S. into Middle Tennessee by the afternoon hours, and through the mid state during the evening hours, thunderstorms developed along and ahead of this weather system.
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.
As a strong low pressure system and associated front moved quickly from the Midwest U.S. into Middle Tennessee by the afternoon hours, and through the mid state during the evening hours, thunderstorms developed along and ahead of this weather system. This thunderstorm development was supported by southerly, rich in moisture, flow that was well established through the upper levels of the atmosphere. The resulting combination of moisture, instability, and lift caused a variety of severe weather to occur in three different counties of the mid state during the evening hours. Damaging thunderstorm winds in Perry County, flash flooding in Montgomery County, and an EF1 Tornado in Sumner County. The tornado in Sumner County downed trees and power lines along with causing damage to several structures.
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 30, 5:56 PM CST, 1 hour 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 656 PM CDT THU JUL 30 2009 .AVIATION...LOOKING AT WIDESPREAD CONVECTION THIS EVENING AND POSSIBLY EXTENDING PAST MIDNIGHT AT CSV. LOW CLOUDS WILL EXTEND INTO TOMORROW MORNING BEFORE DISSIPATING FOLLOWING THE PASSAGE OF THE COLD FRONT. AS A RESULT, WINDS WILL SHIFT AROUND TO THE NORTHWEST DURING THE DAY. && ROSE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 646 PM CDT THU JUL 30 2009 TNZ005>008-022>028-056>062-075-093>095-010000- STEWART-MONTGOMERY-ROBERTSON-SUMNER-BENTON-HOUSTON-HUMPHREYS- DICKSON-CHEATHAM-DAVIDSON-WILSON-PERRY-HICKMAN-LEWIS-WILLIAMSON- MAURY-MARSHALL-RUTHERFORD-BEDFORD-WAYNE-LAWRENCE-GILES- 646 PM CDT THU JUL 30 2009 ...TORNADO WATCH IN EFFECT UNTIL MIDNIGHT TONIGHT... ...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TONIGHT A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WILL GENERATE SEVERE THUNDERSTORMS TONIGHT. THE MOST COMMON THREATS WILL BE TORNADOES...DAMAGING WINDS OR HAIL. FLOODING DUE TO INTENSE RAINFALL IS ALSO LIKELY. RAINFALL AMOUNTS OF 2 INCHES MAY BE COMMON OVERNIGHT. ACTIVITY WILL LIKELY DIMINISH AFTER MIDNIGHT. MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WWW.SRH.NOAA.GOV/OHX OR BY LISTENING TO NOAA WEATHER RADIO. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AN ACTIVE WEATHER PATTERN IS EXPECTED TO REMAIN ACROSS THE AREA INTO EARLY NEXT WEEK...WITH SEVERAL WAVES OF SHOWERS AND THUNDERSTORMS EXPECTED. ISOLATED SEVERE STORMS...AS WELL AS MINOR FLOODING...WILL BE POSSIBLE .SPOTTER INFORMATION STATEMENT... SPOTTER AND EMERGENCY MANAGER ACTIVATION IS REQUESTED FOR TONIGHT. TNZ009>011-029>034-063>066-077>080-010000- MACON-CLAY-PICKETT-TROUSDALE-SMITH-JACKSON-PUTNAM-OVERTON- FENTRESS-CANNON-DEKALB-WHITE-CUMBERLAND-COFFEE-WARREN-GRUNDY- VAN BUREN- 646 PM CDT THU JUL 30 2009 ...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE. .DAY ONE...TONIGHT A STRONG UPPER LEVEL LOW PRESSURE SYSTEM WILL GENERATE STRONG THUNDERSTORMS TONIGHT. THE MOST COMMON THREATS WILL BE ISOLATED SEVERE THUNDERSTORMS WITH DAMAGING WINDS OR HAIL. FLOODING MAY OCCUR DUE TO EXPECTED INTENSE RAINFALL. RAINFALL AMOUNTS OF 1 TO 2 INCHES MAY BE COMMON OVERNIGHT. THIS ACTIVITY WILL LIKELY DIMINISH LATE TONIGHT. MORE INFORMATION IS AVAILABLE ON THE INTERNET AT WWW.SRH.NOAA.GOV/OHX OR BY LISTENING TO NOAA WEATHER RADIO. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AN ACTIVE WEATHER PATTERN IS EXPECTED TO REMAIN ACROSS THE AREA INTO EARLY NEXT WEEK...WITH SEVERAL WAVES OF SHOWERS AND THUNDERSTORMS EXPECTED. ISOLATED SEVERE STORMS...AS WELL AS MINOR FLOODING...WILL BE POSSIBLE .SPOTTER INFORMATION STATEMENT... SPOTTER AND EMERGENCY MANAGER ACTIVATION...MAY BE NECESSARY TONIGHT. JLM
The national radar mosaic for the moment the first event began.
1 thunderstorm wind, 1 flash flood, 1 tornado. Local standard time, as filed.
Trees were downed at the intersection of State Highway 100 and State Highway 412.
Water was covering North Thomas Road near the Tennessee/Kentucky Border in Northeastern Montgomery County.
A few hundred trees were either snapped off or uprooted. Power lines were snapped also in the area. A few homes sustained very light damage with windows blown off. Some homes had shingles blown off. One large barn was flattened. Several outbuildings and carports were also damaged. Winds were estimated between 95 MPH and 100 MPH.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2009Every state in 2009This day in weather historyThe tornado archive for Tennessee, 2009Warnings in Tennessee, July 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: 187091, 187094, 187098.