A weak upper level storm system moving across middle Tennessee, resulted in the development of an isolated severe storm that produced large hail in Franklin County, in southern middle Tennessee.
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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 storm system moving across middle Tennessee, resulted in the development of an isolated severe storm that produced large hail in Franklin County, in southern middle Tennessee.
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 Apr 17, 12:11 PM CST, 1 hour earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 111 PM CDT WED APR 17 2013 .UPDATE... FOR 18Z TAFS && .DISCUSSION... /ISSUED 1015 AM CDT WED APR 17 2013/ A 500MB DISTURBANCE OVER THE NRN GULF WILL CONTINUE TO SHIFT NORTHEASTWARD ACROSS THE SOUTHEAST U.S. THROUGH THE DAY TODAY. THIS WILL INCREASE CLOUD COVER ACROSS THE TENNESSEE VALLEY THIS AFTERNOON, WITH THE POTENTIAL FOR SHOWERS AND STORMS DEVELOPING (MAINLY AFTER 18Z TODAY). SOME OF THE STORMS THIS AFTN MAY BE STRONG, WITH GUSTY WINDS AND SMALL HAIL THE PRIMARY THREATS. SOUNDINGS SHOW A POCKET OF DRY AIR ~700MB, AND LAPSE RATES ARE STEEP ENOUGH TO SUPPORT HAIL PRODUCTION WITHIN CONVECTION LATER TODAY. AM NOT EXPECTING WIDESPREAD COVERAGE, BUT ANY STORMS THAT DO FIRE UP WILL HAVE THIS POTENTIAL, SO THIS WILL BE MONITORED THROUGH THE AFTN/EARLY EVENING. FOR THE PUBLIC FORECAST UPDATE THIS MORNING: CURRENT TEMPERATURES ARE IN THE MIDDLE TO UPPER 70S AS OF THIS WRITING WITH SOUTH/ SOUTHWESTERLY FLOW IN PLACE. AS SUCH, HAVE TWEAKED BOTH AFTERNOON HIGHS UP A DEGREE OR TWO (AS WELL AS THE HOURLY TEMPS). SKY GRIDS WERE ADJUSTED AS WELL, BUT NO MAJOR CHANGES WERE NECESSARY TO THE CURRENT FORECAST. UPDATED ZONES WILL BE SENT SHORTLY. 12 && .AVIATION... FOR 18Z TAFS... VFR CONDITIONS ARE EXPECTED AT BOTH TERMINALS THROUGH MUCH OF THE TAF PERIOD. SHOWERS/STORMS IN THE VICINITY OF KHSV/KMSL MAY DECREASE CEILINGS/VSBYS TEMPORARILY...BUT DID NOT FORMALLY INCLUDE MENTION OF THIS OCCURRENCE DUE TO LOW CONFIDENCE IN DIRECT IMPACTS TO THE TERMINAL ITSELF. OTHERWISE, SCT/BKN CLOUDS ~3KFT WILL LINGER OVERNIGHT, WITH SOME PATCHY BR POSSIBLE AT KMSL AROUND SUNRISE. S/SW WINDS WILL BE GUSTY TOMORROW AHEAD OF AN APPROACHING COLD FRONT. SUSTAINED WINDS ARND 15KTS WITH GUSTS UP TO 25-30KTS ARE POSSIBLE, ESPECIALLY TOMORROW AFTERNOON. 12 && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WEATHER.GOV/HUNTSVILLE.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 141 PM CDT WED APR 17 2013 ALZ001>010-016-TNZ076-096-097-181100- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 141 PM CDT WED APR 17 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...TONIGHT... ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED MAINLY THIS AFTERNOON. THE PRIMARY THREATS WILL BE GUSTY WINDS TO AROUND 40 MPH...SMALL HAIL AND CLOUD TO GROUND LIGHTNING. A FEW STORMS MAY LINGER IN NORTHEASTERN ALABAMA AFTER SUNSET...BUT WILL DIMINISH DURING THE EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... A SQUALL LINE IS EXPECTED TO MOVE ACROSS THE AREA IN ADVANCE OF A COLD FRONT ON THURSDAY NIGHT. DAMAGING WINDS TO 70 MPH WILL BE THE PRIMARY THREAT...WITH A LOWER RISK OF TORNADOES. MOST OF THE ACTIVITY WILL OCCUR FROM LATE THURSDAY EVENING THROUGH THE OVERNIGHT HOURS. THUNDERSTORMS ARE LIKELY TO LINGER IN NORTHEASTERN ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE ON FRIDAY MORNING BEFORE EXITING THE AREA. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE NECESSARY THURSDAY NIGHT INTO FRIDAY MORNING. 12
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 108 PM CDT WED APR 17 2013 ALZ006-008-009-171845- MARSHALL AL-MADISON AL-JACKSON AL- 108 PM CDT WED APR 17 2013 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MARSHALL... SOUTHEASTERN MADISON AND SOUTHWESTERN JACKSON COUNTIES UNTIL 145 PM CDT... AT 107 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A RAPIDLY DEVELOPING STRONG THUNDERSTORM NEAR GRANT...OR 10 MILES NORTH OF GUNTERSVILLE...MOVING NORTHEAST AT 10 MPH. HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... NEW HOPE...WOODVILLE...GRANT AND LANGSTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. && LAT...LON 3436 8632 3451 8647 3472 8626 3452 8604 TIME...MOT...LOC 1806Z 228DEG 8KT 3450 8633 12
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
125 PM CDT WED APR 17 2013
TNZ097-171915-
FRANKLIN TN-
125 PM CDT WED APR 17 2013
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN FRANKLIN COUNTY UNTIL
215 PM CDT...
AT 125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SEWANEE...OR 8 MILES EAST OF WINCHESTER...
MOVING EAST AT 5 MPH.
HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE
POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
SEWANEE AND COWAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 3528 8591 3522 8586 3507 8586 3506 8601
3524 8607 3529 8593
TIME...MOT...LOC 1824Z 256DEG 5KT 3517 8596
12/31The Northeast Alabama radar (KHTX), 29 km away, was scanning. The volume nearest the first event began at 19:13 UTC.
1 hail. Local standard time, as filed.
Golf ball sized hail was reported on Hawkins Cove road, near Alto, Tennessee.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2013Every state in 2013This day in weather historyWarnings in Tennessee, April 2013
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: 435238.