Tornadoes · United States · Texas · 2023

Unrated tornado, Goodnight, Texas, June 21, 2023

This Unrated tornado ran 0.9 miles across Armstrong County on June 21, 2023, touching down at 6:18 PM CDT 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
June 21, 2023
Touchdown
6:18 PM CDT (23:18 UTC)
Lifted
6:23 PM CDT (23:23 UTC)
On the ground
5 minutes
Path length
0.9 miles (1.4 km)
Path width
100 yards (91 m)
Deaths
0
Injuries
0
County
Armstrong County
Touchdown point
34.950, -101.380
Lift-off point
34.940, -101.370
Record number
2306211718-01

What the Weather Service recorded

Various discrete and scattered thunderstorms impacted portions the combined Oklahoma and Texas Panhandles each evening and overnight on the 21st through the 23rd. Several of these storms produced large hail over and inch in diameter with some as large as 2.75. Severe wind gusts were also hazard with a gust upwards of 66 mph measured by ground equipment. A supercell even dropped a tornado in Hemphill County.

This tornado was viewed by storm spotters and captured on video footage. However, it did not produce damage and was generally in an open field.

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 19:58 UTC and running to 03:00 UTC.

Issued (UTC)ExpiredProductOffice
19:58 UTC03:00 UTCTornado WatchAMA
22:23 UTC23:30 UTCSevere Thunderstorm WarningAMA
22:58 UTC00:00 UTCSevere Thunderstorm WarningAMA
23:12 UTC03:15 UTCFlood AdvisoryAMA
23:22 UTC00:00 UTCTornado WarningAMA
23:49 UTC00:45 UTCSevere Thunderstorm WarningAMA
23:58 UTC04:00 UTCFlood AdvisoryAMA
00:10 UTC03:15 UTCFlood AdvisoryAMA

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 Marginal Risk. The outlook in force was issued at 20:00 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.

Amarillo Airport, TX (KAMA), 12:00Z

11.3 hours before the tornado, 43 km from the path. June 21, 2023.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2023-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 524 joules per kilogram, CIN -339, lifted condensation level 2615 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, Amarillo Airport, TX at 12:00Z on 2023-06-21The 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 8 square meters per square second, 0 to 6 km bulk shear 16 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
524 J/kg
Mixed-layer CIN
-339 J/kg
Surface CAPE
340 J/kg
Mixed-layer LCL
2615 m above ground
0-6 km bulk shear
16 kt
0-1 km bulk shear
14 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

Amarillo Airport, TX (KAMA), 00:00Z

0.7 hours after it, 43 km from the path. June 22, 2023.

Skew-T log-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2023-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2522 joules per kilogram, CIN -38, lifted condensation level 1886 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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, Amarillo Airport, TX at 00:00Z on 2023-06-22The 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 121 square meters per square second, 0 to 6 km bulk shear 60 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
2522 J/kg
Mixed-layer CIN
-38 J/kg
Surface CAPE
4361 J/kg
Mixed-layer LCL
1886 m above ground
0-6 km bulk shear
60 kt
0-1 km bulk shear
20 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.2
Supercell composite
11.3
0-3 km lapse rate
8.7 K/km

Open this sounding in Storm Lab

The radar

The Amarillo radar (KAMA), 44 km away, was scanning. The volume nearest the touchdown began at 23:19 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
22:32 UTCHAIL 1.58 S PanhandleCarson, TXChaser report of Ping Pong Ball sized hail north of Conway, TX.
22:32 UTCHAIL 1.58 S PanhandleCarson, TXChaser report of Ping Pong Ball sized hail north of Conway, TX.
22:46 UTCHAIL 1.257 N ClaudeCarson, TXHalf dollar sized hail reported by trained spotter.
22:46 UTCHAIL 1.257 N ClaudeCarson, TXHalf dollar sized hail reported by trained spotter.
22:58 UTCHAIL 1.56 N GoodnightArmstrong, TXSporadic ping pong sized hail 3 mi N of report location about 8 minutes ago.
22:58 UTCHAIL 1.59 N GoodnightArmstrong, TXCorrects previous report: Sporadic ping pong sized hail 3 mi N of report location about 8 minutes ago.
22:58 UTCHAIL 1.59 N GoodnightArmstrong, TXCorrects previous report: Sporadic ping pong sized hail 3 mi N of report location about 8 minutes ago.
23:06 UTCHAIL 2.754 S ClaudeArmstrong, TXBaseball sized hail reported 4 miles south of Claude along Highway 207.
23:06 UTCHAIL 2.754 S ClaudeArmstrong, TXBaseball sized hail reported 4 miles south of Claude along Highway 207.
23:13 UTCHAIL 2ClaudeArmstrong, TX2 inch hail in Claude. Report received via social media.
23:13 UTCHAIL 2ClaudeArmstrong, TX2 inch hail in Claude. Report received via social media.

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 TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

The other tornadoes of June 21, 2023

44 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 211:33 PM MDTUnratedCheyenne, NE0.650
June 211:44 PM MDTUnratedLogan, CO0.525
June 213:05 PM MDTUnratedWashington, CO0.725
June 213:35 PM MDTUnratedLogan, CO1.425
June 214:10 PM MDTUnratedWashington, CO0.325
June 214:18 PM MDTUnratedWashington, CO0.525
June 214:25 PM MDTUnratedWashington, CO0.750
June 214:28 PM MDTEF2Washington, CO1.9400$15,000
June 214:28 PM MDTUnratedWashington, CO0.250
June 214:29 PM MDTUnratedWashington, CO0.225
June 214:31 PM MDTUnratedWashington, CO1.650
June 214:36 PM MDTUnratedWashington, CO0.650
June 214:37 PM MDTUnratedWashington, CO1.0200
June 214:39 PM MDTUnratedWashington, CO0.525
June 214:40 PM MDTUnratedWashington, CO0.625
June 214:42 PM MDTUnratedWashington, CO0.325
June 214:43 PM MDTUnratedWashington, CO0.325
June 214:43 PM MDTEF1Washington, CO0.9200
June 214:45 PM MDTUnratedWashington, CO0.825
June 214:45 PM MDTUnratedWashington, CO0.450
June 214:46 PM MDTUnratedWashington, CO0.925
June 214:47 PM MDTUnratedWashington, CO0.450
June 214:48 PM MDTUnratedWashington, CO0.5100
June 214:49 PM MDTUnratedWashington, CO0.625
June 214:50 PM MDTUnratedWashington, CO0.825
June 214:51 PM MDTUnratedWashington, CO1.325
June 214:52 PM MDTUnratedWashington, CO1.9200
June 214:53 PM MDTUnratedWashington, CO0.625
June 214:57 PM MDTUnratedWashington, CO4.350
June 215:15 PM MDTUnratedWashington, CO0.850
June 215:20 PM MDTEF2Washington, CO4.5400
June 215:30 PM MDTEF1Washington, CO0.114
June 215:39 PM MDTUnratedWashington, CO3.725
June 216:14 PM MDTUnratedWashington, CO0.850
June 216:16 PM MDTEF2Washington, CO4.9800
June 216:35 PM MDTUnratedWashington, CO0.550
June 216:45 PM MDTUnratedWashington, CO1.025
June 217:50 PM CDTUnratedMotley, TX0.230
June 217:51 PM CDTEF3Matador tornado, TX9.1600415
June 217:19 PM MDTEF0Perkins, SD1.850
June 218:36 PM CDTUnratedDickens, TX0.130
June 218:37 PM CDTUnratedMotley, TX2.8100
June 217:44 PM MDTUnratedGoshen, WY1.050
June 219:18 PM CDTUnratedDickens, TX0.350

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.