EF1 tornado, Society Hill to Prince Xrd, Alabama, January 21, 2017

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.

Rating

EF1

Date

January 21, 2017

Touchdown

8:48 AM CST (14:48 UTC)

Lifted

8:51 AM CST (14:51 UTC)

On the ground

3 minutes

Path length

2.8 miles (4.6 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

Counties

Lee and Macon counties

Touchdown point

32.474, -85.456

Lift-off point

32.509, -85.430

Record number

1701210848-01

28 damage points were recorded along this path by NWS BMX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 88 mph.

• hole in 1 part of roof and possible chimney collapse of 2nd portion
• Few branches down facing W
• 2 pines uprooted leaning NW
• Shingles with blue tarp on roof

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

After over a week of near-record to record high temperatures, several upper-level disturbances followed by a strong upper-level low pressure system produced multiple rounds of severe weather across Central Alabama. This system was characterized by strong upper-level winds and very cold upper-level temperatures. The first round produced one brief, weak tornado in St. Clair County on the evening of January 19. The second round occurred on the morning of January 20 with 12 tornadoes across Marengo, Elmore, Macon, Lee, Pike, and Barbour Counties. A third round produced damaging straight line winds on the night of January 21, including in the Birmingham metro area where the Birmingham airport measured a 75 mph wind gust and in Oneonta where 80 mph straight-line winds caused significant damage. A brief tornado also occurred in Tuscaloosa County with this activity. Finally, a fourth round moved through during the day on January 22 with 3 tornadoes across Bullock and Lee Counties.

National Weather Service meteorologists surveyed damage in northeast Macon County and determined that the damage was consistent with an EF1 tornado, with maximum sustained winds near 90 mph. The tornado touched down in far northeast Macon County about .25 mile southwest of the intersection of County Road 43 and County Road 24. Several trees were snapped off and one home suffered roof damage shortly after touch down. The tornado tracked north northeast for 1.85 miles where it produced additional tree damage, before exiting Macon County and into Lee County. One home along County Road 43 suffered roof damage.

National Weather Service meteorologists surveyed damage in southwest Lee County and determined that the damage was consistent with an EF0 tornado, with maximum sustained winds near 70 mph. A weak tornado formed along County Road 23 south of Sand Hill Road where several trees were uprooted. It crossed Sand Hill Road and Wrights Mill Road near Wright Crossroads, and then uprooted several trees at Springwood Drive and Old Creek Trail just inside the Auburn city limits. The tornado then dissipated as it approached Lake Ogletree.

National Weather Service meteorologists surveyed damage in southwest Lee County and determined that the damage was consistent with an EF0 tornado, with maximum sustained winds near 75 mph. This tornado began in northeast Macon County .25 mile southwest of the intersection of County Road 43 and County Road 24, and entered southwest Lee County .5 mile south of the intersection of CR 54 and CR 27. The tornado lifted shortly after crossing into Lee County near the Auburn University Fisheries.

National Weather Service meteorologists surveyed damage in central Lee County and determined that the damage was consistent with an EF0 tornado, with maximum sustained winds near 70 mph. A weak tornado formed near CR 413 about .25 mile south of Stringfellow Road, causing shingle damage and knocking down some branches. The tornado tracked north and dissipated just north of CR 417. Several trees were uprooted as it crossed CR 417.

National Weather Service meteorologists surveyed damage in Central Lee County and determined that the damage was consistent with an EF0 tornado, with maximum sustained winds near 65 mph. A weak tornado formed near the intersection of Ballard Avenue and Edgemont Street on the south side of Opelika, just east of Alabama State Road 51, where shingle damage occurred. A pine tree was knocked down as the tornado crossed Alabama State Road 169. Several pine trees were uprooted and more shingle damage occurred as the tornado crossed Old Columbus Road before dissipating.

National Weather Service meteorologists surveyed damage in southeast Lee County and determined that the damage was consistent with an EF0 tornado, with maximum sustained winds near 80 mph. A brief tornado touched down in the Haley Woods subdivision causing minor damage to several roofs and wooden fences. Damage was confined to houses near one intersection within the neighborhood.

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

26 minutes of warning. NWS BMX issued a tornado warning for this county at 14:22 UTC, 26 minutes before the tornado touched down, in force until 14:53 UTC.

The county was under a tornado watch, issued at 09:56 UTC and running to 16:18 UTC.

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 Storm Prediction Center had this point in a Enhanced Risk, with a 0.10 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 12:54 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 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.

Auburn-Opelika Apt (AUO), 14 km from the path, in the two hours either side.

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

The Maxwell AFB radar (KMXX), 33 km away, was scanning. The volume nearest the touchdown began at 14:45 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.

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

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

The live radar over the trackEvery 2017 tornado in AlabamaEvery tornado in Alabama since 1950Warnings in force in Alabama nowThe forecast where you are

59 more were confirmed in the United States that day.

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.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.