Tornadoes · United States · Alabama · 2003

F0 tornado, Forkland to Cedarville, Alabama, April 25, 2003

From Forkland to Cedarville, this F0 tornado ran 4.4 miles across Hale and Greene counties on April 25, 2003, touching down at 2:25 PM CDT and reaching 50 yards wide. It killed nobody, and did $103,000 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
April 25, 2003
Touchdown
2:25 PM CDT (19:25 UTC)
Path length
4.4 miles (7.1 km)
Path width
50 yards (46 m)
Deaths
0
Injuries
0
Property damage
$103,000
Counties
Hale and Greene counties
Touchdown point
32.600, -87.820
Lift-off point
32.620, -87.750
Record number
834

What the Weather Service recorded

A tornado touched down near the Greene County Power Plant. The tornado moved across the power plant facility and crossed the Black Warrior into Hale County. Numerous trees were blown down along the path with the most extensive damage occurring right along the river. One mobile home was destroyed by a falling tree. One church had shingle damage to its roof . No injuries occurred.Beg: 32 36.230/87 49.016 End: 32 36.373/87 44.662

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. One was issued for the county at another hour that day.

Issued (UTC)ExpiredProductOffice
03:22 UTC07:15 UTCFlash Flood WarningBMX
04:28 UTC05:00 UTCSevere Thunderstorm WarningBMX
06:58 UTC09:00 UTCFlash Flood WarningBMX
17:26 UTC18:00 UTCTornado WarningBMX
17:59 UTC18:30 UTCTornado WarningBMX
18:30 UTC19:00 UTCTornado 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, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 12:48 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

7.4 hours before the tornado, 113 km from the path. April 25, 2003.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2003-04-25Temperature 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 -69166, lifted condensation level 651 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 2003-04-25The 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 264 square meters per square second, 0 to 6 km bulk shear 54 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
-69166 J/kg
Surface CAPE
0 J/kg
Mixed-layer LCL
651 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
299 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
4.5 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 00:00Z

4.6 hours after it, 113 km from the path. April 26, 2003.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2003-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 770 joules per kilogram, CIN -26, lifted condensation level 1082 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 2003-04-26The 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 -18 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
770 J/kg
Mixed-layer CIN
-26 J/kg
Surface CAPE
703 J/kg
Mixed-layer LCL
1082 m above ground
0-6 km bulk shear
68 kt
0-1 km bulk shear
18 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1
0-3 km lapse rate
7.0 K/km

Open this sounding in Storm Lab

The radar

The Birmingham radar (KBMX), 114 km away, was scanning. The volume nearest the touchdown began at 19:26 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 2003 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of April 25, 2003

14 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
April 254:55 AM CDTF0Okaloosa, FL0.120$10,000
April 255:10 AM CDTF0Okaloosa, FL0.120$10,000
April 255:20 AM CDTF0Walton, FL0.275$100,000
April 2510:42 AM EDTF0Orangeburg, SC5.060
April 2510:05 AM CDTF0Gulf, FL0.250$250,000
April 2511:57 AM CDTF1Pickens, AL0.150$100,000
April 252:40 PM EDTF0Alachua, FL0.110
April 252:54 PM EDTF0Glynn, GA0.110
April 253:00 PM EDTF0Suwannee, FL1.050
April 253:05 PM EDTF0Alachua, FL0.110
April 252:43 PM CDTF0Alexander, IL0.330
April 254:09 PM CDTF1Marshall, KY1.5100$30,000
April 253:10 PM MDTF0Fergus, MT2.025
April 254:24 PM CDTF0Elmore, AL0.650$40,000

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.