Tornadoes · United States · Alabama · 2003
F0 tornado, Millerville to Lineville, Alabama, May 7, 2003
From Millerville to Lineville, this F0 tornado ran 1.2 miles across Clay County on May 7, 2003, touching down at 3:41 PM CDT and reaching 70 yards wide. It killed nobody, and did $1,000 of property damage.
The rating scale
Tracks are drawn in the color of the rating. The Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.
F040 to 72 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
F173 to 112 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
F4207 to 260 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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.
The record
- Rating
- F0
- Date
- May 7, 2003
- Touchdown
- 3:41 PM CDT (20:41 UTC)
- Path length
- 1.2 miles (1.9 km)
- Path width
- 70 yards (64 m)
- Deaths
- 0
- Injuries
- 0
- Property damage
- $1,000
- County
- Clay County
- Touchdown point
- 33.250, -86.000
- Lift-off point
- 33.230, -86.000
- Record number
- 303
What the Weather Service recorded
A weak tornado touched down in the western part of Clay County in the Talladega National Forest. One house sustained minor damage to the siding and exterior trim and a number of trees were downed along the path. The path extended from the west side of CR 18 across an isolated area just north of Mcgehee Mountain to just east of Bolton Road.Beg: 33 13.977/86 00.964 End: 33 13.932/85 59.780
A small tornado touched down south-southeast of Ashland just west of SR 77 and the Wellborn Cabinet Plant. The weak tornado was observed by a number of people and did very little damage. Besides downing a few small trees, the tornado damaged a couple of light posts at the cabinet plant.Beg: 33 15.014/85 49.373 End: 33 15.206/85 48.301
A very weak tornado apparently touched down just north of the center of Lineville and moved east-northeast ending east of SR 9. Damage was very minor and included several broken trees and some minor roof damage.Beg: 33 18.877/85 45.308 End: 33 19.042/85 44.105
From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.
The warnings
49 minutes of warning. NWS BMX issued a tornado warning for this county at 19:52 UTC, 49 minutes before the tornado touched down, in force until 20:45 UTC.
| Issued (UTC) | Expired | Product | Office |
|---|---|---|---|
| 19:52 UTC | 20:45 UTC | Tornado Warning | BMX |
| 20:26 UTC | 00:30 UTC | Flash Flood Warning | BMX |
| 20:37 UTC | 21:45 UTC | Tornado Warning | BMX |
| 21:23 UTC | 22:15 UTC | Tornado Warning | BMX |
| 22:32 UTC | 23:15 UTC | Tornado Warning | BMX |
| 23:12 UTC | 00:00 UTC | Tornado Warning | BMX |
| 00:22 UTC | 04:15 UTC | Flash Flood Warning | BMX |
| 04:06 UTC | 08:00 UTC | Flash Flood Warning | BMX |
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 forecast that day
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 20:11 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 air that afternoon
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.
Birmingham, AL (KBMX), 12:00Z
8.7 hours before the tornado, 73 km from the path. May 7, 2003.
- Mixed-layer CAPE
- 1457 J/kg
- Mixed-layer CIN
- -13 J/kg
- Surface CAPE
- 1489 J/kg
- Mixed-layer LCL
- 538 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 6.5
- 0-3 km lapse rate
- 4.9 K/km
Birmingham, AL (KBMX), 00:00Z
3.3 hours after it, 73 km from the path. May 8, 2003.
- Mixed-layer CAPE
- 2242 J/kg
- Mixed-layer CIN
- -18 J/kg
- Surface CAPE
- 2071 J/kg
- Mixed-layer LCL
- 809 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 8.2
- 0-3 km lapse rate
- 5.5 K/km
The surface observations
Alexander City (ALX), 36 km from the path, in the two hours either side.
| Time (UTC) | Temp (°F) | Dew point (°F) | Wind | Gust (kt) | Pressure (mb) | Weather |
|---|---|---|---|---|---|---|
| 19:00 UTC | 80.6 | 71.6 | 190° 7 kt | 1016.3 | ||
| 19:20 UTC | 80.6 | 71.6 | 200° 10 kt | 15 | 1015.9 | |
| 19:40 UTC | 80.6 | 71.6 | 170° 5 kt | 1015.6 | ||
| 20:00 UTC | 80.6 | 71.6 | 170° 6 kt | 1015.2 | ||
| 20:20 UTC | 80.6 | 73.4 | 150° 3 kt | 1014.9 | ||
| 20:40 UTC | 80.6 | 71.6 | 190° 9 kt | 1013.5 | ||
| 21:00 UTC | 80.6 | 71.6 | 160° 7 kt | 1012.9 | ||
| 21:20 UTC | 80.6 | 71.6 | 180° 9 kt | 1012.9 | ||
| 21:40 UTC | 80.6 | 71.6 | 180° 9 kt | 1012.9 | ||
| 22:00 UTC | 80.6 | 71.6 | 190° 7 kt | 1013.2 | ||
| 22:20 UTC | 80.6 | 71.6 | 200° 6 kt | 1013.5 | ||
| 22:40 UTC | 78.8 | 71.6 | 180° 7 kt | 1012.9 |
From the Iowa Environmental Mesonet's archive of airport observations.
The radar
The Birmingham radar (KBMX), 72 km away, was scanning. The volume nearest the touchdown began at 20:42 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.
This ground now
The live radar over the trackEvery 2003 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are
The other tornadoes of May 7, 2003
28 more were confirmed in the United States that day.
| Date | Time | Rating | Where | Path (mi) | Width (yd) | Deaths | Injuries | Damage |
|---|---|---|---|---|---|---|---|---|
| May 7 | 2:03 AM CDT | F1 | Hot Spring, AR | 4.0 | 300 | |||
| May 7 | 2:10 AM CDT | F0 | Marion, TX to LA | 13.0 | 25 | |||
| May 7 | 5:16 AM CDT | F1 | Arkansas, AR | 2.9 | 350 | |||
| May 7 | 5:43 AM CDT | F1 | Lincoln Parish, LA | 5.3 | 100 | |||
| May 7 | 9:25 AM CDT | F2 | Chickasaw, MS | 27.5 | 440 | 6 | $3.0 million | |
| May 7 | 11:11 AM CDT | F1 | Lamar, AL | 0.5 | 25 | $10,000 | ||
| May 7 | 12:11 PM CDT | F1 | Walker, AL | 2.4 | 40 | $20,000 | ||
| May 7 | 2:10 PM CDT | F1 | St. Clair, AL | 4.5 | 50 | $90,000 | ||
| May 7 | 2:40 PM CDT | F1 | Talladega, AL | 4.6 | 50 | $10,000 | ||
| May 7 | 2:45 PM CDT | F1 | Shelby, AL | 1.3 | 50 | $170,000 | ||
| May 7 | 2:46 PM CDT | F1 | Dallas, AR | 27.2 | 150 | |||
| May 7 | 3:20 PM CDT | F0 | Scott, MS | 0.3 | 30 | $10,000 | ||
| May 7 | 3:21 PM CDT | F0 | St. Clair, AL | 0.2 | 25 | $10,000 | ||
| May 7 | 2:30 PM MDT | F0 | Adams, CO | 0.1 | 50 | |||
| May 7 | 3:45 PM CDT | F0 | Newton, MS | 0.5 | 30 | $30,000 | ||
| May 7 | 3:57 PM CDT | F0 | Clay, AL | 1.1 | 50 | $2,000 | ||
| May 7 | 4:08 PM CDT | F0 | Clay, AL | 1.2 | 20 | $3,000 | ||
| May 7 | 5:25 PM EDT | F1 | Fauquier, VA | 5.0 | 75 | $10,000 | ||
| May 7 | 4:40 PM CDT | F1 | Randolph, AL | 12.9 | 500 | $90,000 | ||
| May 7 | 6:15 PM EDT | F0 | Heard, GA | 0.1 | 50 | $80,000 | ||
| May 7 | 6:20 PM EDT | F0 | Heard, GA | 0.2 | 50 | $3,000 | ||
| May 7 | 5:31 PM CDT | F0 | Marengo, AL | 0.1 | 40 | $1,000 | ||
| May 7 | 6:32 PM EDT | F0 | Coweta, GA | 0.1 | 25 | $1,000 | ||
| May 7 | 7:23 PM EDT | F0 | Saint Mary's, MD | 0.5 | 75 | $30,000 | ||
| May 7 | 7:30 PM EDT | F0 | Saint Mary's, MD | 2.0 | 100 | $30,000 | ||
| May 7 | 7:50 PM CDT | F1 | Callahan, TX | 3.0 | 500 | |||
| May 7 | 8:00 PM CDT | F0 | Eastland, TX | 0.3 | 50 | |||
| May 7 | 10:18 PM CDT | F0 | Wilbarger, TX | 0.2 | 20 |
What this means
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.
Sources
NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.