As an area of showers and thunderstorms moved west to east across southern middle Tennessee during the mid afternoon hours on August 11th, thunderstorms produced heavy rainfall that resulted in flash flooding across southeastern portions of Wayne and southwestern portions of Lawrence Counties, resulting in water over several roadways across this region.
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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.
As an area of showers and thunderstorms moved west to east across southern middle Tennessee during the mid afternoon hours on August 11th, thunderstorms produced heavy rainfall that resulted in flash flooding across southeastern portions of Wayne and southwestern portions of Lawrence Counties, resulting in water over several roadways across this region.
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 11, 2:48 PM CST, 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 348 PM CDT TUE AUG 11 2009 .SHORT TERM (TNGT-WED)... SCT TSRA W MID TN MOVG ESE AT 20 MPH. MARGINAL SITUATION WITH CLOUDS COOLING TEMPS DOWNSTREAM OF STORMS. STILL A FEW STORMS COULD PRODUCE DAMAGING WINDS AND HAIL NEAR AL BORDER NEXT COUPLE OF HOURS. FNTL BDRY AND DRIER AIR WL MOVE ACR REGION LATER TNGT. PCPN WL DECREASE. COOLER H5 AIR AND LINGERING SFC DEWPTS COULD HELP GENERATE ISO-SCT TRW WED...MAINLY IN AFTERNOON HEAT. .LONG TERM (THU-TUE)...UPR TROUGH WEAKENS AND STALLS E CONUS THU- FRI. MOISTURE STREAMS BACK W BUT LITTLE EXPECTED TO GET AS FAR AS THE PLATEAU. BUT WL BUY INTO DIURNAL ISO-SCT POP SCENARIO THIS WEEKEND. && .PREV DISCUSSION... /ISSUED 228 PM CDT TUE AUG 11 2009/ MESOSCALE UPDATE... H5 TROUGH OVR MID MS VLY HEADING E. SCT TSRA STARTING NEAR TN RVR IN W MID TN ATTM...WITH SOME DOWNSTREAM CAPE. CONVECTIVE TRENDS SHOW MOD DESTAB S MID TN. EARLIER CONVECTION/CLOUDS STABILIZED N. UPDATE TO LIMIT THE CHANCE OF SVR FOR METRO NASHVILLE SOUTH REST OF THE AFTERNOON...BASICALLY SOUTH OF I-40. && .PRELIMINARY POINT TEMPS/POPS... NASHVILLE 70 88 66 90 / 60 20 0 0 CLARKSVILLE 67 89 64 89 / 50 0 0 0 CROSSVILLE 65 82 62 84 / 70 40 10 10 COLUMBIA 70 88 66 90 / 70 20 0 10 LAWRENCEBURG 70 88 66 90 / 70 30 0 10 WAVERLY 69 89 64 90 / 40 0 0 0 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 04
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 500 AM CDT TUE AUG 11 2009 TNZ005>011-022>034-056>066-075-077>080-093>095-121030- 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-DEKALB-WHITE- CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE- GILES- 500 AM CDT TUE AUG 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT A WEAK SURFACE FRONT WILL PASS THROUGH MIDDLE TENNESSEE TODAY AND TONIGHT, AND IS EXPECTED TO BRING THUNDERSTORMS TO THE AREA. IT IS POSSIBLE THAT A FEW OF THESE STORMS COULD BECOME SEVERE, WITH DAMAGING WIND AND LARGE HAIL BEING THE PRIMARY THREATS. IN ADDITION, TORRENTIAL RAINFALL FROM THUNDERSTORMS MAY ALSO PRODUCE BRIEF, MINOR FLOODING AND PONDING ON ROADWAYS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER AND EMERGENCY MANAGER ACTIVATION MAY BE NEEDED. ROSE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NASHVILLE TN 423 PM CDT TUE AUG 11 2009 TNZ093-094-112230- WAYNE-LAWRENCE- INCLUDING THE CITIES OF...WAYNESBORO...LAWRENCEBURG 423 PM CDT TUE AUG 11 2009 ...STRONG THUNDERSTORMS IN SOUTHWEST MIDDLE TENNESSEE... AT 420 PM CDT...A CLUSTER OF STRONG THUNDERSTORMS CONTAINING FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY DOWNPOURS OF RAIN WAS LOCATED ACROSS SOUTHERN WAYNE INTO SOUTHWEST LAWRENCE COUNTIES. ONE HOUR RAINFALL AMOUNTS ARE APPROACHING 2 INCHES JUST EAST OF COLLINWOOD. MOTORISTS ARE URGED TO BE ON THE LOOKOUT FOR PONDING OF WATER ALONG THE NATCHEZ TRACE PARKWAY JUST EAST OF COLLINWOOD. BOYD
The Columbus AFB radar (KGWX), 132 km away, was scanning. The volume nearest the first event began at 21:41 UTC.
2 flash flood. Local standard time, as filed.
Water was reported over roadways in southeast Wayne County by the Wayne County News.
Water was reported over several roadways in southwestern portions of the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2009Every state in 2009This day in weather historyWarnings in Tennessee, August 2009
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: 192844, 192843.