A weak upper level system moved through southern middle Tennessee during the afternoon hours on the 28th, resulting in the development of an isolated severe thunderstorm in Franklin County, Tennessee. The severe storm produced some isolated wind damage in the county.
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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 HUN wrote it up.
A weak upper level system moved through southern middle Tennessee during the afternoon hours on the 28th, resulting in the development of an isolated severe thunderstorm in Franklin County, Tennessee. The severe storm produced some isolated wind damage in the county.
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 Huntsville, AL wrote its last area forecast discussion before the first event at Jul 28, 1:54 PM CST, 56 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HUNTSVILLE AL 254 PM CDT TUE JUL 28 2015 .DISCUSSION... THE 19Z SURFACE ANALYSIS INDICATED THAT TEMPS WERE RANGING FROM THE MID TO UPPER 90S ACROSS THE FORECAST AREA WITH HEAT INDICES RANGING FROM 100 TO 107 DEGREES. ISOLATED/WIDELY SCATTERED SHRA/TSRA WERE CONTINUING TO DEVELOP ACROSS SOUTHERN MIDDLE TENNESSEE THROUGH NORTH ALABAMA. MOST OF THE ACTIVITY HAS BEEN QUICKLY DEVELOPING/DISSIPATING AS EXPECTED. WILL CONTINUE HEAT ADVISORY THROUGH THE REST OF THE AFTERNOON THROUGH WEDNESDAY AFTERNOON. THE ISOLATED SHRA/TSRA THIS AFTERNOON WILL QUICKLY DISSIPATE BY AROUND 00Z THIS EVENING. THE SHORT TERM MODELS ARE STILL INDICATING THAT A WEAK SHORTWAVE AT 500 MILLIBARS WILL DROP SOUTHEAST THROUGH WEST TENNESSEE BY 12Z WEDNESDAY. THE NAM MODEL IS CONSISTENTLY INDICATING THAT SCATTERED SHRA/TSRA MAY DEVELOP TO THE NORTH OF THE FORECAST AREA AND MOVE SOUTHWARD THROUGH THE AREA DURING WEDNESDAY MORNING. WILL CONTINUE WITH AROUND 30 POPS ESPECIALLY DURING THE MORNING. THE SHORT TERM MODELS ARE CONSISTENT IN DROPPING THE SHORTWAVE ENERGY AND SCATTERED SHRA/TSRA MAINLY SOUTH OF THE FORECAST AREA BETWEEN 18Z WEDNESDAY-00Z THURSDAY. BETWEEN 00Z THURSDAY-12Z THURSDAY...A TRAILING AND WEAKENING COLD FRONT IS PROGGED BY THE MODELS TO MOVE FROM ALONG THE OHIO RIVER IN WESTERN KENTUCKY...INTO SOUTHERN MIDDLE TENNESSEE. THE MODELS SHIFT THE COLD FRONT THROUGH THE FORECAST AREA BETWEEN 18Z THURSDAY-00Z FRIDAY. WILL CONTINUE WITH SCATTERED SHRA/TSRA DURING THIS TIME FRAME FOR THE FORECAST AREA. MODELS DO BRING IN LOW-MID 60S DEWPOINTS INTO THE FORECAST AREA BETWEEN FRIDAY NIGHT-SATURDAY MORNING IN THE WAKE OF THE COLD FRONT AND WILL CONTINUE WITH THIS SOLUTION. HAVE HELD BACK A TAD FROM INCREASING TEMPS ON SATURDAY UP TO GUIDANCE NUMBERS. THE HIGH PRESSURE RIDGE AXIS IS PROGGED BY THE GFS/ECMWF MODELS TO SHIFT SOUTHEAST THROUGH THE LOWER OHIO AND INTO THE TENNESSEE VALLEY REGION BETWEEN SATURDAY AND MONDAY WITH A NORTHWEST FLOW EXPECTED TO SET UP. A WEAK BOUNDARY IS EXPECTED TO MOVE SOUTHEAST THROUGH THE NORTHWEST FLOW INTO THE REGION BY TUESDAY AFTERNOON...SO WILL CONTINUE WITH A SLIGHT CHANCE POP AT THE END OF THE EXTENDED FORECAST PERIODS. WILL STAY CLOSE TO FORECAST GUIDANCE TEMPS THROUGH THE END OF THE EXTENDED FORECAST. TT && .AVIATION... /ISSUED 1238 PM CDT TUE JUL 28 2015/ FOR 18Z TAFS... VFR CONDITIONS ARE EXPECTED TO PREVAIL FOR THE KMSL AND KHSV TERMINALS THROUGH THE FORECAST PERIOD. ISOLATED TO SCATTERED THUNDERSTORMS HAVE DEVELOPED OVER THE LAST HOUR AND MAY IMPACT THE TERMINALS. HOWEVER...GIVEN THE COVERAGE AND UNCERTAINTY...WILL ONLY CARRY VCTS IN THE TAFS. AMENDMENTS MAY BE NECESSARY AS THE AFTERNOON PROGRESSES IF THUNDERSTORM COVERAGE INCREASES. ANY THUNDERSTORM ACTIVITY THAT DOES DEVELOP WILL DIMINISH THIS EVENING. THERE IS A CHANCE FOR MVFR MIST TO DEVELOP ONCE AGAIN WEDNESDAY MORNING...HOWEVER CONFIDENCE IS TOO LOW TO MENTION IN THE TAFS FOR NOW. 73 && .PRELIMINARY POINT TEMPS/POPS... HUNTSVILLE 76 96 76 95 / 20 30 30 40 SHOALS 76 97 76 95 / 20 30 30 40 VINEMONT 75 94 74 92 / 20 30 20 40 FAYETTEVILLE 74 92 74 91 / 20 30 30 40 ALBERTVILLE 74 91 74 92 / 20 30 20 40 FORT PAYNE 74 92 72 91 / 20 30 20 40 && .HUN WATCHES/WARNINGS/ADVISORIES... AL...HEAT ADVISORY UNTIL 7 PM CDT WEDNESDAY FOR ALZ001>007-016. TN...NONE. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WEATHER.GOV/HUNTSVILLE.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 218 PM CDT TUE JUL 28 2015 ALZ001>010-016-TNZ076-096-097-290330- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 218 PM CDT TUE JUL 28 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL LEAD TO DANGEROUS HEAT INDEX VALUES OF 105 TO 110 DEGREES ACROSS NORTHWEST AND NORTH CENTRAL ALABAMA THIS AFTERNOON. A HEAT ADVISORY REMAINS IN EFFECT FOR THIS PORTION OF NORTH ALABAMA. ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE FOR THE ENTIRE REGION...WITH ACTIVITY DIMINISHING DURING THE EVENING HOURS. WIND GUSTS OF 30 TO 40 MPH AND FREQUENT LIGHTNING WILL BE POSSIBLE WITH THE STRONGEST STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... A HEAT ADVISORY WILL REMAIN IN EFFECT FOR NORTHWEST AND NORTH CENTRAL ALABAMA THROUGH 7 PM CDT WEDNESDAY. HEAT INDEX VALUES OF 105 TO 110 DEGREES ARE EXPECTED AGAIN ON WEDNESDAY AFTERNOON ACROSS NORTHWEST AND NORTH CENTRAL ALABAMA. A SLIGHTLY GREATER COVERAGE OF THUNDERSTORMS IS EXPECTED DURING THE PERIOD FROM WEDNESDAY THROUGH THURSDAY...AHEAD OF A SOUTHWARD MOVING COLD FRONT. A FEW STRONG TO MARGINALLY SEVERE STORMS WILL BE POSSIBLE...ESPECIALLY ON WEDNESDAY AFTERNOON...WITH DAMAGING WINDS THE MAIN THREAT. THUNDERSTORMS WILL END ACROSS THE SOUTHEAST COUNTIES THURSDAY EVENING...AS THE COLD FRONT CONTINUES TO PUSH SOUTHWARD INTO CENTRAL ALABAMA. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
335 PM CDT TUE JUL 28 2015
TNZ076-097-282115-
MOORE TN-FRANKLIN TN-
335 PM CDT TUE JUL 28 2015
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MOORE AND FRANKLIN
COUNTIES UNTIL 415 PM CDT...
AT 335 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
TIMS FORD LAKE...OR NEAR WINCHESTER...MOVING SOUTHEAST AT 25 MPH.
WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
WINCHESTER...DECHERD...ESTILL SPRINGS...COWAN...HUNTLAND...TIMS FORD
LAKE...SEWANEE...ANDERSON...HARMONY AND SHERWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM THE PARENT THUNDERSTORM.
SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 3522 8593 3499 8586 3499 8632 3513 8632
3512 8633 3513 8635 3522 8636 3529 8617
TIME...MOT...LOC 2035Z 328DEG 23KT 3521 8623
KULAThe Northeast Alabama radar (KHTX), 34 km away, was scanning. The volume nearest the first event began at 20:48 UTC.
2 thunderstorm wind. Local standard time, as filed.
A few trees were downed by thunderstorm winds.
A few trees were downed by thunderstorm winds.
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: 594964, 594965.