EF1 tornado, Marshes Siding, Kentucky, March 12, 2020

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

March 12, 2020

Touchdown

10:07 PM EDT (02:07 UTC)

Lifted

10:09 PM EDT (02:09 UTC)

On the ground

2 minutes

Path length

1.7 miles (2.7 km)

Path width

175 yards (160 m)

Deaths

0

Injuries

0

Property damage

$150,000

Crop damage

$55,000

County

McCreary County

Touchdown point

36.730, -84.480

Lift-off point

36.730, -84.450

Record number

2003122007-01

1 damage points were recorded along this path by NWS JKL, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 80 mph.

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

Severe thunderstorms downed trees and powerlines, while also causing damage to some buildings and homes across McCreary County during the late evening hours of March 12th.||One of these storms produced an EF-1 tornado just north of downtown Whitley City. A supercell thunderstorm tracked across McCreary County during the late evening hours of March 12th. A National Weather Service Jackson survey team found intermittent damage along the entire path. There were three distinct areas of damage where the tornado touched down. On Chitwood Ridge Rd, several hardwood trees were snapped off. There was also a house that sustained some roof damage. The next area of tornado damage was on the northern side of Whitley City along north Highway 1651, where more hardwood trees were snapped off along with some damage to a few two-story buildings. Finally, the third area of tornado damage was northeast of Whitley City on Stephens Farm Rd. A tree landed on a house, leading to major damage. There were also several more houses with roof damage and additional trees snapped off.||Large hail was also reported in McCreary and Wayne Counties as these strong to severe thunderstorms moved through. Additionally, periodic heavy and training rainfall led to flooding in portions of Floyd and Pike Counties as localized amounts of 2-3 inches fell early on March 13th. Floyd County was forced to declare a State of Emergency as low-lying portions of Abbott Creek along Kentucky Highway 1427 and Middle Creek Levisa Fork along Kentucky Highway 114 were hit hard.

A supercell thunderstorm tracked across McCreary County during the late evening hours of March 12th. A National Weather Service Jackson survey team found intermittent damage along the entire path. There were three distinct areas of damage where the tornado touched down. On Chitwood Ridge Rd, several hardwood trees were snapped off. There was also a house with some roof damage.||The next area of tornado damage was on the northern side of Whitley City along north Highway 1651, where more hardwood trees were snapped off along with some damage to a few two-story buildings.||Finally, the third area of tornado damage was northeast of Whitley City on Stephens Farm Rd. A tree landed on a house, leading to major damage. There were also several more houses with roof damage and additional trees snapped off.

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

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down. One was issued for the county at another hour that day.

The county was under a tornado watch, issued at 22:10 UTC and running to 03:26 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, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 00:59 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 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.

Williamsburg (BYL), 25 km from the path, in the two hours either side.

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

The Knoxville radar (KMRX), 114 km away, was scanning. The volume nearest the touchdown began at 02:05 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 2020 tornado in KentuckyEvery tornado in Kentucky since 1950Warnings in force in Kentucky nowThe forecast where you are

2 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.