EF1 tornado, Okeen to Novice, Texas, April 24, 2015

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

April 24, 2015

Touchdown

3:37 PM CDT (20:37 UTC)

Lifted

3:48 PM CDT (20:48 UTC)

On the ground

11 minutes

Path length

8.4 miles (13.5 km)

Path width

350 yards (320 m)

Deaths

0

Injuries

0

Counties

Runnels and Coleman counties

Touchdown point

31.986, -99.778

Lift-off point

32.014, -99.637

Record number

1504241437-01

7 damage points were recorded along this path by NWS SJT, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 107 mph.

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

An upper level disturbance interacted with an unstable airmass to produce mostly hail across West Central Texas on April 22. Then on the 24th, a much stronger upper level disturbance and an unstable airmass, resulted in a more widespread severe weather outbreak across the region. These supercell thunderstorms produced plenty of hail and damaging thunderstorm winds across the area. As a thunderstorm was developing in northwest Nolan County, it produced a landspout tornado.

A National Weather Survey team found damage from an EF1 tornado that tracked across rural areas of northeast Runnels County into northwest Coleman County. The tornado began about 11 miles east northeast of Winters. The storm crossed the Runnels and Coleman County Line at approximately 5 miles west southwest of Novice and ended about 2 miles north of Novice. The most significant damage was at |FM 1770 and FM 382 where the team observed snapped oak and mesquite tree trunks. This tornado became rain wrapped and was also videotaped by a storm chaser located near Novice.

A National Weather Survey team found damage from an EF1 tornado that tracked across rural areas of northeast Runnels County into northwest Coleman County. The tornado began about 11 miles east northeast of Winters. The storm crossed the Runnels and Coleman County Line at approximately 5 miles west southwest of Novice and ended about 2 miles north of Novice. The most significant damage was at |FM 1770 and FM 382 where the team observed snapped oak and mesquite tree trunks. This tornado became rain wrapped and was also videotaped by a storm chaser located near Novice.

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

1 minute of warning. NWS SJT issued a tornado warning for this county at 20:36 UTC, 1 minute before the tornado touched down, in force until 21:00 UTC.

The county was under a tornado watch, issued at 19:12 UTC and running to 23:27 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 20:01 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 Dyess AFB radar (KDYX), 73 km away, was scanning. The volume nearest the touchdown began at 20:37 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 2015 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

20 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.