EF0 tornado, Lewisport to Adair, Kentucky, September 8, 2018

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.

Rating

EF0

Date

September 8, 2018

Touchdown

5:42 PM CDT (22:42 UTC)

Lifted

5:54 PM CDT (22:54 UTC)

On the ground

12 minutes

Path length

5.0 miles (8.0 km)

Path width

50 yards (46 m)

Deaths

0

Injuries

0

Property damage

$6,000

County

Hancock County

Touchdown point

37.897, -86.884

Lift-off point

37.949, -86.818

Record number

1809081642-01

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

• multiple uprooted trees in back part of property facing NW. trees near house had S and SW facing direction.
• several large limbs and a tree trunk snapped, leaves splattered on S side of vehicle
• several large limbs and a tree trunk snapped, leaves spattered against S side of vehicle
• multiple large limbs and a few trunks snapped on Thomas Lane, laying down to E and NE

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

On September 5, 2018, the remnants of Tropical Storm Gordon moved north from the Gulf of Mexico. It carried copious amounts of moisture as it continued to rotate while slowly moving north. In Kentucky, the outer bands of the system brought showers and thunderstorms that produced isolated wind damage September 5 and 6. By September 8th, Gordon was centered in southeast Missouri with much of its moisture and energy in the Ohio River Valley interacted with a stationary front. This produced efficient rainfall that caused flash flooding, and the environmental shear was strong enough to produce two tornadoes along the Ohio River in southern Indiana and north-central Kentucky.

This tree-top level tornado did all of its damage 20 to 30 feet above ground. Never more than 50 yards wide, the first evidence of the tornado touching down was one mile south of the water tower on Thomas Lane, where it downed several large branches that blocked the road. Moving northeast over forested land, the next evidence was more tree trunks and branches snapped on Poplar Grove Rd just north of the intersection with Hilldale Rd. The tornado then continued to skip northeast, snapping branches and trunks to the west of Frank Luttrell Rd, before crossing the road and causing minor roof damage to the metal roof of a barn and snapping more tree limbs a third of a mile southeast of North Hancock Elementary School. The tornado dropped small branches and leaves along its path as it continued northeast. The last major tree damage was observed around a home on Adair Rd, where trees were uprooted and trunks snapped in a cyclonic pattern around the home. The only damage to the home, however, was minor roof damage from a branch falling on it. The storm then crossed Adair Rd, lifting somewhere in a wooded area west of a large pond near Beauchamp Lane, where residents witnessed its dissipation.

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.

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 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 21:57 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 Louisville radar (KLVX), 80 km away, was scanning. The volume nearest the touchdown began at 22:42 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 2018 tornado in KentuckyEvery tornado in Kentucky since 1950Warnings in force in Kentucky nowThe forecast where you are

5 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.