Tornadoes · United States · Oklahoma · 2022

Unrated tornado, Tahlequah Arpt, Oklahoma, May 2, 2022

This Unrated tornado ran 0.1 miles across Cherokee County on May 2, 2022, touching down at 9:03 PM CDT and reaching 75 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  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.

The record

Rating
Unrated
Date
May 2, 2022
Touchdown
9:03 PM CDT (02:03 UTC)
Path length
0.1 miles (0.2 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
County
Cherokee County
Touchdown point
35.891, -95.024
Lift-off point
35.891, -95.024
Record number
2205022003-01

What the Weather Service recorded

Thunderstorms developed across northern Texas and eastern Oklahoma during the early morning hours of the 2nd, as a warm front approached the area from the south. The strongest storm produced damaging wind gusts in Choctaw County.||Thunderstorms redeveloped across portions of southeastern Oklahoma during the afternoon. Strong instability south of the warm front, combined with strong wind shear, supported an environment for supercell thunderstorms. One such storm produced a tornado and damaging wind in Le Flore County. ||Another round of severe thunderstorms, which developed along the dry line across central Oklahoma during the afternoon, moved through eastern Oklahoma during the evening in the form of a squall line. The strongest storms within this line produced damaging wind gusts and large hail up to quarter size. A brief tornado also occurred in Cherokee County.

A brief tornado was observed over open country by emergency management. The tornado occurred in an area inaccessible by road, thus any damage that the tornado produced couldn't be evaluated.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

The county was under a tornado watch, issued at 19:02 UTC and running to 03:00 UTC.

Issued (UTC)ExpiredProductOffice
13:24 UTC13:47 UTCFlood AdvisoryTSA
13:26 UTC17:12 UTCFlood AdvisoryTSA
19:02 UTC03:00 UTCTornado WatchTSA
01:11 UTC02:00 UTCSevere Thunderstorm WarningTSA
01:31 UTC01:39 UTCTornado WarningTSA
01:57 UTC03:55 UTCFlood AdvisoryTSA
01:57 UTC02:45 UTCSevere Thunderstorm WarningTSA
02:01 UTC02:45 UTCSevere Thunderstorm WarningTSA

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 forecast that day

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 00:45 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 air that afternoon

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.

Springfield, MO (KSGF), 00:00Z

2.1 hours before the tornado, 157 km from the path. May 3, 2022.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2022-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -92988, lifted condensation level 991 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Springfield, MO at 00:00Z on 2022-05-03The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 214 square meters per square second, 0 to 6 km bulk shear 40 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-92988 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
991 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
214 m²/s²
0-3 km storm-relative helicity
355 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

Springfield, MO (KSGF), 12:00Z

9.9 hours after it, 157 km from the path. May 3, 2022.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2022-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -101192, lifted condensation level 587 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Springfield, MO at 12:00Z on 2022-05-03The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 81 square meters per square second, 0 to 6 km bulk shear 40 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-101192 J/kg
Surface CAPE
16 J/kg
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
40 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
2.7 K/km

Open this sounding in Storm Lab

The surface observations

Tahlequah Municipal (TQH), 5 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
00:15 UTC66.260.8120° 6 kt1006.1
00:35 UTC66.260.8120° 4 kt1006.8
00:55 UTC66.260.8110° 5 kt1006.4
01:15 UTC66.260.8110° 3 kt1006.4
01:35 UTC66.260.8110° 6 kt1006.4
01:55 UTC66.260.8140° 4 kt1006.4HZ
02:15 UTC66.260.8340° 17 kt291007.5HZ
02:35 UTC66.260.8180° 8 kt151006.8HZ
02:55 UTC64.459220° 12 kt181007.1HZ
03:15 UTC62.657.2170° 8 kt151005.1HZ
03:35 UTC62.657.2190° 7 kt1006.4
03:55 UTC62.657.20° 0 kt1005.8

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

The radar

The Tulsa radar (KINX), 58 km away, was scanning. The volume nearest the touchdown began at 02:04 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.

This ground now

The live radar over the trackEvery 2022 tornado in OklahomaEvery tornado in Oklahoma since 1950Warnings in force in Oklahoma nowThe forecast where you are

The other tornadoes of May 2, 2022

10 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 23:25 PM CDTEF0Comanche, KS1.735
May 23:46 PM CDTEF0Comanche, KS0.525
May 24:13 PM CDTEF0Kingfisher, OK0.680
May 24:22 PM CDTEF0Kingfisher, OK0.980
May 24:36 PM CDTEF0Caddo, OK1.610$30,000
May 25:13 PM CDTEF0Caddo, OK0.5240$100,000
May 25:18 PM CDTEF1LeFlore, OK5.61,400$100,000
May 25:57 PM CDTUnratedNoble, OK1.4150
May 26:26 PM CDTEF1Payne, OK6.5500$50,000
May 27:52 PM CDTEF1Seminole, OK6.3700$150,000

What this means

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.

Sources

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