Tornadoes · United States · Alabama · 2000

F2 tornado, Ashville, Alabama, December 16, 2000

This F2 tornado ran 8.5 miles across St. Clair County on December 16, 2000, touching down at 2:20 PM CST and reaching 200 yards wide. It killed nobody and injured 2, and did $170,000 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 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. F2113 to 157 mphthis tornado

    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
F2
Date
December 16, 2000
Touchdown
2:20 PM CST (20:20 UTC)
Path length
8.5 miles (13.7 km)
Path width
200 yards (183 m)
Deaths
0
Injuries
2
Property damage
$170,000
County
St. Clair County
Touchdown point
33.780, -86.320
Lift-off point
33.830, -86.200
Record number
601

What the Weather Service recorded

In St. Clair County, an F2 tornado track extended from near Cool Springs to south of Ashville to near Gum Springs Church. The total track was 8.5 miles long and about 200 yards wide at its widest point. The tornado began at 220 PM on County Road 31, just west of Cool Springs. The tornado lifted around 231 PM about 3 miles east of Ashville. Four houses sustained significant damage and two mobile homes were annihilated. A baseball park was damaged at the Ashville High School. Two injuries occurred near the beginning of the tornado track near Cool Springs. Beginning: 33 47.292/86 19.737 Ending: 33 50.819/86 12.055

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

The warnings

23 minutes of warning. NWS BMX issued a tornado warning for this county at 19:57 UTC, 23 minutes before the tornado touched down, in force until 20:45 UTC.

Issued (UTC)ExpiredProductOffice
19:57 UTC20:45 UTCTornado WarningBMX
22:23 UTC23:00 UTCSevere Thunderstorm WarningBMX
23:38 UTC00:15 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 forecast that day

The Storm Prediction Center had this point in a Moderate Risk. The outlook in force was issued at 20:14 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

8.3 hours before the tornado, 85 km from the path. December 16, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2000-12-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 48 joules per kilogram, CIN -269, lifted condensation level 466 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 12:00Z on 2000-12-16The 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 531 square meters per square second, 0 to 6 km bulk shear 68 knots.1939587897Sfc1 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
48 J/kg
Mixed-layer CIN
-269 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
68 kt
0-1 km bulk shear
49 kt
0-1 km storm-relative helicity
531 m²/s²
0-3 km storm-relative helicity
563 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 00:00Z

3.7 hours after it, 85 km from the path. December 17, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2000-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 651 joules per kilogram, CIN -23, lifted condensation level 698 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2000-12-17The 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 303 square meters per square second, 0 to 6 km bulk shear 99 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
651 J/kg
Mixed-layer CIN
-23 J/kg
Surface CAPE
593 J/kg
Mixed-layer LCL
698 m above ground
0-6 km bulk shear
99 kt
0-1 km bulk shear
50 kt
0-1 km storm-relative helicity
303 m²/s²
0-3 km storm-relative helicity
332 m²/s²
Significant tornado parameter
1.3
Supercell composite
4.8
0-3 km lapse rate
5.7 K/km

Open this sounding in Storm Lab

The radar

The Birmingham radar (KBMX), 85 km away, was scanning. The volume nearest the touchdown began at 20:19 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 2000 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of December 16, 2000

23 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
December 1610:34 AM CSTF2Geneva, AL4.510019$2.5 million
December 1611:00 AM CSTF2Dale, AL29.0170$5.0 million
December 1611:30 AM CSTF2Lauderdale, MS12.044017$2.1 million
December 1612:25 PM CSTF1Lawrence, AL5.130$100,000
December 1612:38 PM CSTF2Limestone, AL4.860$150,000
December 1612:54 PM CSTF4Tuscaloosa tornado, AL18.075011144$13 million
December 1612:55 PM CSTF0Walton, FL0.250$3,000
December 161:08 PM CSTF1Lincoln, TN1.550$50,000
December 161:24 PM CSTF2Holmes, FL3.0100$750,000
December 161:29 PM CSTF0Perry, AL0.730$4,000
December 161:50 PM CSTF1Jackson, FL5.070$300,000
December 162:46 PM CSTF3Etowah, AL12.850014$10 million
December 163:17 PM CSTF0Calhoun, AL0.320
December 164:50 PM ESTF2Dougherty, GA6.070$750,000
December 164:55 PM CSTF0Autauga, AL0.220
December 165:46 PM CSTF0Macon, AL0.750$10,000
December 166:19 PM CSTF0Randolph, AL1.040$10,000
December 169:30 PM ESTF2Sumter, GA10.0100$310,000
December 1610:10 PM ESTF0Abbeville, SC0.10
December 1612:00 AM ESTF0Cumberland, NC0.120
December 1612:10 AM ESTF0Harnett, NC0.120
December 1612:10 AM ESTF2Richmond, GA2.0608
December 1612:15 AM ESTF0Harnett, NC0.120

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.