EF1 tornado, Stella to Aydelotte, Oklahoma, February 26, 2023

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

February 26, 2023

Touchdown

9:42 PM CST (03:42 UTC)

Lifted

9:48 PM CST (03:48 UTC)

On the ground

6 minutes

Path length

6.0 miles (9.7 km)

Path width

440 yards (402 m)

Deaths

0

Injuries

0

Property damage

$105,000

Counties

Cleveland and Pottawatomie counties

Touchdown point

35.376, -97.146

Lift-off point

35.411, -97.054

Record number

2302262142-01

119 damage points were recorded along this path by NWS OUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF2. The highest wind the damage implies is 132 mph.

• House with almost no damage.
• No apparent damage to the house
• Brick facade on west side collapsed. Soffits blew out, damaged gutters.
• Post oaks are typically tougher than avg. picture facing S west of house.

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

A powerful storm system, with highly anomalous magnitudes of wind shear and moisture for late February, impacted the forecast area on the evening of the 26th. A broken line of severe thunderstorms developed across the eastern Texas Panhandle/far western Oklahoma and quickly swept through much of the forecast area. Widespread wind damage, including gusts near 90 mph, along with a record number of tornadoes (13) for February occurred. Several reports of large hail were also received. Behind the line of thunderstorms, a tight pressure gradient and strong westerly low-level jet allowed widespread 50-60 mph winds gusts to continue through the late evening hours.

A tornado developed just inside Cleveland County southwest of the intersection of Southeast 89th Street and Pottawatomie Road. A house and outbuilding suffered roof damage. The tornado moved east one-quarter of a mile before crossing Pottawatomie Road and moving into Pottawatomie County.

This tornado moved out of Cleveland County crossing Pottawatomie Road just southeast of 89th Street/Memorial Road. The tornado moved east-northeast producing tree damage, roof damage to a home and flipping an RV as it approached Interstate 40. The tornado continued to produce tree and power pole damage moving east and northeast before dissipating after crossing State Highway 270 just north of Garretts Lake Road.

This tornado developed just north of the Shawnee Mall on the north side of Shawnee and raced to the north-northeast creating tree damage and damage to a pivot irrigator. Several power poles were damaged along Wolverine Road near Harrison Avenue before the tornado turned northeast moving through a neighborhood near Moccassin Trail Road and Bryan Road. Several homes in this neighborhood had significant roof damage with at least one home losing its entire roof. The tornado continues producing tree, power pole, fence and outbuilding damage before crossing into Lincoln County near Brangus Road.

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

27 minutes of warning. NWS OUN issued a tornado warning for this county at 03:15 UTC, 27 minutes before the tornado touched down, in force until 04:00 UTC.

The county was under a tornado watch, issued at 01:33 UTC and running to 04:35 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 Moderate Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 00:59 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.

Shawnee Municipal Airport (SNL), 15 km from the path, in the two hours either side.

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

The Norman radar (KTLX), 17 km away, was scanning. The volume nearest the touchdown began at 03:42 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 2023 tornado in OklahomaEvery tornado in Oklahoma since 1950Warnings in force in Oklahoma nowThe forecast where you are

15 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.