Tornadoes · United States · Alabama · 2000

F1 tornado, Snowdoun to Pike Road, Alabama, March 19, 2000

From Snowdoun to Pike Road, this F1 tornado ran 3.3 miles across Montgomery County on March 19, 2000, touching down at 5:25 PM CST and reaching 60 yards wide. It killed nobody, and did $20,000 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
March 19, 2000
Touchdown
5:25 PM CST (23:25 UTC)
Path length
3.3 miles (5.3 km)
Path width
60 yards (55 m)
Deaths
0
Injuries
0
Property damage
$20,000
County
Montgomery County
Touchdown point
32.230, -86.230
Lift-off point
32.220, -86.180
Record number
77

What the Weather Service recorded

A small tornado touched down west of CR 39 near the end of Horse Farm Road and traveled nearly due east. A number of trees were downed and several structures sustained minor roof damage. The tornado crossed CR 39 and moved along a residential road with trees and limbs downed. One house in an area of well built, larger homes lost a portion of the southeast corner of the roof. Beginning: 32 14.093/86 13.529 End: 32 14.152/86 10.144

What was believed to be a small tornado touched down briefly on the south side of CR 40 mostly in open field area. One mobile home was damaged seriously with some of the insulation from the home blown upward into trees surrounding the home. Little other damage occurred. Beginning: 32 16.445/86 07.848 End: 32 16.589/86 07.432

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
22:54 UTC23:45 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 Slight Risk. The outlook in force was issued at 19:46 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

11.4 hours before the tornado, 119 km from the path. March 19, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2000-03-19Temperature 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 0, lifted condensation level 504 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 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 2000-03-19The 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 562 square meters per square second, 0 to 6 km bulk shear 41 knots.19395878Sfc1 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
0 J/kg
Surface CAPE
4 J/kg
Mixed-layer LCL
504 m above ground
0-6 km bulk shear
41 kt
0-1 km bulk shear
52 kt
0-1 km storm-relative helicity
562 m²/s²
0-3 km storm-relative helicity
746 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4
0-3 km lapse rate
3.4 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 00:00Z

0.6 hours after it, 119 km from the path. March 20, 2000.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2000-03-20Temperature 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 -46838, lifted condensation level 860 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 00:00Z on 2000-03-20The 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 -180 square meters per square second, 0 to 6 km bulk shear 64 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
0 J/kg
Mixed-layer CIN
-46838 J/kg
Surface CAPE
6 J/kg
Mixed-layer LCL
860 m above ground
0-6 km bulk shear
64 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
-180 m²/s²
0-3 km storm-relative helicity
-102 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

The surface observations

Montgomery/Dannelly (MGM), 20 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:53 UTC6559140° 17 kt271006.4
22:32 UTC62.660.8150° 19 kt261006.4RA BR
22:39 UTC62.660.8140° 19 kt261005.8RA BR
22:46 UTC62.660.8170° 11 kt261006.4-RA BR
22:53 UTC5956290° 19 kt271008.8RA BR
23:01 UTC55.455.4350° 9 kt1008.5+TSRA BR
23:05 UTC55.453.6310° 11 kt191009.1+TSRA BR
23:09 UTC55.453.6320° 8 kt191008.8+TSRA BR
23:12 UTC55.453.6320° 9 kt191008.5+TSRA BR
23:16 UTC55.453.6320° 7 kt1008.1+TSRA BR
23:24 UTC55.453.6300° 7 kt1009.1TSRA BR
23:26 UTC55.453.6300° 6 kt1009.1TSRA BR
23:35 UTC57.253.6250° 3 kt1009.8TSRA BR
23:42 UTC55.455.4280° 4 kt1009.5+TSRA BR
23:46 UTC55.455.4290° 4 kt1009.1+RA BR
23:53 UTC5655330° 4 kt1009.1RA BR
00:27 UTC55.455.4140° 3 kt1009.1-RA
00:53 UTC56550° 0 kt1008.8-RA

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

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 March 19, 2000

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
March 195:38 PM CSTF0Montgomery, AL0.420$30,000

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.