Tornadoes · United States · Kentucky · 2016

EF0 tornado, Bristletown, Kentucky, August 20, 2016

This EF0 tornado ran 1.6 miles across Barren County on August 20, 2016, touching down at 6:30 PM CDT and reaching 30 yards wide. It killed nobody, and did $50,000 of property damage.

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
August 20, 2016
Touchdown
6:30 PM CDT (23:30 UTC)
Lifted
6:33 PM CDT (23:33 UTC)
On the ground
3 minutes
Path length
1.6 miles (2.5 km)
Path width
30 yards (27 m)
Deaths
0
Injuries
0
Property damage
$50,000
Crop damage
$50,000
County
Barren County
Touchdown point
36.943, -85.873
Lift-off point
36.950, -85.846
Record number
1608201730-01

What the Weather Service recorded

Low-topped showers with weak rotation were observed late in the afternoon on August 20 over south-central Kentucky. One shower spawned a brief EF-0 tornado south of Glasgow in Barren County.

Low-topped showers with weak rotation were observed late in the afternoon on August 20 over south-central Kentucky. One shower spawned a brief tornado south of Glasgow in Barren County. The tornado touched down at approximately 5:30 pm CDT in a cornfield near Morrison Park Road, just east of Tompkinsville Road. The tornado moved east-northeast, roughly paralleling Morrison Park Road, flattening corn on several farms. Structural damage was observed on one farm, where the metal roof was torn off a barn, and minor damage occurred to several other buildings as a result of this debris. Several trees were snapped or uprooted before the tornado lifted at 5:33 PM CDT, just east of Highway 90.

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

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

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 19:59 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.

Nashville Metro, TN (KBNA), 12:00Z

11.5 hours before the tornado, 112 km from the path. August 20, 2016.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2016-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 566 joules per kilogram, CIN -12, lifted condensation level 583 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, Nashville Metro, TN at 12:00Z on 2016-08-20The 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 78 square meters per square second, 0 to 6 km bulk shear 27 knots.193958Sfc1 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
566 J/kg
Mixed-layer CIN
-12 J/kg
Surface CAPE
929 J/kg
Mixed-layer LCL
583 m above ground
0-6 km bulk shear
27 kt
0-1 km bulk shear
15 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0
0-3 km lapse rate
4.7 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 00:00Z

0.5 hours after it, 112 km from the path. August 21, 2016.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2016-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 299 joules per kilogram, CIN -38, lifted condensation level 841 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, Nashville Metro, TN at 00:00Z on 2016-08-21The 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 120 square meters per square second, 0 to 6 km bulk shear 30 knots.193958Sfc1 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
299 J/kg
Mixed-layer CIN
-38 J/kg
Surface CAPE
1593 J/kg
Mixed-layer LCL
841 m above ground
0-6 km bulk shear
30 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.8
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

The radar

The Nashville radar (KOHX), 100 km away, was scanning. The volume nearest the touchdown began at 23:28 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
21:53 UTCTSTM WND DMG4 N Temple HillBarren, KYSEVERAL TREES DOWN AND A BARN BLOWN DOWN.
22:32 UTCTORNADO5 S LectaBarren, KYEF-0 TORNADO... MAX WIND 70-80 MPH...30 YARD PATH WIDTH...CORN FLATTENED AND ROOF TORN OFF A LARGE METAL OUTBUILDING.

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

This ground now

The live radar over the trackEvery 2016 tornado in KentuckyEvery tornado in Kentucky since 1950Warnings in force in Kentucky nowThe forecast where you are

The other tornadoes of August 20, 2016

12 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 2010:03 AM CDTEF0Kewaunee, WI0.7125$25,000
August 201:13 PM EDTEF1Allegan, MI10.6150$2.0 million
August 201:42 PM EDTEF1Allegan, MI12.8100$1.5 million
August 202:18 PM EDTEF1Ottawa, MI4.1100$500,000
August 202:34 PM EDTEF0Kent, MI4.375$500,000
August 202:50 PM EDTEF0Kent, MI0.950$25,000
August 202:53 PM EDTEF0Kosciusko, IN1.610
August 203:10 PM EDTEF1Ionia, MI7.8100$750,000
August 203:19 PM EDTEF0Elkhart, IN0.150
August 205:42 PM EDTEF0Allen, IN2.470
August 206:15 PM EDTEF0Darke, OH4.750$11,000
August 206:37 PM EDTEF0Delaware, OH3.3100$20,000

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.