EF1 tornado, Grandberry Crossroads to Haleburg, Alabama, January 22, 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 22, 2017

Touchdown

1:02 PM CST (19:02 UTC)

Lifted

1:14 PM CST (19:14 UTC)

On the ground

12 minutes

Path length

5.5 miles (8.9 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

Property damage

$100,000

County

Henry County

Touchdown point

31.338, -85.251

Lift-off point

31.371, -85.166

Record number

1701221302-01

20 damage points were recorded along this path by NWS TAE, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 109 mph.

• Mobile home destroyed when it rolled.
• Trees downed. Tornado started near here.
• Trees snapped and uprooted.
• Trees snapped and uprooted

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

A multi-day severe weather event struck the southeast January 21-22, 2017 with three rounds of severe weather moving through the area. The first round of severe weather started during the mid-morning hours on Saturday, January 21, 2017 as a squall line pushed into southeast Alabama and the Florida panhandle. As it pushed eastward nine warnings were issued with a total of 18 damaging wind reports (trees and power lines downed) related to these storms.||After a brief lull during Saturday evening as the aforementioned squall line washed out near the Gulf Coast, strong southerly flow returned late Saturday night as a warm front pushed northward across the Florida Big Bend and southern Georgia. Initially with this late Saturday night to early Sunday morning event, a strong supercell moved across southern Georgia producing a tornado that moved across Thomas and northern Brooks Counties. This was the first tornado across the area with this multi- day event. From the same supercell that produced the tornado in Thomas and northern Brooks Counties, another tornado developed that tracked across Brooks, Berrien and Cook Counties and this tornado resulted in 11 fatalities. This overnight into early Sunday morning event produced one more tornado, an EF-1 that struck Lowndes County.||A final round of severe weather moved through Sunday afternoon as a warm front continued to push northward into southeast Alabama and southern Georgia while the main low and trailing cold front pushed eastward across the Florida panhandle and offshore regions. This afternoon round of supercells first produced a tornado in Henry County, AL. An hour and a half after the Henry County tornado, two more tornadoes developed, an EF-2 that struck Clay, Randolph and Calhoun Counties (Georgia) and an EF-1 tornado that hit Franklin County, FL. After this, a long tracked tornado (track length of more than 70 miles) moved across Albany (Dougherty County) and into Worth and Turner Counties, causing extensive damage and five fatalities.||Overall this multi-day event resulted in seven tornadoes, 16 deaths and numerous injuries. Three days of damage surveys were conducted to rate the tornadoes on the Enhanced Fujita scale.

An EF1 tornado tracked across southern Henry County, snapping and uprooting numerous trees, destroying a mobile home, and causing minor roof damage to a few structures. Max winds were estimated at 110 mph. Damage cost was estimated.

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

6 minutes of warning. NWS TAE issued a tornado warning for this county at 18:56 UTC, 6 minutes before the tornado touched down, in force until 19:30 UTC.

The county was under a tornado watch, issued at 17:47 UTC and running to 20:14 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 High Risk, with a 0.30 chance of a tornado within 25 miles, in the hatched area where significant tornadoes were expected. The outlook in force was issued at 16:28 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.

The Ft Rucker radar (KEOX), 27 km away, was scanning. The volume nearest the touchdown began at 19:02 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

20 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.