F0 tornado, Olney to Graham, Texas, April 30, 2000

1. F040 to 72 mphthis tornado

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. F173 to 112 mph

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. F2113 to 157 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. F3158 to 206 mph

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. F4207 to 260 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. F5261 to 318 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

F0

Date

April 30, 2000

Touchdown

5:40 PM CDT (22:40 UTC)

Path length

0.2 miles (0.3 km)

Path width

20 yards (18 m)

Deaths

0

Injuries

0

County

Young County

Touchdown point

33.370, -98.770

Lift-off point

33.370, -98.770

Record number

762

April 30, 2000 - Event NarrativeA big day for severe weather across northwest portions of the area. Several outflow boundaries, a dryline, and moist unstable air all helped contribute to thunderstorm development. There were several rounds of thunderstorms, the first wave was in the early morning hours, from about 3 am to 5 am. This activity developed in Young and Palo Pinto counties and moved eastward to affect Parker, Jack, Wise and Tarrant counties. Another event developed in the early evening, generally north and west of a Dallas, Glen Rose, Eastland line. Most of the activity was centered on Young, Jack, and Stephens county. A large tornado occurred near Olney (Young County) during this event. A continuation of aa tornado that began in Throckmorton county.

A brief tornado touched down on the west side of Olney. No damage or injuries were reported.

A brief touchdown was reported by an off duty National Weather Service meteorologist.

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

24 minutes of warning. NWS FWD issued a tornado warning for this county at 22:16 UTC, 24 minutes before the tornado touched down, in force until 23:00 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 Moderate Risk. The outlook in force was issued at 19:19 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.

Wichita Falls/Shep (SPS), 72 km from the path, in the two hours either side.

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

The live radar over the trackEvery 2000 tornado in TexasEvery tornado in Texas since 1950Warnings in force in Texas nowThe forecast where you are

13 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.