time, as filed.
Local law enforcement reported that a couple of downed trees fell across State Highway 160 at the Clark-Scott County line.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2011Every state in 2011This day in weather historyWarnings in Indiana, September 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: 331030.