Tornadoes · United States · Alabama · 2020

EF1 tornado, Pleasant Hill to Double Spgs, Alabama, August 28, 2020

From Pleasant Hill to Double Spgs, this EF1 tornado ran 8.8 miles across Winston County on August 28, 2020, touching down at 4:02 PM CDT and reaching 325 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 mph

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

  2. EF186 to 110 mphthis tornado

    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
EF1
Date
August 28, 2020
Touchdown
4:02 PM CDT (21:02 UTC)
Lifted
4:18 PM CDT (21:18 UTC)
On the ground
16 minutes
Path length
8.8 miles (14.1 km)
Path width
325 yards (297 m)
Deaths
0
Injuries
0
County
Winston County
Touchdown point
34.203, -87.428
Lift-off point
34.267, -87.297
Record number
2008281502-01

The damage survey

44 damage points were recorded along this path by NWS BMX and NWS HUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.

  • Tornado likely continued eastward and then dissipated in a relatively inaccessible wooded area west of Collier Creek.
  • End Point. Tornado dissipated near a wooded area before crossing Cty Rd 2.
  • three sided lumber shed destroyed. pole barn structure.

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

Tropical Cyclone Laura moved inland over southwest Louisiana and tracked northeast along the Mississippi River. Several convective outer bands on the east side of Laura produced severe storms over Central Alabama. An abundance of tropical moisture coincided with areas of diurnal heating to promote an unstable atmosphere which also interacted with areas of favorable low-level wind shear. Straight-line winds caused the majority of the damage both days, but a few tornadoes also developed during the afternoon of August 28th.

National Weather Service meteorologists surveyed damage in northeastern Winston County and determined that it was consistent with an EF1 tornado, with maximum winds near 105 mph.||The tornado developed in a wooded area east of County Road 195. The tornado tracked northeast, crossing County Road 6 near Sandy Creek, where it caused minor timber damage. The tornado caused minor damage to the roof of a chicken house just off of County Road 415. The tornado continued northeast where it approached Highway 33 west of Moreland. The tornado caused notable timber damage as it crossed Highway 33, then it continued northeast across County Road 3163 where it removed sheathing from under a manufactured home, destroyed a small outbuilding, and removed portions of siding and sheathing from a manufactured home. The tornado then crossed County Road 63, or Cheatam Road, where it removed a portion of the roof from a manufactured home, damaged two garage doors, and blew out a window of an outdoor storage building. The tornado continued northeast before dissipating near Collier Creek.

NWS Meteorologists surveyed damage in northeastern Winston County and determined it was consistent with an EF1 tornado, with maximum winds near 95 mph.||The tornado developed near a mobile home manufacturing facility where it peeled portions of sheet metal from the roof of the building, removed some skirting from a modular building and blew out two windows from a vehicle. The tornado then crossed Highway 33 where it remained just north of County Road 24. The tornado continued east through wooded, uninhabited and inaccessible area. The tornado dissipated before reaching County Road 2, where there was no observable damage.

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.

The county was under a tornado watch, issued at 20:46 UTC and running to 01:00 UTC.

Issued (UTC)ExpiredProductOffice
15:31 UTC20:46 UTCTornado WatchBMX
20:46 UTC01:00 UTCTornado WatchBMX
21:36 UTC22:15 UTCTornado WarningBMX
22:10 UTC00:15 UTCFlood AdvisoryBMX
22:15 UTC22:30 UTCSevere Thunderstorm WarningBMX
22:21 UTC23:15 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 Slight Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 20:00 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

9.0 hours before the tornado, 129 km from the path. August 28, 2020.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2020-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 981 joules per kilogram, CIN -6, lifted condensation level 576 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 2020-08-28The 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 78 square meters per square second, 0 to 6 km bulk shear 23 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
981 J/kg
Mixed-layer CIN
-6 J/kg
Surface CAPE
1423 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
23 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3
0-3 km lapse rate
5.0 K/km

Open this sounding in Storm Lab

Birmingham, AL (KBMX), 00:00Z

3.0 hours after it, 129 km from the path. August 29, 2020.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2020-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 106 joules per kilogram, CIN -132, lifted condensation level 1064 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 2020-08-29The 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 171 square meters per square second, 0 to 6 km bulk shear 33 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
106 J/kg
Mixed-layer CIN
-132 J/kg
Surface CAPE
987 J/kg
Mixed-layer LCL
1064 m above ground
0-6 km bulk shear
33 kt
0-1 km bulk shear
28 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2
0-3 km lapse rate
5.5 K/km

Open this sounding in Storm Lab

The surface observations

Haleyville (1M4), 22 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
19:05 UTC180° 10 kt1012.2
19:10 UTC180° 14 kt1012.2
19:15 UTC190° 11 kt1011.9
19:20 UTC180° 11 kt191011.9
19:25 UTC190° 14 kt1011.5
19:30 UTC180° 13 kt191011.5
19:35 UTC170° 13 kt181011.5
19:40 UTC180° 14 kt1011.2
19:45 UTC 15 kt211011.2
19:50 UTC190° 15 kt1011.2
19:55 UTC190° 13 kt1011.5
19:56 UTC8475180° 13 kt201011.5
20:00 UTC170° 14 kt1011.5
20:05 UTC180° 11 kt1011.5
20:10 UTC190° 10 kt1011.5
20:15 UTC170° 11 kt1011.2
20:20 UTC190° 14 kt1011.5RA
20:25 UTC200° 14 kt1011.5+RA BR
20:30 UTC7771.6190° 12 kt201011.5+RA
20:35 UTC220° 13 kt1011.9+RA BR
20:40 UTC190° 5 kt1011.5RA BR
20:44 UTC73.473.4170° 5 kt1011.5VCTS -RA BR
20:45 UTC180° 5 kt1011.5-RA BR
20:50 UTC190° 7 kt1011.5-RA
20:55 UTC180° 7 kt1011.5-RA
20:56 UTC7674180° 7 kt1011.5VCTS -RA
21:00 UTC170° 9 kt1011.5RA
21:05 UTC230° 5 kt1011.9-RA
21:10 UTC210° 11 kt1011.9+RA
21:15 UTC170° 13 kt1011.2+RA BR
21:20 UTC160° 9 kt1011.2-RA BR
21:25 UTC210° 5 kt1011.2-RA
21:30 UTC190° 4 kt1011.5-RA
21:35 UTC260° 10 kt1012.2
21:39 UTC73.471.6260° 13 kt181012.5+TSRA BR
21:40 UTC 14 kt211012.5+RA BR
21:45 UTC260° 5 kt1011.9+RA BR
21:50 UTC250° 8 kt1012.2RA
21:55 UTC250° 10 kt1011.9RA
21:56 UTC7270250° 11 kt161011.9VCTS RA
22:00 UTC240° 11 kt1011.9RA
22:05 UTC210° 9 kt1011.9+RA
22:10 UTC200° 14 kt1011.9RA
22:15 UTC210° 14 kt1011.9RA
22:20 UTC210° 11 kt1011.9RA
22:25 UTC220° 15 kt1011.9+RA BR
22:30 UTC220° 16 kt1011.9RA
22:35 UTC210° 11 kt1011.5RA
22:40 UTC200° 10 kt1011.2RA
22:45 UTC190° 11 kt1011.2RA
22:50 UTC200° 13 kt1011.2-RA
22:55 UTC200° 8 kt1011.5-RA
22:56 UTC7169200° 8 kt1011.5-RA
23:00 UTC190° 9 kt1011.5-RA

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

The radar

The Columbus AFB radar (KGWX), 97 km away, was scanning. The volume nearest the touchdown began at 21:03 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
21:00 UTCTSTM WND DMGHamiltonMarion, ALA FEW TREES BLOWN DOWN IN THE HAMILTON AREA.
21:02 UTCTORNADO3 Se AshridgeWinston, ALNWS STORM SURVEY DETERMINED AN EF-1 TORNADO TOUCHED DOWN IN NORTH CENTRAL WINSTON COUNTY WITH PEAK EST WINDS OF 105 MPH AND MAX WIDTH OF 325 YARDS. MOST DAMAGE WAS CLUSTERED IN THE GRAYSON AND MORELAND AREAS NEAR HWY 33
21:11 UTCTSTM WND DMGSipsey River Rec AreaWinston, ALSEVERAL TREES DOWN ALONG CRANAL ROAD AT THE SIPSEY RIVER BRIDGE.
21:16 UTCTSTM WND DMG1 Se MorelandWinston, ALCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 SE MORELAND. AT LEAST 3 STRUCTURES WERE DAMAGED IN THE MORELAND COMMUNITY SOUTH OF GRAYSON. SEVERAL TREES WERE ALSO BLOWN DOWN. POSSIBLE TORNADO.
21:36 UTCTORNADO1 Nne Winston Free StatWinston, ALNWS STORM SURVEY DETERMINED A BRIEF EF-1 TORNADO OCCURRED IN THE DOUBLE SPRINGS AREA OF WINSTON COUNTY. MAX EST WINDS WERE 95 MPH WITH MAX WIDTH OF 100 YARDS. SPORADIC TIMBER DAMAGE OCCURRED NORTH OF CTY RD 24 BETWEEN WI
21:38 UTCTSTM WND DMG3 Nnw Winston County AiWinston, ALMULTIPLE TREES WERE BLOWN DOWN ALONG HIGHWAY 2 EAST OF HIGHWAY 33. POSSIBLE TORNADO.
21:39 UTCTSTM WND DMG11 Wsw HartselleLawrence, ALLAWRENCE CO. EMA REPORTS TREES DOWN IN THE SPEAKE COMMUNITY NEAR CR200.
21:50 UTCTSTM WND DMG1 Se MorelandWinston, ALA FEW STRUCTURES WERE DAMAGED IN THE MORELAND COMMUNITY SOUTH OF GRAYSON.
21:54 UTCTSTM WND DMG1 Nne Winston Free StatWinston, ALBUILDING MATERIAL SCATTERED ALL OVER THE PLACE AT WILKINS BUILDERS.
22:16 UTCTSTM WND DMGUpshawWinston, ALTREES WERE BLOWN DOWN. POSSIBLE TORNADO.
22:22 UTCTSTM WND DMG8 Wnw West PointCullman, ALSARDIS FIRE REPORTS DAMAGE TO A BARN AND TREES DOWN ON CR 1069 IN CULLMAN CO. POSSIBLE TORNADO.
22:25 UTCTSTM WND DMG7 Wnw West PointCullman, ALMOBILE HOME DAMAGE ON CR 1059 AND TREES DOWN AS WELL.
22:27 UTCTORNADO9 Wnw West PointCullman, ALNWS HUNTSVILLE STORM SURVEY CONCLUDED THAT THE DAMAGE IN NORTHWESTERN CULLMAN COUNTY WAS CONSISTENT WITH AN EF-1 TORNADO WITH WINDS OF 87 MPH.
22:40 UTCTSTM WND DMG5 N South VinemontCullman, ALTREES DOWN NORTH OF THE AIRPORT IN VINEMONT.
22:58 UTCTORNADO2 Se EvaCullman, ALNWS HUNTSVILLE AND MORGAN COUNTY EMA STORM SURVEY DETERMINED DAMAGE NEAR EVA OR NEAR THE CULLMAN COUNTY AND MORGAN COUNTY LINE WAS CONSISTENT WITH A SMALL BUT STRONG EF-0 TORNADO WITH WINDS OF 84 MPH.

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

This ground now

The live radar over the trackEvery 2020 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of August 28, 2020

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 281:26 AM CDTUnratedKingsbury, SD0.425
August 281:27 AM CDTEF1Kingsbury, SD0.625$75,000
August 282:08 AM CDTEF0Deuel, SD0.150
August 282:09 AM CDTEF0Deuel, SD0.220
August 282:09 AM CDTEF0Deuel, SD0.730
August 282:11 AM CDTEF1Deuel, SD0.940
August 286:33 AM CDTEF0Lafayette, MS1.150
August 284:36 PM CDTEF1Winston, AL2.6100
August 285:27 PM CDTEF1Cullman, AL5.6115
August 285:28 PM CDTEF0Warren, TN1.565$5,000
August 285:58 PM CDTEF0Morgan, AL0.240
August 287:24 PM CDTEF0Putnam, TN2.450$15,000

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.