Tornadoes · United States · Tennessee · 2025

EF0 tornado, Sinking Cove, Tennessee, August 20, 2025

This EF0 tornado ran 0.3 miles across Franklin County on August 20, 2025, touching down at 3:47 PM CDT and reaching 100 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mphthis tornado

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
EF0
Date
August 20, 2025
Touchdown
3:47 PM CDT (20:47 UTC)
Lifted
3:48 PM CDT (20:48 UTC)
On the ground
1 minutes
Path length
0.3 miles (0.4 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Franklin County
Touchdown point
35.005, -85.961
Lift-off point
35.002, -85.960
Record number
2508201447-01

The damage survey

4 damage points were recorded along this path by NWS HUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 85 mph.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

A cluster of thunderstorms developed during the early to mid afternoon hours. One of the thunderstorms spawned a rare August tornado, knocking down numerous trees along a short path along Little Crow Creek in Southern Franklin County.

An EF-0 tornado touched down on Sinking Cove Road causing several uprooted trees. It briefly tracked south-southeast uprooting additional trees, passing across Little Crow Creek before lifting|just northwest of The Bolo Club on Sinking Cove Road where no additional tree damage was noted. Damage was assessed via drone footage taken by Jackson County Alabama Emergency Management in|coordination with Franklin County Tennessee Emergency Management.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

3 minutes of warning. NWS HUN issued a tornado warning for this county at 20:44 UTC, 3 minutes before the tornado touched down, in force until 21:01 UTC.

Issued (UTC)ExpiredProductOffice
19:41 UTC20:20 UTCSevere Thunderstorm WarningHUN
20:37 UTC21:30 UTCSevere Thunderstorm WarningHUN
20:44 UTC21:01 UTCTornado WarningHUN
20:57 UTC21:29 UTCSevere Thunderstorm WarningHUN

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Marginal Risk. The outlook in force was issued at 19:58 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Nashville Metro, TN (KBNA), 12:00Z

8.8 hours before the tornado, 138 km from the path. August 20, 2025.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2025-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 250 joules per kilogram, CIN -152, lifted condensation level 1093 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2025-08-20The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -38 square meters per square second, 0 to 6 km bulk shear 8 knots.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
250 J/kg
Mixed-layer CIN
-152 J/kg
Surface CAPE
485 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
8 kt
0-1 km bulk shear
8 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 00:00Z

3.2 hours after it, 138 km from the path. August 21, 2025.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2025-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 891 joules per kilogram, CIN -5, lifted condensation level 1161 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2025-08-21The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -26 square meters per square second, 0 to 6 km bulk shear 5 knots.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
891 J/kg
Mixed-layer CIN
-5 J/kg
Surface CAPE
2263 J/kg
Mixed-layer LCL
1161 m above ground
0-6 km bulk shear
5 kt
0-1 km bulk shear
9 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
-40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
7.1 K/km

Open this sounding in Storm Lab

The radar

The Northeast Alabama radar (KHTX), 14 km away, was scanning. The volume nearest the touchdown began at 20:45 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
18:45 UTCTSTM WND DMG4 Ene Estill SpringsFranklin, TNMultiple trees were knocked down in Capitol Hill. Time estimated by radar.
20:03 UTCTSTM WND DMG1 Ene DecherdFranklin, TNMultiple trees were knocked down at 7000 Highway 50 in Decherd. Time estimated by radar.
20:45 UTCTSTM WND DMG12 Sse CowanFranklin, TNMultiple trees down near The Bolo Club.
20:47 UTCTORNADO11 Sse CowanFranklin, TNAn EF0 tornado touched down along Sinking Cove Road and tracked to the south, crossing Little Crow Creek. Only tree damage was noted with softwoods uprooted and branches down. The tornado lasted one minute before lifting

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2025 tornado in TennesseeEvery tornado in Tennessee since 1950Warnings in force in Tennessee nowThe forecast where you are

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.