EF0 tornado, Guymon, Oklahoma, May 31, 2007

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.

Rating

EF0

Date

May 31, 2007

Touchdown

8:24 PM CDT (01:24 UTC)

Lifted

8:25 PM CDT (01:25 UTC)

On the ground

1 minutes

Path length

0.1 miles (0.2 km)

Path width

75 yards (69 m)

Deaths

0

Injuries

0

County

Texas County

Touchdown point

36.708, -101.563

Lift-off point

36.708, -101.563

Record number

0705311924-01

Severe thunderstorms across the western and central Oklahoma Panhandle produced large hail...damaging winds...and tornadoes during the evening hours. No injuries were reported.

The tornado developed over open country about thirteen miles northwest of Guymon at 1858 CST and tracked northeastward before dissipating about thirteen and a half miles northwest of Guymon at 1900 CST. The tornado remained over open country and the path length and path width were estimated. No damage or injuries were reported.

This tornado formed over open country at 1906 CST about eleven miles west southwest of Hough Oklahoma near Muncy and tracked eastward along East West County Road 13 before dissipating at 1917 CST roughly seven miles southwest of Hough...or just east of where East West County Road 13 ends and between North South County Roads 73 and 75. The tornado damaged a grain elevator and also two irrigation pivots...however no injuries were reported.

This tornado developed and remained over open country at 1924 CST about five miles west northwest of Guymon Oklahoma or near Unity. The tornado was on the ground for about one minute before dissipating at 1925 CST. The tornado path length and path width were estimated and no damage or injuries were reported.

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

26 minutes of warning. NWS AMA issued a tornado warning for this county at 00:58 UTC, 26 minutes before the tornado touched down, in force until 01:30 UTC.

The county was under a tornado watch, issued at 20:29 UTC and running to 02:36 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 01:09 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.

The Amarillo radar (KAMA), 164 km away, was scanning. The volume nearest the touchdown began at 01:21 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 2007 tornado in OklahomaEvery tornado in Oklahoma since 1950Warnings in force in Oklahoma nowThe forecast where you are

10 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.