EF0 tornado, Orienta, Oklahoma, June 13, 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

June 13, 2007

Touchdown

6:34 PM CDT (23:34 UTC)

Lifted

6:36 PM CDT (23:36 UTC)

On the ground

2 minutes

Path length

0.2 miles (0.3 km)

Path width

75 yards (69 m)

Deaths

0

Injuries

0

County

Major County

Touchdown point

36.350, -98.570

Lift-off point

36.350, -98.570

Record number

0706131734-01

The very wet pattern continued over Oklahoma on the 13th. An outflow boundary was situated northwest to southeast over parts of northern and central Oklahoma. Other outflow boundaries were scattered over the western half of the state as well. A very slow moving upper level storm system drifted toward western Oklahoma. This helped thunderstorms develop over much of western Oklahoma. The thunderstorms produced very large hail, strong winds, and tornadoes over parts of the area. Also, due to the slow movement of the thunderstorms, flash flooding continued to be a concern with several roads washed out. The event lasted well into the evening before finally ending during the early morning hours. Monetary damages were estimated.

A tornado developed south of US-412 and just east of the Glass Mountains. The tornado was observed by numerous spotters and was covered live by television news helicopters from Oklahoma City. The tornado moved very little and no known damage was occurred.|

A second tornado developed soon after the dissipation of the first tornado. This tornado also formed just east of the Glass Mountains and south of US Highway 412. This tornado was also observed by numerous spotters and covered live by television news helicopters which showed a well-developed tornado visually. This tornado moved little during its two minute lifespan, and produced no known damage. |

A third tornado was shown in the live coverage from television helicopters just east of the Glass Mountains. Again, this tornado also moved little and no damage was reported.

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

1 minute of warning. NWS OUN issued a tornado warning for this county at 23:33 UTC, 1 minute before the tornado touched down, in force until 00:00 UTC.

The county was under a severe thunderstorm watch, issued at 18:54 UTC and running to 02:46 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 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 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 Vance AFB radar (KVNX), 59 km away, was scanning. The volume nearest the touchdown began at 23:34 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

5 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.