Tornadoes · United States · Oklahoma · 2023

Unrated tornado, Carter Nine, Oklahoma, January 2, 2023

This Unrated tornado ran 0.1 miles across Osage County on January 2, 2023, touching down at 4:37 PM CST and reaching 100 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
January 2, 2023
Touchdown
4:37 PM CST (22:37 UTC)
Lifted
4:38 PM CST (22:38 UTC)
On the ground
1 minutes
Path length
0.1 miles (0.2 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Osage County
Touchdown point
36.722, -96.619
Lift-off point
36.722, -96.617
Record number
2301021637-01

What the Weather Service recorded

Unseasonably warm, moist, and unstable air was in place across eastern Oklahoma on January 2nd, ahead of an approaching cold front and strong upper level disturbance. Strong to severe thunderstorms developed into and across eastern Oklahoma during the|afternoon and evening. The moderately unstable air combined with strong deep-layer and low-level wind shear resulted in the evolution of some of the thunderstorms into supercells. Several of these supercells produced tornadoes, along with large hail up to ping pong ball size and damaging wind gusts.

A tornado was witnessed by multiple people from multiple locations. The tornado was over open country, and no known damage occurred.

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.

The county was under a tornado watch, issued at 21:34 UTC and running to 01:06 UTC.

Issued (UTC)ExpiredProductOffice
21:34 UTC01:06 UTCTornado WatchTSA

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 Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:58 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.

Norman, OK (KOUN), 12:00Z

10.6 hours before the tornado, 181 km from the path. January 2, 2023.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2023-01-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 8 joules per kilogram, CIN -399, lifted condensation level 1122 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 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, Norman, OK at 12:00Z on 2023-01-02The 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 191 square meters per square second, 0 to 6 km bulk shear 49 knots.1939587897Sfc1 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
8 J/kg
Mixed-layer CIN
-399 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
1122 m above ground
0-6 km bulk shear
49 kt
0-1 km bulk shear
24 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.8 K/km

Open this sounding in Storm Lab

Norman, OK (KOUN), 00:00Z

1.4 hours after it, 181 km from the path. January 3, 2023.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2023-01-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1112 joules per kilogram, CIN -26, lifted condensation level 965 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 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, Norman, OK at 00:00Z on 2023-01-03The 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 72 square meters per square second, 0 to 6 km bulk shear 52 knots.1939587897117Sfc1 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
1112 J/kg
Mixed-layer CIN
-26 J/kg
Surface CAPE
1467 J/kg
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
52 kt
0-1 km bulk shear
20 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.4
0-3 km lapse rate
6.7 K/km

Open this sounding in Storm Lab

The surface observations

Ponca City Municipal (PNC), 43 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
20:41 UTC6661130° 4 kt1001.7
20:45 UTC130° 2 kt1001.4
20:50 UTC0° 0 kt1001.4
20:53 UTC6761170° 4 kt1001.7
20:55 UTC170° 4 kt1001.7
21:00 UTC160° 7 kt1002
21:05 UTC160° 9 kt1001.7
21:15 UTC160° 7 kt1002
21:20 UTC170° 5 kt1002
21:25 UTC170° 5 kt1002
21:30 UTC160° 5 kt1002
21:40 UTC150° 5 kt1001.7
21:45 UTC150° 7 kt1001.7
21:50 UTC150° 5 kt1001.7
21:53 UTC6661150° 7 kt1001.4
21:55 UTC150° 5 kt1001.4
22:00 UTC160° 4 kt1001.4
22:05 UTC150° 5 kt1001
22:10 UTC150° 5 kt1001
22:15 UTC140° 7 kt1001.4
22:20 UTC140° 8 kt1001.4
22:30 UTC140° 5 kt1001.4
22:35 UTC150° 5 kt1001.7
22:40 UTC150° 4 kt1001.7
22:45 UTC170° 5 kt1001.7
22:53 UTC6661170° 5 kt1001.7
22:55 UTC170° 5 kt1001.4
23:00 UTC170° 5 kt1001.4
23:05 UTC170° 5 kt1001.4
23:10 UTC180° 5 kt1001.4
23:20 UTC180° 5 kt1001.4
23:25 UTC200° 5 kt1001
23:30 UTC200° 4 kt1001
23:35 UTC190° 5 kt1001
23:40 UTC190° 4 kt1001
23:45 UTC190° 4 kt1001.4
23:50 UTC180° 4 kt1001
23:53 UTC6359180° 4 kt1001
23:55 UTC180° 4 kt1001
00:05 UTC180° 4 kt1001
00:10 UTC180° 4 kt1001
00:15 UTC190° 2 kt1001.4
00:20 UTC190° 2 kt1001.4BR
00:25 UTC190° 4 kt1001.4BR
00:30 UTC190° 2 kt1001.4BR
00:35 UTC190° 2 kt1001.4BR

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

The radar

The Tulsa radar (KINX), 112 km away, was scanning. The volume nearest the touchdown began at 22:36 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
22:38 UTCTORNADO5 Se ShidlerOsage, OKA BRIEF TORNADO OCCURRED OVER OPEN COUNTRY. IT WAS OBSERVED BY SEVERAL PEOPLE FROM VARIOUS LOCATIONS. NO KNOWN DAMAGE OCCURRED, SO IT WILL BE RATED EF-UNKNOWN.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2023 tornado in OklahomaEvery tornado in Oklahoma since 1950Warnings in force in Oklahoma nowThe forecast where you are

The other tornadoes of January 2, 2023

14 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
January 211:47 AM CSTEF1Union, AR0.2350$25,000
January 22:38 PM CSTEF1Garland, AR2.12002$5.0 million
January 23:11 PM CSTEF1Sabine Parish, LA5.270$15,000
January 23:43 PM CSTEF0Red River Parish, LA0.350$10,000
January 24:46 PM CSTEF2Jackson Parish, LA14.81,9283$850,000
January 25:32 PM CSTEF0Mayes, OK5.3700$50,000
January 25:52 PM CSTEF1McIntosh, OK8.6650$100,000
January 26:19 PM CSTEF2Union Parish, LA3.9900$250,000
January 26:23 PM CSTEF1Ottawa, OK0.6200$75,000
January 26:36 PM CSTEF1Morehouse Parish, LA1.475$10,000
January 26:40 PM CSTEF1Morehouse Parish, LA4.0200$100,000
January 26:54 PM CSTEF2Ashley, AR42.81,300$705,000
January 27:25 PM CSTUnratedSequoyah, OK2.5200
January 29:02 PM CSTEF0West Carroll Parish, LA to AR3.8250$120,000

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.