EF1 tornado, Greenhaw to Rowark Cove, Tennessee, March 24, 2020

1. EF065 to 85 mph

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

2. EF186 to 110 mphthis tornado

   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.

Rating

EF1

Date

March 24, 2020

Touchdown

7:16 PM CDT (00:16 UTC)

Lifted

7:25 PM CDT (00:25 UTC)

On the ground

9 minutes

Path length

4.8 miles (7.7 km)

Path width

175 yards (160 m)

Deaths

0

Injuries

0

County

Franklin County

Touchdown point

35.221, -86.010

Lift-off point

35.239, -85.928

Record number

2003241816-01

9 damage points were recorded along this path by NWS HUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 95 mph.

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

Multiple supercell clusters developed in northern Mississippi and western Tennessee during the late afternoon hours, which moved east across southern middle Tennessee during the mid evening hours. One of these storms produced an EF-1 tornado in Franklin County. Several reports of wind damage were received. Also, several reports of flash flooding were received in Franklin County following the thunderstorms and intense rainfall.

An EF-1 tornado with maximum winds of 95 MPH struck east central Franklin County from 2 miles north of Cown to 2 miles north-northwest of Sewanee. The main damage indicators|were a combination of hard and softwood trees with either branches snapped, trunks snapped, or uprooted. The area of concentrated damage was first observed near Greenshaw Road near Wagner Creek where a couple of trees were uprooted. The tornado ascended up the ridge and snapped several trees as it approached the Cedar Mt. Place area. This damage coincided with a distinct and brief tornado debris signature (TDS) on the KHTX radar. A Franklin County Emergency Management Agency drone was able to capture the path from the valley west of Cedar Mt. Place and eastward toward Cedar Mt. Court. Sporadic damage reports were noted as the tornado descended the ridge near the Roarks Cove area.

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

31 minutes of warning. NWS HUN issued a tornado warning for this county at 23:45 UTC, 31 minutes before the tornado touched down, in force until 00:30 UTC.

The county was under a tornado watch, issued at 20:08 UTC and running to 02:12 UTC.

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 Storm Prediction Center had this point in a Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 19:54 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 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.

The Northeast Alabama radar (KHTX), 35 km away, was scanning. The volume nearest the touchdown began at 00:16 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.

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

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

The live radar over the trackEvery 2020 tornado in TennesseeEvery tornado in Tennessee since 1950Warnings in force in Tennessee nowThe forecast where you are

1 more were confirmed in the United States that day.

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.

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