Tornadoes · United States · Oklahoma · 2022

EF0 tornado, Loyal, Oklahoma, May 2, 2022

This EF0 tornado ran 0.9 miles across Kingfisher County on May 2, 2022, touching down at 4:22 PM CDT and reaching 80 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 mphthis tornado

    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. 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.

The record

Rating
EF0
Date
May 2, 2022
Touchdown
4:22 PM CDT (21:22 UTC)
Lifted
4:26 PM CDT (21:26 UTC)
On the ground
4 minutes
Path length
0.9 miles (1.4 km)
Path width
80 yards (73 m)
Deaths
0
Injuries
0
County
Kingfisher County
Touchdown point
35.964, -98.151
Lift-off point
35.977, -98.148
Record number
2205021522-01

What the Weather Service recorded

A dryline was the main focus for storm development during the afternoon of the 2nd as a compact upper wave crossed the area. Numerous storms led to reports of hail, high winds, and a few tornadoes through the afternoon and evening.

A brief tornado was observed about 2.5 miles west of Loyal by an off-duty NWS meteorologist and storm chasers. This tornado moved over farmland.

A second tornado was observed west of Loyal. Again, this tornado affected farmland.

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

The warnings

7 minutes of warning. NWS OUN issued a tornado warning for this county at 21:15 UTC, 7 minutes before the tornado touched down, in force until 22:00 UTC.

The county was under a tornado watch, issued at 19:03 UTC and running to 00:26 UTC.

Issued (UTC)ExpiredProductOffice
19:03 UTC00:26 UTCTornado WatchOUN
20:44 UTC21:30 UTCSevere Thunderstorm WarningOUN
20:53 UTC21:04 UTCTornado WarningOUN
21:03 UTC21:45 UTCSevere Thunderstorm WarningOUN
21:15 UTC22:00 UTCTornado WarningOUN
21:36 UTC22:15 UTCSevere Thunderstorm WarningOUN
21:41 UTC22:15 UTCSevere Thunderstorm WarningOUN
22:16 UTC23:00 UTCSevere Thunderstorm WarningOUN
22:32 UTC01:30 UTCFlash Flood WarningOUN
22:43 UTC03:45 UTCFlood AdvisoryOUN

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 Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 19:20 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

9.4 hours before the tornado, 108 km from the path. May 2, 2022.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2022-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 7 joules per kilogram, CIN -347, lifted condensation level 823 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 2022-05-02The 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 226 square meters per square second, 0 to 6 km bulk shear 32 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
7 J/kg
Mixed-layer CIN
-347 J/kg
Surface CAPE
21 J/kg
Mixed-layer LCL
823 m above ground
0-6 km bulk shear
32 kt
0-1 km bulk shear
29 kt
0-1 km storm-relative helicity
226 m²/s²
0-3 km storm-relative helicity
410 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2
0-3 km lapse rate
4.2 K/km

Open this sounding in Storm Lab

Norman, OK (KOUN), 00:00Z

2.6 hours after it, 108 km from the path. May 3, 2022.

Skew-T log-pSkew-T log-p diagram, Norman, OK 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 4251 joules per kilogram, CIN -13, lifted condensation level 1061 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 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 313 square meters per square second, 0 to 6 km bulk shear 54 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
4251 J/kg
Mixed-layer CIN
-13 J/kg
Surface CAPE
4889 J/kg
Mixed-layer LCL
1061 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
37 kt
0-1 km storm-relative helicity
313 m²/s²
0-3 km storm-relative helicity
365 m²/s²
Significant tornado parameter
9.0
Supercell composite
40.2
0-3 km lapse rate
6.5 K/km

Open this sounding in Storm Lab

The surface observations

Watonga (JWG), 27 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
19:35 UTC78.866.6180° 16 kt251004.7
19:55 UTC80.467.5170° 17 kt241004.4
20:15 UTC81.767.6150° 19 kt241003
20:35 UTC7867.3140° 17 kt261002VCTSRA
20:55 UTC73.268.710° 7 kt181002-TSRA
21:15 UTC7768.7170° 22 kt30999.3TS
21:35 UTC7767.8240° 27 kt341000.7-VCTSRA
21:55 UTC85.555.6280° 18 kt1000.7TS
22:15 UTC86.547300° 15 kt271001.4VCTS
22:35 UTC85.646.6310° 29 kt351002
22:55 UTC8349.8320° 22 kt341002.7
23:15 UTC80.848.6310° 25 kt341003.4VCTS

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

The radar

The Vance AFB radar (KVNX), 86 km away, was scanning. The volume nearest the touchdown began at 21:24 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
20:43 UTCHAIL 12 E WatongaBlaine, OK
21:25 UTCHAIL 2OkeeneBlaine, OK
21:35 UTCHAIL 1.753 N DoverKingfisher, OK
21:40 UTCHAIL 2.755 Nw DoverKingfisher, OK
21:42 UTCTSTM WND GST 63Vance Air Force BaseGarfield, OK
22:17 UTCTSTM WND GST 652 S DoverKingfisher, OK65 MPH PERHAPS HIGHER.
22:30 UTCHEAVY RAIN 2KingfisherKingfisher, OKREPORTS OF FLOODING IN AND AROUND KINGFISHER.

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

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 24:36 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
May 29:03 PM CDTUnratedCherokee, OK0.175

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.