During the late morning through afternoon hours on Saturday, July 14th, scattered to numerous thunderstorms that developed across Davidson and Wilson Counties produced flash flooding.
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 OHX wrote it up.
During the late morning through afternoon hours on Saturday, July 14th, scattered to numerous thunderstorms that developed across Davidson and Wilson Counties produced 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 14, 8:57 AM CST, 2 hours 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 957 AM CDT SAT JUL 14 2012 .UPDATE... H5 S/W MOVG NORTH ACROSS MID-TN. PWATS OF 2.2" IN 12Z RAOB KBNA. COMBINATION OF VERY HIGH MOISTURE AND LIFT WL PRODUCE HEAVY RAINFALL IN SOME AREAS OF NORTHWEST MID-TN THROUGH NOON. SHORT-TERM MODELS CONTINUE TO SHOW LOCALLY HEAVY RAINFALL POSSIBLE NEAR THE KY LINE THIS AFTN. && .PREV DISCUSSION... /ISSUED 633 AM CDT SAT JUL 14 2012/ UPDATE...FOR 12Z AVIATION FORECAST AVIATION... UPPER RIDGE REMAINS ACROSS THE SOUTHEASTERN US WITH UPPER TROUGH DOWN THROUGH THE MISSISSIPPI RIVER VALLEY. SHOWERS AND ISOLATED STORMS EXTEND FROM EASTERN ARKANSAS NORTHEAST INTO SOUTHERN ILLINOIS/INDIANA LIFTING NORTHEAST. THIS ACTIVITY ALIGNS QUITE WELL WITH UPPER LEVEL DIFFLUENCE ALONG ELONGATED UPPER JET. HERE IN MIDDLE TENNESSEE THIS MORNING WE HAVE GOOD MOISTURE TRANSPORT FROM THE SOUTH BUT WEAK LIFT AS SCATTERED PATCHY LIGHT RAIN OR SPRINKLES CONTINUES TO TRANSLATE NORTHWARD. PRECIPITABLE WATER REMAINS AROUND 2 INCHES. WITH CONVECTIVE TEMP AT 84 AND POSITIVE ENERGY AROUND 3K JOULES/KG EXPECT TO SEE SOME THUNDERSTORMS AROUND DURING THE AFTERNOON/EVENING. BOYD PREV DISCUSSION... /ISSUED 401 AM CDT SAT JUL 14 2012/ DISCUSSION... THE 500 MB BERMUDA HIGH AND RIDGE IN THE MIDWEST WILL CONTINUE TO PINCH OFF THE SHORTWAVE TROUGH SITUATED JUST WEST OF THE MS RIVER...A PSEUDO DRY LINE OF 1000-500MB RH MARKS THE SEPARATION OF THE MARITIME TROPICAL AIRMASS OF THE BERMUDA HIGH AND THE CONTINENTAL TROPICAL AIRMASS IN THE WEST. THIS LINE...PROGGED TO SLOWLY TRANSLATE EASTWARD TOWARD THE MS RIVER...WILL BE THE WESTERNMOST EXTENT OF THE WIDESPREAD AREA OF THUNDERSTORM DEVELOPMENT TODAY. THE ANTICYCLONIC FLOW OF THE BERMUDA HIGH WILL CONTINUE TO ADVECT RICH MOISTURE FROM THE GULF INTO THE SOUTHEASTERN CONUS AND COUPLED WITH MAX TEMPS EXPECTED TO REACH THE LOWER 90S IN MIDDLE TN...CONVECTIVE TEMPERATURES WILL BE EASILY REACHED AND WE SHOULD DEFINITELY SEE WIDESPREAD RAIN DEVELOPMENT PERHAPS AS EARLY AS 14-15Z. AS THE UPPER LEVEL SHORTWAVE MOVES EASTWARD...250 MB DIFFLUENCE APPEARS TO DEVELOP ON THE RIGHT ENTRANCE REGION...MORE SUBSTANTIAL IN THE NAM BUT STILL APPARENT IN THE GFS. THIS AREA OF DIFFLUENCE OVER THE WESTERN HALF OF THE STATE WILL BE THE HIGHEST CHANCE FOR THUNDER AS LITTLE OTHER FORCING IS APPARENT. ALREADY AT 0830Z THIS DIFFLUENCE IS RESULTING IN A SWATH OF CONVECTION FROM MEMPHIS TO SOUTHERN INDIANA. THIS WIDESPREAD COVERAGE SHOULD DECREASE PRETTY RAPIDLY AS DIURNAL HEATING SUBSIDES. HOWEVER...THE UPPER LEVEL SHORTWAVE FORCING WILL STILL BE PRESENT SO WILL KEEP LOWER BUT STILL CHC POPS IN THE GRID AFTER 00Z FOR THIS AREA. AS FOR THE HANDLING OF THE DEPARTURE OF THE SHORTWAVE TROUGH...THE GFS AGGRESSIVELY DIGS THIS FEATURE DOWN INTO THE SOUTHEASTERN STATES BY MONDAY NIGHT AND PUSHES THE BERMUDA HIGH INLAND SETTING UP AN AXIS OF INSTABILITY DRAPED ACROSS OUR AREA THROUGH MUCH OF THE WEEK. HOWEVER THE NAM AND ECMWF HAS THE SHORTWAVE INCONSEQUENTIALLY PASSING EAST OFFSHORE WHILE THE HIGH BUILDS AND PARKS ITSELF OVER THE SOUTHEAST. GIVEN THE DEPTH AND LENGTH OF TIME THIS AIR MASS HAS HAD TO STAGNATE...FEEL THE LATTER THEORY IS MORE APPROPRIATE. THUS HAVE NOT BOUGHT INTO THE GUIDANCE POP VALUES THAT HAVE INCREASED SUBSTANTIALLY IN THE 00Z RUN. ALSO...WITH MAX TEMPS RETURNING TO THE LWOER TO MID 90S AND DEWPOINTS IN THE LOWER 70S...HEAT INDEXS WILL FLIRT WITH THE 100 DEGREE MARK STARTING MONDAY. && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 04
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 549 AM CDT SAT JUL 14 2012 TNZ005>011-022>034-056>066-075-077>080-093>095-151100- STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON- 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- 549 AM CDT SAT JUL 14 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT WIDESPREAD SHOWERS AND THUNDERSTORMS WILL IMPACT MIDDLE TENNESSEE TODAY WITH LOCALLY HEAVY RAINFALL. WITH PERSISTENT RAINFALL OVER THE LAST WEEK...LOCALIZED FLOODING WILL BE POSSIBLE WITH THE HEAVIEST DOWNPOURS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... SHOWERS AND THUNDERSTORMS CAPABLE OF PRODUCING LOCALLY HEAVY RAIN WILL BE POSSIBLE DURING THE AFTERNOON AND EVENING HOURS THROUGH NEXT FRIDAY. LOCALIZED FLOODING WILL BE POSSIBLE WITH THE HEAVIEST DOWNPOURS. .SPOTTER CALL TO ACTION STATEMENT... SPOTTERS AND LOCAL EMERGENCY MANAGEMENT OFFICIALS ARE ENCOURAGED TO REPORT HEAVY RAINFALL AMOUNTS TO THE NATIONAL WEATHER SERVICE IN NASHVILLE. TB12
The Nashville radar (KOHX), 12 km away, was scanning. The volume nearest the first event began at 17:01 UTC.
3 flash flood. Local standard time, as filed.
Water over roadway near the intersection of McCampbell Avenue and Stewarts Ferry Pike.
Flooding was reported in the Green Hills and Old Hickory areas of the county.
Water was over the roadway near the intersection of Tulip Grove Road and Central Pike.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2012Every state in 2012This day in weather historyWarnings in Tennessee, July 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: 392322, 392324, 392325.