EF1 tornado, Ashburn, Georgia, December 15, 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 mphthis tornado

   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

EF1

Date

December 15, 2007

Touchdown

9:20 PM EST (02:20 UTC)

Lifted

9:22 PM EST (02:22 UTC)

On the ground

2 minutes

Path length

3.5 miles (5.6 km)

Path width

125 yards (114 m)

Deaths

1

Injuries

0

Property damage

$1.3 million

County

Turner County

Touchdown point

31.690, -83.682

Lift-off point

31.726, -83.640

Record number

0712152020-01

An warm and unstable air mass collided along a strong cold front to produce reports of damaging thunderstorm winds and a pair of tornadoes across portions of southwest Georgia. Unfortunately, a fatality occurred when one of the tornadoes tossed a semi into an enbankment off Interstate 75 just northeast of Ashburn.

A tornado touched down just southwest of Ashburn and tracked northeast through the city. Numerous trees were toppled, with several on top of houses and vehicles. Four mobile homes were destroyed and 39 frame homes were damaged. The tornado's winds twisted steel beams and tore the roofs off of two peanut warehouses. Numerous businesses were damaged. The tornado snapped the tops of pine trees just northeast of Ashburn. A semi traveling north on Interstate 75 near mile marker 83 was blown into an embankment. The driver was killed on impact.

The deaths

1 direct deaths are recorded for this tornado, each with what Storm Data knows of it.

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

14 minutes of warning. NWS TAE issued a tornado warning for this county at 02:06 UTC, 14 minutes before the tornado touched down, in force until 02:29 UTC.

The county was under a tornado watch, issued at 21:47 UTC and running to 02:48 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 01:00 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.

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 GeorgiaEvery tornado in Georgia since 1950Warnings in force in Georgia nowThe forecast where you are

6 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.