Another line of strong to severe thunderstorms moved across Middle Tennessee during the late morning and afternoon hours. A second line of thunderstorms formed over western Kentucky and moved across northern portions of Middle Tennessee in the evening.
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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.
Another line of strong to severe thunderstorms moved across Middle Tennessee during the late morning and afternoon hours. A second line of thunderstorms formed over western Kentucky and moved across northern portions of Middle Tennessee in the evening. A few reports of flooding and wind damage were received.
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 Aug 5, 8:35 AM CST, 1 hour 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 935 AM CDT SUN AUG 5 2012 .UPDATE...MORNING ANALYSIS INDICATES VERY MOIST CONDITIONS WITH PRECIPITABLE WATER VALUES FROM 2 TO 2.25 INCHES OVER MID TN. DAYTIME HEATING WILL ENHANCE DESTABILIZATION...AND SCATTERED SHRA WILL TRANSITION TO SCT TSRA AND EVENTUALLY NUMEROUS +TSRA BY LATE AFTERNOON. NOT WORRIED ABUT SEVERE WX THIS MORNING...WITH EXTENSIVE CLOUDS OVER THE AREA. AS WE GO INTO THE AFTERNOON THROUGH EVENING...A POTENTIAL FOR DAMAGING WINDS WILL DEVELOP WITHIN STORMS WITH STRONGER UPDRAFTS. OTHERWISE...WE WILL HAVE TO WATCH FOR SHORT TERM HEAVY RAINFALL. SOME LOCATIONS WILL HAVE 1-2 INCH PER HOUR RAINFALL RATES. FLOODING OF STREETS AND LOW LYING AREAS SHOULD BE EXPECTED. THE GREATEST CONCENTRATION OF ACTIVITY WILL BE FROM 5 PM TO 10 PM CDT...SO BUMPED UP FORECAST POPS FOR THAT TIME. 13 && .PREV DISCUSSION... /ISSUED 616 AM CDT SUN AUG 5 2012/ UPDATE...ADDED AVIATION SECTION FOR 12Z TAF'S AVIATION...BNA/CKV/CSV...EARLIER CONVECTION HAS DIMINISHED CONSIDERABLY, WITH A FEW LEFTOVER CELLS MOVING INTO THE UPPER PLATEAU THIS HOUR. COLD FRONT SITUATED TO OUR NW IS STILL EXPECTED TO DROP SEWD THROUGH MIDDLE TENNESSEE LATE THIS AFTERNOON AND EVENING. AM ACTUALLY EXPECTING TWO ROUNDS OF ACTIVE WEATHER. LOOK FOR CONVECTION TO ONCE AGAIN DEVELOP DURING PEAK-HEATING HOURS, WITH ANOTHER ROUND OCCURRING WITH THE SURFACE FRONT MAINLY DURING THE EVENING. HAVE USED THE 06Z WRF MODEL TO TIME THE FRONT'S PROGRESS. ALSO EXPECT FOG TO DEVELOP OVERNIGHT WITH THE MOIST GROUND AND HIGH DEW POINTS. PREV DISCUSSION... /ISSUED 309 AM CDT SUN AUG 5 2012/ DISCUSSION...TWO SUMMERTIME FRONTAL SYSTEMS...ONE TDA AND TNGT AND THE SECOND NEXT THU NGT AND FRI. SPC IS INDICATING THE POSSIBILITY OF ISOLATED SEVERE STORMS WITH STRONG WINDS AND MARGINAL HAIL...MAINLY FROM MID AFTERNOON THROUGH MID EVENING. ALSO...WITH COLUMN WATER RANGING FROM 2.0 TO 2.4 INCHES AHEAD OF THE FRONT...LOCALIZED FLOODING IS ALSO POSSIBLE. HPC IS INDICATING FROM 0.50 TO 1.5 INCHES OF RAIN WITH ISOLATED HIGHER AMOUNTS. FRONT IS EXPECTED TO ENTER THE NW COUNTIES AROUND 5 PM AND PUSH SLOWLY SOUTHEASTWARD TO A TRI-CITIES TO ALTAMONT TO TUPELO LINE BY EARLY MON MORNING. FRONT MOVES A LITTLE FURTHER SOUTH BUT POST FRONTAL CONVECTION WILL CONTINUE OVER A PORTION OF THE SERN HALF OF THE AREA FOR MON THRU WED. THEN THE FRONT...OR WHAT REMAINS OF IT...MOVES BACK NWD ACROSS THE AREA ON THU WITH POPS INCREASING OVER THE AREA. THEN THE 2ND FRONT DROPS SEWD OUT OF THE MIDWEST AND ENTERS THE MIDSTATE EARLY FRI. COLUMN WATER AHEAD OF THIS FRONT IS ONLY ABOUT 1.4 INCHES. THUS POPS STAY IN THE LOWER CHANCE RANGE. MODELS DON'T INDICATE AS MUCH DRY AIR BEHIND THIS FRONT AS THE FIRST ONE. && .OHX WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 500 AM CDT SUN AUG 5 2012 TNZ005>011-022>034-056>066-075-077>080-093>095-061030- 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- 500 AM CDT SUN AUG 5 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR ALL OF MIDDLE TENNESSEE AS A COLD FRONT APPROACHES THE MID STATE FROM THE NORTHWEST. THE PRIMARY THREATS ARE DAMAGING STRAIGHT LINE WINDS AND LARGE HAIL. BRIEF, LOCALIZED FLOODING RESULTING FROM HEAVY RAINFALL IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER CALL TO ACTION STATEMENT... REPORTS FROM TRAINED WEATHER SPOTTERS MAY BE NEEDED. SPOTTER THUNDERSTORM REPORTING CRITERIA... TORNADO FUNNEL CLOUD FLOODING HAIL >= 1/2 INCH WINDS > 50 MPH (MEASURED) STRUCTURAL DAMAGE TREES OR POWER LINES DOWN ROSE
The Nashville radar (KOHX), 30 km away, was scanning. The volume nearest the first event began at 16:30 UTC.
2 flood, 2 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Emergency management and social media reported minor flooding on secondary roadways and yards in Castalian Springs. Roads that were flooded included Greenfield Lane, Rogana Road, and Rock Springs Road. Bledsoe Creek rose above its banks near Highway 25.
A retired NWS employee and television media reported minor flooding in and around Hartsville. Several roads had minor flooding including Brummit Road where water was covered the yards of several homes.
Emergency management and social media reported flash flooding across northern White County north of Sparta. The Calfkiller River was well out of its banks and surrounding homes on Coal Bank Road. Two other roads in the area were closed due to the flooding.
Highway Department reported trees down on several secondary roads in southeast Benton County.
Trees were blown down on Rossview Road.
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, 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: 398239, 398240, 398241, 398242, 398243.