Tornadoes · United States · Alabama · 2004

F0 tornado, Hueytown to Bluff Park, Alabama, May 31, 2004

From Hueytown to Bluff Park, this F0 tornado ran 1.7 miles across Jefferson County on May 31, 2004, touching down at 4:22 AM CDT and reaching 150 yards wide. It killed nobody, and did $250,000 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
May 31, 2004
Touchdown
4:22 AM CDT (09:22 UTC)
Path length
1.7 miles (2.7 km)
Path width
150 yards (137 m)
Deaths
0
Injuries
0
Property damage
$250,000
County
Jefferson County
Touchdown point
33.430, -86.980
Lift-off point
33.430, -86.950
Record number
170

What the Weather Service recorded

An F0 tornado touched down just east of Virginia Drive and traveled east southeast across the southern part of Hueytown. The tornado crossed Hueytown Road and ended just west of Brookline Drive. At least 20 homes were damaged by falling trees and 6 homes suffered major damage. The tornado path was 1.7 miles long and 150 yards wide at its widest point. Thousands of electric customers were left without power for several hours after the storm.Begin: 33 26 35/87 00 35 End: 33 25 72/86 58 75

An F0 tornado began near the crest of Shades Mountain in Bluff Park. This tornado traveled east southeast, moving through Bluff Park and Hoover, and ended near Rocky Ridge Road just east of Interstate 65. At least 73 homes were damaged, mainly by fallen trees. At least 5 homes suffered major damage. Several automobiles were damaged or destroyed by fallen trees. Several businesses along US 31 and on Lorna Road sustained varying degrees of roof damage. Numerous trees were knocked down, snapped off, or uprooted along the path. The tornado path was 4.24 miles long and 150 yards wide at its widest point. Begin: 33 24 80/86 51 28 End: 33 24 04/86 46 61

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
09:03 UTC10:00 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 General Thunderstorms Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 05:47 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

9.4 hours before the tornado, 33 km from the path. May 31, 2004.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2004-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1655 joules per kilogram, CIN -11, lifted condensation level 1411 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 2004-05-31The 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 36 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
1655 J/kg
Mixed-layer CIN
-11 J/kg
Surface CAPE
2668 J/kg
Mixed-layer LCL
1411 m above ground
0-6 km bulk shear
36 kt
0-1 km bulk shear
23 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.7
Supercell composite
9.3
0-3 km lapse rate
6.9 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 12:00Z

2.6 hours after it, 33 km from the path. May 31, 2004.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2004-05-31Temperature 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 -83096, lifted condensation level 842 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 2004-05-31The 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 -269 square meters per square second, 0 to 6 km bulk shear 53 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
-83096 J/kg
Surface CAPE
1 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
53 kt
0-1 km bulk shear
42 kt
0-1 km storm-relative helicity
-269 m²/s²
0-3 km storm-relative helicity
-182 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

The radar

The Birmingham radar (KBMX), 34 km away, was scanning. The volume nearest the touchdown began at 09:22 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 2004 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of May 31, 2004

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 312:00 AM EDTF0Owsley, KY0.1366
May 312:00 AM EDTF0Jackson, KY0.125
May 312:04 AM EDTF0Breathitt, KY0.125
May 312:05 AM EDTF1Knox, KY0.163$50,000
May 312:15 AM EDTF1Knox, KY0.263$30,000
May 311:17 AM CDTF1Moore, TN6.0150$10,000
May 311:19 AM CDTF1Bedford, TN0.8150$20,000
May 313:30 AM EDTF1Bradley, TN7.560$80,000
May 314:29 AM CDTF0Jefferson, AL4.2150$500,000
May 312:20 PM CDTF0Geneva, AL0.250$10,000
May 315:20 PM EDTF1Saint Clair, MI1.580$50,000
May 315:05 PM CDTF0Houston, TX0.220

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.