An isolated supercell thunderstorm developed in southern Kentucky and moved southward across Clay and Jackson Counties during the afternoon hours on July 12, producing wind damage and flash flooding.
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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 OHX wrote it up.
An isolated supercell thunderstorm developed in southern Kentucky and moved southward across Clay and Jackson Counties during the afternoon hours on July 12, producing wind damage and flash flooding.
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 Nashville, TN wrote its last area forecast discussion before the first event at Jul 12, 2:02 PM CST, 1 hour 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 302 PM CDT SUN JUL 12 2015 .DISCUSSION... ...HOT WEATHER TO CONTINUE RIGHT ON THROUGH THE WORK WEEK WITH RAIN CHANCES DIMINISHING ABOUT MID WEEK... ...HEAT INDICES ON MONDAY 100 TO 105... WARM UPPER LEVEL ANTICYCLONE CENTERED OVER PANHANDLE OF TEXAS AND SPRAWLED ACROSS MUCH OF SOUTHERN U.S. WILL MOVE LITTLE THROUGH TUESDAY. THIS WILL KEEP MID STATE IN NORTHWEST FLOW ALOFT WHICH MEANS PERIODS OF CONVECTION WORKING DOWN THROUGH OUR AREA OVER THE NEXT SEVERAL DAYS. TIMING IS VERY DIFFICULT IF NOT IMPOSSIBLE IN TERMS OF MESO CONVECTIVE SYSTEM'S THAT DEVELOP IN NORTHWESTERLY FLOW BUT THINK ONE COULD COME DOWN FROM THE NORTH MONDAY NIGHT AND AFFECT MAINLY THE EASTERN HALF OF MIDDLE TENNESSEE WITH A MORE POTENT MCS DIVING DOWN FROM THE NORTH DURING THE DAY ON TUESDAY AND INTO MIDDLE TENNESSEE TUESDAY EVENING AS A RATHER VIGOROUS SHORT WAVE MOVES DOWN ON EASTERN SIDE OF UPPER RIDGE. SHORT WAVE IS ASSOCIATED WITH RATHER STRONG VORTICITY. SOUTHERN PLAINS UPPER RIDGE THEN BUILDS THIS WAY LESSENING RAIN CHANCES BEGINNING ABOUT MID WEEK AND CONTINUING THROUGH THE UPCOMING WEEKEND WITH TEMPS HEATING UP FRIDAY THROUGH THE WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... NASHVILLE 75 95 75 93 / 10 20 20 50 CLARKSVILLE 74 94 75 93 / 10 10 20 40 CROSSVILLE 70 87 71 87 / 30 30 40 60 COLUMBIA 74 95 74 95 / 10 10 10 30 LAWRENCEBURG 74 94 74 95 / 10 10 10 30 WAVERLY 75 95 76 94 / 10 0 10 30 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && BOYD 01
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 1248 PM CDT SUN JUL 12 2015 TNZ005>011-023>034-056>066-075-077>080-093>095-131800- STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-HOUSTON- HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH- JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-WILLIAMSON- MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-CUMBERLAND-BEDFORD- COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES- 1248 PM CDT SUN JUL 12 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING FOR MOST AREAS OF MIDDLE TENNESSEE THAT ARE EAST OF INTERSTATE 65...AND A MARGINAL RISK ELSEWHERE IN THE MID STATE. THE MAIN CONCERN WITH THE POTENTIAL SEVERE STORMS IS FOR DAMAGING WINDS AND TORRENTIAL RAINFALL...ALTHOUGH SOME LARGE HAIL IS ALSO POSSIBLE. FOR LOCATIONS WEST OF THE CUMBERLAND PLATEAU REGION...HEAT INDEX VALUES THIS AFTERNOON WILL RANGE FROM 100 TO 105 DEGREES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ON MONDAY NIGHT...THERE IS A SLIGHT RISK OF SEVERE STORMS ACROSS ALL OF MIDDLE TENNESSEE...WITH THE GREATEST RISK IN THE NORTHCENTRAL AND NORTHEAST PARTS OF THE REGION. THE MAIN CONCERN WILL BE FOR DAMAGING WINDS...ALTHOUGH SOME LARGE HAIL MAY OCCUR. FOR TUESDAY AFTERNOON...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FOR LOCATIONS AROUND AND EAST OF I-65...WITH A SLIGHT RISK FOR THE REST OF MID STATE. DAMAGING WINDS...LARGE HAIL AND ISOLATED TORNADOES ARE POSSIBLE. FOR LOCATIONS WEST OF THE CUMBERLAND PLATEAU REGION...MONDAY AND TUESDAY AFTERNOON HEAT INDEX VALUES WILL RANGE FROM 100 TO 105 DEGREES. .SPOTTER INFORMATION STATEMENT... REPORTS FROM TRAINED SPOTTERS MAY BE NEEDED TODAY THROUGH TUESDAY. SPOTTER THUNDERSTORM REPORTING CRITERIA... TORNADO FUNNEL CLOUD FLOODING HAIL >= 1/2 INCH WINDS > 50 MPH (MEASURED) STRUCTURAL DAMAGE TREES OR POWER LINES DOWN LV
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1138 AM CDT SUN JUL 12 2015
TNZ010-011-033-034-066-121715-
CUMBERLAND TN-OVERTON TN-FENTRESS TN-PICKETT TN-CLAY TN-
1138 AM CDT SUN JUL 12 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CUMBERLAND...
EASTERN CLAY...FENTRESS...SOUTHWESTERN PICKETT AND OVERTON COUNTIES
UNTIL 1215 PM CDT...
AT 1134 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CLUSTER OF STRONG THUNDERSTORMS NEAR CELINA...MOVING EAST AT 20
MPH.
WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.
SOME LOCATIONS IMPACTED INCLUDE...
LIVINGSTON...JAMESTOWN...CELINA...BYRDSTOWN...ALLARDT...DALE HOLLOW
LAKE...GRIMSLEY...AND CLARKRANGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
VERY HEAVY RAIN IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING...ESPECIALLY IN AREAS THAT RECEIVED LOCALLY HEAVY
RAIN EARLY THIS MORNING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 3656 8484 3599 8502 3610 8516 3613 8513
3614 8510 3615 8521 3617 8526 3636 8550
3640 8550 3644 8554 3658 8549
TIME...MOT...LOC 1634Z 284DEG 18KT 3648 8544
LVSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NASHVILLE TN 1150 AM CDT SUN JUL 12 2015 TNZ005>009-023>032-056>065-075-077>079-093>095-122315- STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-HOUSTON-HUMPHREYS- DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-SMITH-JACKSON-PUTNAM- PERRY-HICKMAN-LEWIS-WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON- DE KALB-WHITE-BEDFORD-COFFEE-WARREN-GRUNDY-WAYNE-LAWRENCE-GILES- INCLUDING THE CITIES OF...DOVER...CLARKSVILLE...SPRINGFIELD... GALLATIN...LAFAYETTE...ERIN...WAVERLY...DICKSON...ASHLAND CITY... NASHVILLE...LEBANON...MOUNT JULIET...HARTSVILLE...CARTHAGE... GAINESBORO...COOKEVILLE...LOBELVILLE...CENTERVILLE...HOHENWALD... FRANKLIN...BRENTWOOD...COLUMBIA...LEWISBURG...MURFREESBORO... WOODBURY...SMITHVILLE...SPARTA...SHELBYVILLE...TULLAHOMA... MANCHESTER...MCMINNVILLE...ALTAMONT...WAYNESBORO...LAWRENCEBURG... PULASKI 1150 AM CDT SUN JUL 12 2015 ...ESPECIALLY HOT AND HUMID THIS AFTERNOON... HEAT INDEX VALUES WILL BE BETWEEN 102 AND 105 DEGREES THIS AFTERNOON ACROSS MUCH OF MIDDLE TENNESSEE EXCEPT FOR PARTS OF THE PLATEAU REGION WHERE READINGS WILL BE SLIGHTLY LOWER. ISOLATED THUNDERSTORMS WILL BRING SOME RELIEF TO A FEW AREAS BUT OTHERWISE IT WILL BE ESPECIALLY HOT MUCH OF TODAY. IF YOU PLAN TO BE OUTDOORS THIS AFTERNOON...HOT WEATHER SAFETY SHOULD BE AN IMPORTANT PART OF YOUR PLANNING. IF POSSIBLE...LIMIT YOUR TIME IN THE HEAT AND BE SURE TO DRINK ENOUGH WATER TO KEEP YOUR BODY HYDRATED. ALSO...REMEMBER THAT CAR INTERIORS CAN BECOME LETHAL IN A SHORT PERIOD OF TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
335 PM CDT SUN JUL 12 2015
TNZ010-011-033-034-122130-
OVERTON TN-FENTRESS TN-PICKETT TN-CLAY TN-
335 PM CDT SUN JUL 12 2015
...SIGNIFICANT WEATHER ADVISORY FOR CLAY...FENTRESS...PICKETT AND
OVERTON COUNTIES UNTIL 430 PM CDT...
AT 332 PM CDT...DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG
THUNDERSTORMS 9 MILES NORTHEAST OF CELINA...MOVING SOUTHEAST AT 20
MPH.
WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS AS THEY
MOVE FROM SOUTHERN KENTUCKY INTO THE UPPER CUMBERLAND PLATEAU.
LOCATIONS IMPACTED INCLUDE...
LIVINGSTON...JAMESTOWN...CELINA...BYRDSTOWN...ALLARDT...PALL MALL...
DALE HOLLOW LAKE...GRIMSLEY...STANDING STONE STATE PARK...PICKETT
STATE PARK...CRAWFORD AND MOSS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
LOCALLY VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE
STORMS...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.
&&
LAT...LON 3638 8472 3637 8473 3635 8473 3635 8474
3633 8474 3633 8477 3632 8479 3630 8480
3630 8482 3629 8484 3629 8487 3628 8488
3624 8488 3624 8489 3617 8521 3661 8569
3661 8515 3659 8480
TIME...MOT...LOC 2032Z 337DEG 19KT 3664 8537
LVThe Nashville radar (KOHX), 97 km away, was scanning. The volume nearest the first event began at 21:24 UTC.
3 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Power lines and two trees were blown down on Buzzard Lane and Turkey Town Road.
Trees were blown down and a roof was blown off a storage facility in Gainesboro.
Several streets and the Gainesboro Elementary School were flooded in Gainesboro.
Trees and power lines were blown down all along Granville Highway between the Smith County line and Gainesboro.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2015Every state in 2015This day in weather historyWarnings in Tennessee, July 2015
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: 595807, 595808, 595810, 595809.