Tornadoes · United States · Alabama · 2000

F1 tornado, Dixons Mills, Alabama, January 9, 2000

This F1 tornado ran 6.5 miles across Marengo County on January 9, 2000, touching down at 11:05 PM CST and reaching 300 yards wide. It killed nobody, and did $500,000 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 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. F173 to 112 mphthis tornado

    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
F1
Date
January 9, 2000
Touchdown
11:05 PM CST (05:05 UTC)
Path length
6.5 miles (10.5 km)
Path width
300 yards (274 m)
Deaths
0
Injuries
0
Property damage
$500,000
County
Marengo County
Touchdown point
32.050, -87.780
Lift-off point
32.050, -87.700
Record number
3

What the Weather Service recorded

A tornado was reported first touching down just inside the Marengo County line about 3 miles south of Dixons Mills. The storm then crossed U. S. Highway 43 about 2.5 miles south of Dixons Mills . Storm track was northeast...crossing County Road 37 and then across State Highway 10 just west of County Road 55. The storm then moved across County Roads 55 and 45. Almost all the damage along this track was to trees. The tornado appeared to be near tree top level along this path.The storm then moved across County Road 56 near Surginer just to the east of County Road 45. This is where most of the structural damage occurred. Two mobile homes were demolished. One home sustained major roof damage, while two others suffered roof and structural damage along County Road 56. Damage was also done to barns and outbuildings here. The tornado lifted back into the cloud just north of County Road 56. No injuries were reported.

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
19:07 UTC19:45 UTCSevere Thunderstorm WarningMOB
03:15 UTC04:30 UTCSevere Thunderstorm WarningMOB
05:01 UTC06:00 UTCSevere Thunderstorm WarningMOB

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 Moderate Risk. The outlook in force was issued at 01:06 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), 00:00Z

5.1 hours before the tornado, 155 km from the path. January 10, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2000-01-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 395 joules per kilogram, CIN -21, lifted condensation level 700 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 2000-01-10The 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 127 square meters per square second, 0 to 6 km bulk shear 55 knots.1939587897117136Sfc1 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
395 J/kg
Mixed-layer CIN
-21 J/kg
Surface CAPE
71 J/kg
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
55 kt
0-1 km bulk shear
33 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0
0-3 km lapse rate
5.4 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 12:00Z

6.9 hours after it, 155 km from the path. January 10, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2000-01-10Temperature 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 -86856, lifted condensation level 1355 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 2000-01-10The 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 -331 square meters per square second, 0 to 6 km bulk shear 96 knots.1939587897117136Sfc1 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
-86856 J/kg
Surface CAPE
157 J/kg
Mixed-layer LCL
1355 m above ground
0-6 km bulk shear
96 kt
0-1 km bulk shear
35 kt
0-1 km storm-relative helicity
-331 m²/s²
0-3 km storm-relative helicity
-286 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1
0-3 km lapse rate
5.4 K/km

Open this sounding in Storm Lab

This ground now

The live radar over the trackEvery 2000 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of January 9, 2000

2 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
January 93:56 PM CSTF0Montgomery, AL0.1201$20,000
January 94:22 PM CSTF0Bullock, AL1.030

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.