EF0 tornado, Acton, Texas, May 3, 2021

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.

Rating

EF0

Date

May 3, 2021

Touchdown

6:02 PM CDT (23:02 UTC)

Lifted

6:04 PM CDT (23:04 UTC)

On the ground

2 minutes

Path length

0.4 miles (0.6 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

Property damage

$500

County

Hood County

Touchdown point

32.440, -97.741

Lift-off point

32.445, -97.743

Record number

2105031702-01

3 damage points were recorded along this path by NWS FWD, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 65 mph.

• Small shed destroyed and damage to trees

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

Numerous severe thunderstorms erupted along a cold front in the afternoon and evening hours. Many of the storms produced large hail, and a total of 6 tornadoes were recorded. The most significant tornado was an EF-2 in Ellis County, but an EF-2 tornado also occurred in Hill County. Several reports of golf ball sized hail were received, but the largest hail stone reported was 3 inches in Johnson County.

A tornado formed along Davis Road in east Granbury and traveled slowly north-northwest. Spotter videos show the tornado was occurring for approximately 2 minutes with debris consisting mainly of leaves and small branches being lofted into the air. Damage to a car port and some mature trees occurred along the path. The tornado dissipated as it approached Highway 377. Maximum winds were estimated at 65 mph with a width of 50 yards.

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

0 minutes of warning. NWS FWD issued a tornado warning for this county at 23:02 UTC, 0 minutes before the tornado touched down, in force until 23:30 UTC.

The county was under a tornado watch, issued at 20:50 UTC and running to 03:22 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:40 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.

Granbury (GDJ), 7 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The Dallas/Ft Worth radar (KFWS), 44 km away, was scanning. The volume nearest the touchdown began at 23:02 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 2021 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

30 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.