EF1 tornado, College Grove to Cedar Grove, Tennessee, January 30, 2013

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 30, 2013

Touchdown

3:41 AM CST (09:41 UTC)

Lifted

3:46 AM CST (09:46 UTC)

On the ground

5 minutes

Path length

4.6 miles (7.4 km)

Path width

150 yards (137 m)

Deaths

0

Injuries

0

Property damage

$530,000

Crop damage

$125,000

Counties

Williamson and Rutherford counties

Touchdown point

35.739, -86.703

Lift-off point

35.759, -86.625

Record number

1301300341-01

48 damage points were recorded along this path by NWS OHX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 95 mph.

• Tree was uprooted onto a house crushing south part of roof
• A large tree was uprooted onto a pavillion in front of an elementary school causing severe damage to the structure. Several shingles were also blown off the roof of the pavillion.
• A home on Liberty Pike at Cadet Lane suffered minor roof damage
• Several trees were blown down north of Liberty Pike between Cadet Lane and Flintlock Drive. A few outbuildings were damaged and fences were blown down.

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

A powerful upper level trough moved across the United States from Tuesday, January 29th into Wednesday, January 30th. This system contained unusually strong winds aloft, with wind speeds of 80 mph just 2500 feet above the surface and up to 150 mph at 20,000 feet. A record warm airmass with temperatures in the 60s and 70s spread northward ahead of the system into the Tennessee and Ohio Valleys, bringing weak atmospheric instability into the region. As a powerful cold front moved eastward across Middle Tennessee during the early morning hours of January 30, the strong low level jet ahead of the front caused strong gradient winds of 40 to 65 mph at the surface, resulting in several reports of wind damage. A peak sustained south wind of 45 mph with a peak gust of 64 mph was measured by the ASOS at the Nashville International Airport around 315 AM CST in association with these intense gradient winds. A line of showers and thunderstorms known as a Quasi-Linear Convective System (QLCS) developed along the front near the Tennessee River and raced eastward through the area between 2 AM and 6 AM, producing at least 23 tornadoes and widespread wind damage. This severe weather event resulted in 1 fatality and at least 3 injuries across the Mid State. The total of 23 tornadoes made the January 30, 2013 event the largest January tornado outbreak in Middle Tennessee history. It also made January 30, 2013 the second biggest outbreak of tornadoes for any month in Middle Tennessee history.

An EF0 tornado touched down west of Horton Highway around 3 miles west of Eagleville. Farm buildings on the west side of Horton Highway were damaged with one outbuilding destroyed. Several trees were also snapped or uprooted. The tornado then crossed Horton Highway into Rutherford County.

A tornado moved out of Williamson County into Rutherford County and strengthened to EF1 intensity as it crossed Horton Highway around 3 miles west of Eagleville. Two farm buildings were heavily damaged on the east side of Horton Highway and a couple of homes received minor roof damage on Allisona road. The most significant damage occurred less than one mile north of Eagleville along North Main Street, Elm Street, and Oak Street where several homes received roof and siding damage. At least four barns were damaged between Oak Street and Swamp Road before the tornado lifted east of swamp road. Dozens of trees were snapped or uprooted along the path with some falling on homes.

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

25 minutes of warning. NWS OHX issued a tornado warning for this county at 09:16 UTC, 25 minutes before the tornado touched down, in force until 10:00 UTC.

The county was under a tornado watch, issued at 04:10 UTC and running to 10:00 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 General Thunderstorms Risk. The outlook in force was issued at 06:09 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 Nashville radar (KOHX), 56 km away, was scanning. The volume nearest the touchdown began at 09:42 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 2013 tornado in TennesseeEvery tornado in Tennessee since 1950Warnings in force in Tennessee nowThe forecast where you are

44 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.