EF0 tornado, Oak Grove, Mississippi, March 3, 2008

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

March 3, 2008

Touchdown

10:49 PM CST (04:49 UTC)

Lifted

10:50 PM CST (04:50 UTC)

On the ground

1 minutes

Path length

1.3 miles (2.1 km)

Path width

30 yards (27 m)

Deaths

0

Injuries

0

Property damage

$55,000

County

Kemper County

Touchdown point

32.650, -88.570

Lift-off point

32.666, -88.558

Record number

0803032249-01

A strong upper level system and evolving surface low moved across the region late on March 3rd. These features combined to bring a potent weather system to the area and a healthy round of severe thunderstorms from late afternoon through around midnight. It was a line of thunderstorms which brought most of the severe weather, but a few supercells did occur just ahead of the line. Ten tornadoes occurred, two of which were strong (EF-2), along with a good deal of wind damage as the line pushed east across Mississippi.

This tornado touched down briefly about 6 miles west southwest of Porterville. Several trees were snapped and uprooted, a shed was destroyed and a wooden fence was knocked down. Minor damage also occurred to a church steeple. Maximum winds were around 85 mph.

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

22 minutes of warning. NWS JAN issued a tornado warning for this county at 04:27 UTC, 22 minutes before the tornado touched down, in force until 05:15 UTC.

The county was under a tornado watch, issued at 20:26 UTC and running to 06:55 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 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 01:01 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.

Meridian Nas/Mccain (NMM), 12 km from the path, in the two hours either side.

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

The Columbus AFB radar (KGWX), 139 km away, was scanning. The volume nearest the touchdown began at 04:48 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 2008 tornado in MississippiEvery tornado in Mississippi since 1950Warnings in force in Mississippi nowThe forecast where you are

14 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.