Unrated tornado, Osage to Carrollton, Arkansas, April 28, 2024

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 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. Unratedthis tornado

   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

Unrated

Date

April 28, 2024

Touchdown

10:15 PM CDT (03:15 UTC)

Lifted

10:19 PM CDT (03:19 UTC)

On the ground

4 minutes

Path length

2.1 miles (3.4 km)

Path width

75 yards (69 m)

Deaths

0

Injuries

0

County

Carroll County

Touchdown point

36.214, -93.367

Lift-off point

36.239, -93.345

Record number

2404282115-01

2 damage points were recorded along this path by NWS TSA, in the Damage Assessment Toolkit the survey teams carry.

• Likely ending point based on radar data, and time-stamped tower cam video provided by KNWA.
• Likely beginning point based on radar data, and time-stamped tower cam video provided by KNWA.

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

Severe thunderstorms developed across eastern Oklahoma during the afternoon of the 28th, and moved into northwestern Arkansas during the evening. The thunderstorms produced damaging wind in Benton County, and one of the stronger storms produced a tornado in Carroll County.

This tornado was recorded by a KNWA tower cam, with time stamps provided by KNWA to the NWS Tulsa. The location was estimated based on radar data for the period of time the tornado occurred in the video recording. The path is in heavily wooded terrain, inaccessible by road, so no damage is known to have occurred with the tornado. Thus, the rating of EF-unknown.

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

7 minutes of warning. NWS TSA issued a tornado warning for this county at 03:08 UTC, 7 minutes before the tornado touched down, in force until 03:41 UTC.

The county was under a tornado watch, issued at 22:15 UTC and running to 03:43 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 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 01:12 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 Springfield radar (KSGF), 112 km away, was scanning. The volume nearest the touchdown began at 03:11 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 2024 tornado in ArkansasEvery tornado in Arkansas since 1950Warnings in force in Arkansas nowThe forecast where you are

18 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.