Tornadoes · United States · Alabama · 2005

F0 tornado, Greensboro, Alabama, January 7, 2005

This F0 tornado ran 0.8 miles across Hale County on January 7, 2005, touching down at 11:12 PM CST and reaching 75 yards wide. It killed nobody, and did $30,000 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.

  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.

The record

Rating
F0
Date
January 7, 2005
Touchdown
11:12 PM CST (05:12 UTC)
Path length
0.8 miles (1.3 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
Property damage
$30,000
County
Hale County
Touchdown point
32.670, -87.630
Lift-off point
32.670, -87.620
Record number
6

What the Weather Service recorded

The first tornado of 2005 occurred in Hale County. The weak tornado touched down approximately 3 miles southwest of Greensboro near State Highway 69. Several out-buildings were destroyed near the Thigpen residence on Highway 69 south. One house had significant roof damage and one vehicle sustained body and window damage. One tractor had the enclosed top ripped off. At least 50 trees were snapped off or blown over along the short path. The brief tornado touched down at 1112 pm and lifted at 1114 pm CST. The tornado was rated an F0. The tornado damage path was approximately 3/4 of a mile long and 75 yards wide at its widest point. Begin: 32 40.200/87 38.428 End: 32 40.452/87 37.55

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
05:05 UTC05:30 UTCSevere Thunderstorm WarningBMX

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 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), 00:00Z

5.2 hours before the tornado, 97 km from the path. January 8, 2005.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2005-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 45 joules per kilogram, CIN -57, lifted condensation level 588 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Birmingham, AL at 00:00Z on 2005-01-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 323 square meters per square second, 0 to 6 km bulk shear 44 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
45 J/kg
Mixed-layer CIN
-57 J/kg
Surface CAPE
16 J/kg
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
44 kt
0-1 km bulk shear
35 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
358 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.9 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 12:00Z

6.8 hours after it, 97 km from the path. January 8, 2005.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2005-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 0 joules per kilogram, CIN -75081, lifted condensation level 515 meters above ground. Wind barbs in knots down the right edge.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Birmingham, AL at 12:00Z on 2005-01-08The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 86 square meters per square second, 0 to 6 km bulk shear 45 knots.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
-75081 J/kg
Surface CAPE
1 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
15 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.5 K/km

Open this sounding in Storm Lab

The surface observations

Tuscaloosa Municipal (TCL), 60 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
03:44 UTC66.264.4170° 14 kt191017.3VCTS -RA BR
03:53 UTC6765160° 15 kt231016.6VCTS -RA BR
04:22 UTC66.264.4170° 16 kt211017.3+TSRA BR
04:28 UTC66.264.4200° 21 kt291017.6+TSRA BR
04:34 UTC66.264.4220° 15 kt291017.9+TSRA BR
04:41 UTC66.264.4230° 11 kt261017.9VCTS -RA BR
04:53 UTC6764220° 9 kt1017.9-RA
05:53 UTC6664200° 8 kt1017.9
06:33 UTC64.464.4260° 5 kt1018.3
06:53 UTC6664230° 5 kt1018.3

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

The radar

The Birmingham radar (KBMX), 97 km away, was scanning. The volume nearest the touchdown began at 05:13 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 2005 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of January 7, 2005

5 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
January 75:17 PM CSTF1Hinds, MS0.6100$50,000
January 76:55 PM CSTF1Lincoln, MS2.0200$60,000
January 78:10 PM CSTF0Walthall, MS0.220$4,000
January 79:35 PM CSTF2Lamar, MS3.0300$200,000
January 79:53 PM CSTF1Forrest, MS2.0100$120,000

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.