Tornadoes · United States · Alabama · 2018

EF0 tornado, Pogo, Alabama, November 1, 2018

This EF0 tornado ran 1.9 miles across Franklin County on November 1, 2018, touching down at 6:05 AM CDT and reaching 90 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
November 1, 2018
Touchdown
6:05 AM CDT (11:05 UTC)
Lifted
6:10 AM CDT (11:10 UTC)
On the ground
5 minutes
Path length
1.9 miles (3.1 km)
Path width
90 yards (82 m)
Deaths
0
Injuries
0
County
Franklin County
Touchdown point
34.540, -88.140
Lift-off point
34.560, -88.110
Record number
1811010505-01

The damage survey

3 damage points were recorded along this path by NWS HUN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 65 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

A broken line of showers produced a brief tornado in northwest Alabama (Franklin County) about an hour before sunrise.

Softwood trees were used as the primary damage indicator. A couple small trees were uprooted and several larger trees had large branches snapped. The path of the damage was generally north of CR 96, beginning at the Mississippi state line, extending northeast through CR 11, north of Pogo, AL.

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

The warnings

8 minutes of warning. NWS HUN issued a tornado warning for this county at 10:57 UTC, 8 minutes before the tornado touched down, in force until 11:15 UTC.

The county was under a tornado watch, issued at 10:27 UTC and running to 12:51 UTC.

Issued (UTC)ExpiredProductOffice
10:27 UTC12:51 UTCTornado WatchHUN
10:44 UTC11:15 UTCSevere Thunderstorm WarningHUN
10:57 UTC11:15 UTCTornado WarningHUN
11:08 UTC12:00 UTCSevere Thunderstorm WarningHUN
11:14 UTC11:23 UTCTornado WarningHUN

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. The outlook in force was issued at 06:00 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.

Little Rock, AR (KBYH), 00:00Z

11.1 hours before the tornado, 170 km from the path. November 1, 2018.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2018-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 381 joules per kilogram, CIN -22, lifted condensation level 535 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, Little Rock, AR at 00:00Z on 2018-11-01The 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 220 square meters per square second, 0 to 6 km bulk shear 58 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
381 J/kg
Mixed-layer CIN
-22 J/kg
Surface CAPE
15 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
58 kt
0-1 km bulk shear
30 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
262 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8
0-3 km lapse rate
5.3 K/km

Open this sounding in Storm Lab

Little Rock, AR (KBYH), 12:00Z

0.9 hours after it, 170 km from the path. November 1, 2018.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2018-11-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 3 joules per kilogram, CIN 0, lifted condensation level 444 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, Little Rock, AR at 12:00Z on 2018-11-01The 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 21 square meters per square second, 0 to 6 km bulk shear 59 knots.1939587897117136156Sfc1 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
3 J/kg
Mixed-layer CIN
0 J/kg
Surface CAPE
23 J/kg
Mixed-layer LCL
444 m above ground
0-6 km bulk shear
59 kt
0-1 km bulk shear
16 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
3.5 K/km

Open this sounding in Storm Lab

The radar

The Columbus AFB radar (KGWX), 75 km away, was scanning. The volume nearest the touchdown began at 11:06 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
10:45 UTCTSTM WND DMGRed BayFranklin, ALTREES DOWN AROUND RED BAY.
11:05 UTCTORNADO7 N Red BayFranklin, ALAN EF0 TORNADO TRACKED NORTHEAST FOR 1.95 MILES ACROSS A PART OF NORTHWESTERN FRANKLIN COUNTY, AL. IT TOUCHED DOWN 3.5 MILES ENE OF BELMONT, AL AND LIFTED 0.5 MILES NORTH OF POGO, AL. A COUPLE OF TREES WERE UPROOTED AND
11:12 UTCTSTM WND DMG5 Ne HodgesFranklin, ALTREE DOWN ON AL 187.
11:36 UTCTSTM WND DMG1 S FlorenceLauderdale, ALPOWER LINE IN TREES.
11:46 UTCTSTM WND DMG1 Ese Saint FlorianLauderdale, ALTREE DOWN ON COUNTY ROAD 22 AND KASMEIER RD, BLOCKING THE ROAD.

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

This ground now

The live radar over the trackEvery 2018 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

The other tornadoes of November 1, 2018

34 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
November 11:00 AM CDTEF2Avoyelles Parish, LA5.7800$10,000
November 11:13 AM CDTEF1Avoyelles Parish, LA12.6350$12,000
November 11:24 AM CDTEF1Catahoula Parish, LA10.19001$310,000
November 11:30 AM CDTEF1Concordia Parish, LA1.1150$40,000
November 12:04 AM CDTEF1Adams, MS5.0250$500,000
November 12:09 AM CDTEF2Adams, MS1.0200$500,000
November 12:30 AM CDTEF1Claiborne, MS1.1200$50,000
November 12:31 AM CDTEF1Claiborne, MS3.5200$30,000
November 12:39 AM CDTEF1Franklin, MS13.6400$40,000
November 12:53 AM CDTEF1East Feliciana Parish, LA4.2100
November 13:00 AM CDTEF0Hinds, MS0.8150$25,000
November 13:03 AM CDTEF1Yazoo, MS4.0560$50,000
November 13:10 AM CDTEF1Franklin, MS3.0500$75,000
November 13:29 AM CDTEF0Copiah, MS2.2200$100,000
November 13:29 AM CDTEF0Amite, MS3.150
November 13:33 AM CDTEF1Saint Helena Parish, LA1.175
November 13:33 AM CDTEF1Madison, MS1.3300$15,000
November 13:36 AM CDTEF2Washington Parish, LA10.91252
November 13:53 AM CDTEF2Washington Parish, LA4.3275
November 13:53 AM CDTEF0Rankin, MS2.8200$15,000
November 13:57 AM CDTEF1Tangipahoa Parish, LA0.575
November 14:13 AM CDTEF0Calhoun, MS0.475$300,000
November 14:20 AM CDTEF1Scott, MS9.4550$15,000
November 14:23 AM CDTEF0Saint Tammany Parish, LA0.330
November 14:29 AM CDTEF1Rankin, MS4.5300$35,000
November 15:01 AM CDTEF1Smith, MS4.0150$20,000
November 15:16 AM CDTEF0Pearl River, MS1.465
November 15:22 AM CDTEF0Winston, MS2.075$70,000
November 15:53 AM CDTEF1Harrison, MS7.2150
November 16:23 AM CDTEF1Jackson, MS4.0100
November 16:40 AM CDTEF1Jackson, MS4.8100
November 17:08 AM CDTEF0Choctaw, AL0.1100
November 112:12 PM CDTEF0Lee, AL2.650
November 15:25 PM CDTEF0Miller, MO0.020

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.