Tornadoes · United States · Alabama · 2021

EF0 tornado, Little Texas, Alabama, August 30, 2021

This EF0 tornado ran 0.5 miles across Macon County on August 30, 2021, touching down at 3:45 PM CDT and reaching 75 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mphthis tornado

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

  2. EF186 to 110 mph

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

  3. EF2111 to 135 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. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 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
EF0
Date
August 30, 2021
Touchdown
3:45 PM CDT (20:45 UTC)
Lifted
3:46 PM CDT (20:46 UTC)
On the ground
1 minutes
Path length
0.5 miles (0.8 km)
Path width
75 yards (69 m)
Deaths
0
Injuries
0
County
Macon County
Touchdown point
32.398, -85.598
Lift-off point
32.403, -85.593
Record number
2108301445-01

The damage survey

4 damage points were recorded along this path by NWS BMX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 75 mph.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

The remnants of Tropical Cyclone Ida traveled across portions of the Deep South on Monday, August 30th, and into Tuesday, August 31st. Bands of tropical downpours and thunderstorms moved northward across Central Alabama on the east of Ida`s circulation. It was in this general area where instability and low-level wind shear values were sufficient for a few rotating thunderstorms. Two EF0 tornadoes were confirmed across the southeast portions of Central Alabama on August 30th. The combination of heavy rain and breezy conditions also downed some trees in several counties on August 31st.

National Weather Service meteorologists surveyed damage in eastern Macon County and determined that it was consistent with an EF0 tornado, with maximum winds near 75 mph.||A brief tornado touched down just west of Red Oak Lane. The tornado traveled northeast and crossed Red Road before dissipating. Damage consisted of a few uprooted trees and partial loss of siding from a mobile home.

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

The warnings

1 minute of warning. NWS BMX issued a tornado warning for this county at 20:44 UTC, 1 minute before the tornado touched down, in force until 20:58 UTC.

Issued (UTC)ExpiredProductOffice
12:00 UTC15:50 UTCFlash Flood WatchBMX
15:00 UTC17:26 UTCWind AdvisoryBMX
20:44 UTC20:58 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 Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:55 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

8.8 hours before the tornado, 141 km from the path. August 30, 2021.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 6 joules per kilogram, CIN -242, lifted condensation level 1267 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 2021-08-30The 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 175 square meters per square second, 0 to 6 km bulk shear 29 knots.1939Sfc1 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
6 J/kg
Mixed-layer CIN
-242 J/kg
Surface CAPE
294 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
29 kt
0-1 km bulk shear
27 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 00:00Z

3.2 hours after it, 141 km from the path. August 31, 2021.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2021-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 182 joules per kilogram, CIN -12, lifted condensation level 524 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 2021-08-31The 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 268 square meters per square second, 0 to 6 km bulk shear 46 knots.193958Sfc1 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
182 J/kg
Mixed-layer CIN
-12 J/kg
Surface CAPE
203 J/kg
Mixed-layer LCL
524 m above ground
0-6 km bulk shear
46 kt
0-1 km bulk shear
39 kt
0-1 km storm-relative helicity
268 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

The surface observations

Auburn-Opelika Apt (AUO), 28 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
18:45 UTC140° 5 kt1015.2
18:50 UTC140° 5 kt1015.2
18:55 UTC120° 5 kt1014.9
18:56 UTC8076130° 5 kt1014.9
19:00 UTC140° 7 kt1014.9
19:05 UTC140° 5 kt1014.9
19:10 UTC130° 5 kt1014.9
19:15 UTC130° 5 kt1014.9
19:20 UTC150° 8 kt1014.6
19:25 UTC150° 8 kt1014.6
19:30 UTC160° 7 kt1014.6
19:35 UTC150° 7 kt1014.6
19:40 UTC140° 8 kt1014.2
19:45 UTC150° 8 kt1014.2
19:50 UTC140° 8 kt1014.2
19:55 UTC150° 7 kt1014.2
19:56 UTC8075150° 7 kt1014.2
20:00 UTC150° 5 kt1014.2
20:05 UTC120° 5 kt1014.2
20:10 UTC140° 7 kt1013.9
20:15 UTC130° 7 kt1013.9
20:20 UTC140° 5 kt1013.5
20:25 UTC140° 5 kt1013.5
20:30 UTC140° 5 kt1013.5
20:35 UTC140° 5 kt1013.5
20:40 UTC150° 8 kt1013.5
20:45 UTC140° 7 kt1013.5
20:50 UTC140° 7 kt1013.5
20:55 UTC150° 5 kt1013.5
20:56 UTC8076140° 6 kt1013.5
21:00 UTC130° 5 kt1013.2
21:05 UTC130° 5 kt1013.2
21:10 UTC120° 5 kt1012.9
21:11 UTC78.875.2130° 6 kt1012.9VCTS
21:15 UTC 16 kt221013.9
21:20 UTC210° 22 kt1014.2+RA BR
21:25 UTC71.671.6210° 13 kt341014.2+TSRA BR
21:25 UTC200° 13 kt1014.2+RA BR
21:30 UTC 14 kt1014.2+RA BR
21:30 UTC71.671.6190° 14 kt231014.2+TSRA BR
21:35 UTC190° 8 kt1014.2RA BR
21:38 UTC71.671.6190° 9 kt1013.9TSRA BR
21:40 UTC190° 11 kt161013.9RA BR
21:45 UTC190° 8 kt1013.9RA BR
21:50 UTC190° 11 kt1013.5RA
21:55 UTC190° 8 kt1013.5-RA
21:56 UTC7271200° 8 kt151013.5VCTS -RA
22:00 UTC170° 8 kt1013.5-RA
22:04 UTC71.671.6170° 7 kt1013.5-RA
22:05 UTC170° 8 kt1013.5-RA
22:10 UTC160° 8 kt1013.2-RA
22:15 UTC160° 5 kt1013.2-RA
22:20 UTC130° 5 kt1013.2-RA
22:25 UTC140° 5 kt1013.2
22:30 UTC140° 5 kt1013.2
22:35 UTC120° 5 kt1013.2
22:40 UTC120° 4 kt1013.2

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

The radar

The Maxwell AFB radar (KMXX), 24 km away, was scanning. The volume nearest the touchdown began at 20:44 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.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
20:45 UTCTORNADO5 Ese Lake TuskegeeMacon, ALNWS STORM SURVEY PERSONNEL FOUND DAMAGE CONSISTENT WITH A BRIEF EF-0 TORNADO NEAR RED RD, GENERALLY EAST SOUTHEAST OF TUSKEGEE, AL. A FEW TREES AND TREE LIMBS WERE BLOWN DOWN, AND ONE RESIDENCE SUSTAINED MINOR DAMAGE TO

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2021 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of August 30, 2021

10 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 304:18 AM CDTEF0Harrison, MS0.2150$50,000
August 305:55 AM CDTEF0Harrison, MS0.5100$50,000
August 307:44 AM CDTEF0Harrison, MS0.5100$50,000
August 307:49 AM CDTEF0Harrison, MS1.0200$100,000
August 307:50 AM CDTEF0Harrison, MS3.5125$100,000
August 307:56 AM CDTEF0Harrison, MS1.1150$150,000
August 309:37 AM CDTEF0Jackson, MS10.250$200,000
August 3012:20 PM CDTEF1Mobile, AL10.01753
August 301:25 PM CDTEF1Clarke, AL3.5150
August 302:02 PM CDTEF0Pike, AL3.275

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.