EF1 tornado, Carrollton, Georgia, April 3, 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

April 3, 2017

Touchdown

10:58 AM EDT (14:58 UTC)

Lifted

11:02 AM EDT (15:02 UTC)

On the ground

4 minutes

Path length

2.4 miles (3.8 km)

Path width

300 yards (274 m)

Deaths

0

Injuries

0

Property damage

$50,000

County

Carroll County

Touchdown point

33.569, -85.114

Lift-off point

33.583, -85.076

Record number

1704030858-01

A strong short wave and associated surface low swept through the southern and eastern U.S. and combined with moderate instability and strong shear resulted in widespread severe weather, including numerous tornadoes, across north and central Georgia from late morning through the afternoon.

A National Weather Service survey team found that a brief EF-1 tornado with maximum wind speeds of 90 MPH and a maximum path width of 300 yards touched down over central Carroll County, near the University of West Georgia. The tornado tracked northeast then turned more easterly before dissipating near Highway 27 in Carrollton. Much of the tornado damage was snapped and uprooted trees, however, significant structural damage occurred to a fire station off Brumbelow Road. A Styrofoam-core metal roof was pulled off of the building and in the process, a portion of a concrete exterior wall was destroyed. Numerous large trees were snapped or uprooted across the street from this location. Based on this damage, estimated|winds were around 90 mph which resulted in an EF-1 rating for this tornado. No injuries were reported. [04/03/17: Tornado #1, County #1/1, EF-1, Carroll, 2017:033].

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

1 minute of warning. NWS FFC issued a tornado warning for this county at 14:57 UTC, 1 minute before the tornado touched down, in force until 15:30 UTC.

The county was under a severe thunderstorm watch, issued at 14:50 UTC and running to 17:14 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 Slight Risk. The outlook in force was issued at 12:41 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.

Carrollton (CTJ), 8 km from the path, in the two hours either side.

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

The Atlanta radar (KFFC), 54 km away, was scanning. The volume nearest the touchdown began at 14:57 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 GeorgiaEvery tornado in Georgia since 1950Warnings in force in Georgia nowThe forecast where you are

39 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.