EF2 tornado, Dixon to Sebree, Kentucky, October 18, 2007

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 mphthis tornado

   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

EF2

Date

October 18, 2007

Touchdown

7:09 PM CDT (00:09 UTC)

Lifted

7:25 PM CDT (00:25 UTC)

On the ground

16 minutes

Path length

10.2 miles (16.4 km)

Path width

300 yards (274 m)

Deaths

0

Injuries

5

Property damage

$2.5 million

County

Webster County

Touchdown point

37.530, -87.687

Lift-off point

37.590, -87.517

Record number

0710181809-01

The second and more significant severe weather outbreak of the day occurred as a cold front swept east across the Mississippi Valley. Scattered thunderstorms developed along and ahead of the front late in the afternoon. The storms organized into supercells and short lines during the evening. Over a dozen tornadoes occurred in western Kentucky.

Three residences were destroyed, and ten others were damaged. Four of the damaged residences were deemed uninhabitable. Six chicken houses were destroyed. A rehabilitation center for troubled young adults received about 2 million dollars in damage. Four persons were seriously injured, and a fifth person received minor injuries. One of the injuries occurred when the tornado picked up a vehicle and tossed it. The occupant of the vehicle was ejected. The other four injuries occurred at a modular home on Kentucky 494. The modular home was nearly obliterated, with debris blown across nearby fields. The home's steel frame was thrown about 300 feet. All four occupants were seriously injured, including broken vertebrae and a punctured lung. Numerous roads were blocked by downed trees. Peak winds were estimated at 135 mph. The average path width was 250 yards.

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

51 minutes of warning. NWS PAH issued a tornado warning for this county at 23:18 UTC, 51 minutes before the tornado touched down, in force until 00:15 UTC.

The county was under a tornado watch, issued at 18:36 UTC and running to 02:47 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, with a 0.15 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 20:21 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 Evansville,IN radar (KVWX), 79 km away, was scanning. The volume nearest the touchdown began at 00:09 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 KentuckyEvery tornado in Kentucky since 1950Warnings in force in Kentucky nowThe forecast where you are

44 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.