EF0 tornado, Brandon, Ohio, June 5, 2024

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

June 5, 2024

Touchdown

8:43 PM EDT (00:43 UTC)

Lifted

8:56 PM EDT (00:56 UTC)

On the ground

13 minutes

Path length

3.3 miles (5.2 km)

Path width

80 yards (73 m)

Deaths

0

Injuries

0

Property damage

$30,000

County

Knox County

Touchdown point

40.304, -82.571

Lift-off point

40.313, -82.510

Record number

2406051843-01

13 damage points were recorded along this path by NWS CLE and NWS ILN, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF0. The highest wind the damage implies is 85 mph.

• Video confirmed tornado on the ground at this location.
• EMA confirms minor tree damage here.
• Two wooden power poles snapped, not in great condition
• Some trees topped, roof of building lofted into trees

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

Knox County resided in the warm and moist sector during the early through late evening of the 5th as a cold front swept eastward from northwestern IN and the Lower Ohio Valley to far-western OH and far-southeastern IN. Ahead of the cold front, scattered thunderstorms, including supercells, developed along a surface trough axis and resided in an environment favorable for tornadic supercells. This environment was comprised of moderate MUCAPE and effective bulk shear, respectively, and favorably-low mixed layer lifting condensation levels near 750 meters AGL. An approaching mesoscale convective vortex from southwest OH backed surface winds over and near Knox County, which lead to to significant veering and strengthening of low-level winds with height and surface-based effective storm-relative helicity of about 150 meters squared per second squared. One supercell in particular tracked generally eastward and then northeastward across southern and eastern portions of Knox County. This storm produced one tornado and one instance of straight-line wind damage. Heavy rainfall rates from the storms throughout the evening produced localized flash flooding in portions of Know, Morrow, and Crawford Counties.

An EF0 tornado with estimated peak winds of 80 mph formed near County Road 26, south of Sycamore Road in Knox County, where it damaged a large outbuilding and tree limbs. The tornado tracked east-northeastward, caused sporadic tree damage, and removed shingles and siding from residences along Garber Road before crossing Possum Street. Beyond Possum Street, the tornado continued to move east-northeastward, caused minor roof and siding damage to two residences, and an outbuilding sustained garage door damage. The same outbuilding had a portion of its roof torn-off and displaced roughly 100 yards into nearby trees to the east. As the tornado continued to move east-northeastward, it caused additional, sporadic tree damage south of Sycamore Road before the tornado ended near the intersection of Sycamore and Granville Roads in Brandon.

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

14 minutes of warning. NWS CLE issued a tornado warning for this county at 00:29 UTC, 14 minutes before the tornado touched down, in force until 01:15 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 Marginal 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 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.

Mount Vernon (4I3), 3 km from the path, in the two hours either side.

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

The Cleveland radar (KCLE), 135 km away, was scanning. The volume nearest the touchdown began at 00:44 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 2024 tornado in OhioEvery tornado in Ohio since 1950Warnings in force in Ohio nowThe forecast where you are

23 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.