Tornadoes · United States · Ohio · 2020

EF0 tornado, Anderson to Andersonville, Ohio, June 10, 2020

Name: EF0 tornado, Anderson to Andersonville, Ohio, June 10, 2020
Start: 2020-06-10T22:18:00.000Z
End: 2020-06-10T22:24:00.000Z
Location: Anderson to Andersonville, Ohio

From Anderson to Andersonville, this EF0 tornado ran 5.9 miles across Ross County on June 10, 2020, touching down at 6:18 PM EDT and reaching 300 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.

EF065 to 85 mphthis tornado
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mph
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
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.
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.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
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.
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: June 10, 2020
Touchdown: 6:18 PM EDT (22:18 UTC)
Lifted: 6:24 PM EDT (22:24 UTC)
On the ground: 6 minutes
Path length: 5.9 miles (9.5 km)
Path width: 300 yards (274 m)
Deaths: 0
Injuries: 0
Property damage: $50,000
County: Ross County
Touchdown point: 39.379, -83.079
Lift-off point: 39.437, -83.000
Record number: 2006101618-01

What the Weather Service recorded

An unseasonably deep upper-level system ejected east into the Ohio Valley interacting with a very warm and tropically moist air mass that had settled into the region.

The tornado initially touched down on the south side of County Road 550 (Pleasant Valley Rd) where several barns were heavily damaged with roofing material thrown across the road and into adjacent properties about 1/4 mile downstream. From there, a consistent swath of enhanced tree damage was found along a nearly six mile continuous path across U.S. 35, County Road 125 (Union Lane), Egypt Pike, OH-207, and OH-104. A home and some outbuildings were damaged as the tornado crossed OH-207. With the enhanced swath of damage not found on the east side of the Scioto River, it is expected that the tornado lifted somewhere in the Scioto River flood plain.

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. One was issued for the county at another hour that day.

The county was under a severe thunderstorm watch, issued at 18:48 UTC and running to 00:37 UTC.

Issued (UTC)	Expired	Product	Office
18:48 UTC	00:37 UTC	Severe Thunderstorm Watch	ILN
21:58 UTC	22:45 UTC	Severe Thunderstorm Warning	ILN
22:23 UTC	22:45 UTC	Tornado Warning	ILN
22:35 UTC	23:30 UTC	Severe Thunderstorm Warning	ILN

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 Enhanced Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 16:28 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.

Cncnati-Daytn, OH (KILN), 12:00Z

10.3 hours before the tornado, 65 km from the path. June 10, 2020.

Skew-T log-p

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.

Hodograph

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: 346 J/kg
Mixed-layer CIN: -192 J/kg
Surface CAPE: 735 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 15 kt
0-1 km bulk shear: 33 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 4.3 K/km

Open this sounding in Storm Lab

Cncnati-Daytn, OH (KILN), 00:00Z

1.7 hours after it, 65 km from the path. June 11, 2020.

Skew-T log-p

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.

Hodograph

Mixed-layer CAPE: 28 J/kg
Mixed-layer CIN: -81 J/kg
Surface CAPE: 1013 J/kg
Mixed-layer LCL: 1708 m above ground
0-6 km bulk shear: 41 kt
0-1 km bulk shear: 27 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3
0-3 km lapse rate: 5.6 K/km

Open this sounding in Storm Lab

The radar

The Cincinnati radar (KILN), 67 km away, was scanning. The volume nearest the touchdown began at 22:16 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)	Report	Where	County	Remark
21:07 UTC	TSTM WND DMG	3 E Wilmington	Clinton, OH	TREE DOWNED ALONG STATE RTE 73 JUST EAST OF WILMINGTON AIR PARK. TIME ESTIMATED BY RADAR.
21:25 UTC	TSTM WND DMG	4 Nw Jeffersonville	Fayette, OH	NUMEROUS LARGE TREES DOWN ALONG SR 41.
21:42 UTC	TSTM WND DMG	1 Nne Hillsboro	Highland, OH	ABOUT 10 LARGE TREES DOWNED AT HILLSBORO CEMETERY. TIME ESTIMATED BY RADAR.
21:42 UTC	TSTM WND DMG	5 Ssw Hillsboro	Highland, OH	SIDING REMOVED FROM A HOME, ROOF DAMAGE ALONG MILLER LANE. SEVERAL LARGE TREES SNAPPED. TIME ESTIMATED BY RADAR.
21:42 UTC	TSTM WND DMG	Hillsboro	Highland, OH	NUMEROUS TREES DOWNED ACROSS TOWN.
21:45 UTC	TSTM WND DMG	5 Nw Rainsboro	Highland, OH	NUMEROUS TREES DOWNED ALONG US 50. TIME ESTIMATED BY RADAR.
21:46 UTC	TSTM WND DMG	4 Se New Vienna	Highland, OH	LARGE 14-16 INCH TREE DOWNED.
21:49 UTC	TSTM WND DMG	1 Se Hillsboro	Highland, OH	SEVERAL LARGE TREES DOWNED ALONG SR 124. TIME ESTIMATED BY RADAR.
21:52 UTC	TSTM WND DMG	Samantha	Highland, OH	LARGE LIMBS DOWNED.
21:53 UTC	TSTM WND DMG	3 Ene New Vienna	Highland, OH	LARGE TREE DOWN ON 28 AND CAREYTOWN ROAD. TIME ESTIMATED FROM RADAR.
21:53 UTC	TSTM WND DMG	Samantha	Highland, OH	SEVERAL LARGE TREE LIMBS DOWNED. TIME ESTIMATED BY RADAR.
21:54 UTC	TSTM WND DMG	Highland	Highland, OH	TREES AND LARGE BRANCHES DOWN.
21:55 UTC	TSTM WND GST 61	Khoc Hillsboro Apt	Highland, OH
21:56 UTC	TSTM WND DMG	N Leesburg	Highland, OH	NUMEROUS TREES DOWN IN DIFFERENT DIRECTIONS.
22:01 UTC	TSTM WND GST 60	Greenfield	Highland, OH	WIND GUST OF 60 TO 65 MPH.
22:03 UTC	TSTM WND DMG	4 Ssw Pike Lake	Pike, OH	LARGE TREE DOWN IN LATHAM. TIME ESTIMATED FROM RADAR.
22:10 UTC	TSTM WND DMG	1 Nne Georgesville	Franklin, OH	SEVERAL TREES DOWN IN DARBY CREEK METRO PARK. TIME ESTIMATED FROM RADAR.
22:10 UTC	TSTM WND DMG	1 Sse Georgesville	Franklin, OH	SEVERAL TREES DOWN IN DARBY CREEK METRO PARK. TIME ESTIMATED FROM RADAR.
22:10 UTC	TSTM WND DMG	3 Nnw Bourneville	Ross, OH	NUMEROUS BRANCHES AND WIRES DOWN. TIME ESTIMATED FROM RADAR.
22:15 UTC	TSTM WND GST 52	Ki23 Washington Ch Apt	Fayette, OH
22:17 UTC	TSTM WND DMG	3 Nw Frankfort	Ross, OH	TREES AND LARGE BRANCHES DOWNED IN AUSTIN
22:18 UTC	TORNADO 0	6 Wnw Chillicothe	Ross, OH	NWS STORM SURVEY CONFIRMS AN EF0 TORNADO WITH MAXIMUM WIND SPEEDS OF 75 MPH AFFTECTING TREES AND OUTBUILDINGS.
22:20 UTC	TSTM WND DMG	6 Nw Chillicothe	Ross, OH	TOPS OF TREES SNAPPED, OUTDOOR FURNITURE BLOWN HUNDREDS OF FEET. 72 MPH WIND GUST RECORDED ON PERSONAL WEATHER STATION. REPORT OF MORE DAMAGE AT 102 CATTAIL ROAD ON OTHER SIDE OF US-35.
22:22 UTC	TSTM WND DMG	4 N Chillicothe	Ross, OH	NUMEROUS TREES DOWN NEAR BROOKSIDE CHURCH. TIME ESTIMATED FROM RADAR.
22:26 UTC	TSTM WND DMG	3 Sw Kingston	Ross, OH	BARN DAMAGED. TIME ESTIMATED FROM RADAR.
22:26 UTC	TSTM WND DMG	4 N Chillicothe	Ross, OH	LARGE TREES DOWNED NORTH OF CHILLICOTHE. TIME ESTIMATED BY RADAR.
22:38 UTC	TSTM WND DMG	3 Sw Elm Grove	Pike, OH	NUMEROUS TREES DOWN ALONG 772. TIME ESTIMATED FROM RADAR.
22:38 UTC	TSTM WND DMG	Rarden	Scioto, OH	TREES DOWNED ONTO A HOME ALONG HAZELMAKER ROAD. TIME ESTIMATED BY RADAR.
22:42 UTC	TSTM WND DMG	2 Nnw Tarlton	Fairfield, OH	SEVERAL LARGE TREES DOWNED IN THE 10000 BLOCK OF 16TH ROAD NEAR STOUTSVILLE. VEHICLE HIT BY ONE OF THE LARGE TREES DOWNED ON THE PROPERTY. TIME ESTIMATED BY RADAR.
22:44 UTC	TSTM WND DMG	E Otway	Scioto, OH	TREE BLOCKING SR 73. TIME ESTIMATED BY RADAR.
22:45 UTC	TSTM WND DMG	Commercial Point	Pickaway, OH	SOME TREES DOWN NEAR ROUTE 762. TIME ESTIMATED FROM RADAR.
22:53 UTC	TSTM WND DMG	Obetz	Franklin, OH	LARGE TREE UPROOTED. TIME ESTIMATED FROM RADAR.
22:58 UTC	TSTM WND DMG	N Lancaster	Fairfield, OH	TREE DOWN CAUSING POWER OUTAGES IN LANCASTER.
23:10 UTC	TSTM WND DMG	Jackson	Jackson, OH	SMALL BRANCHES DOWN. POWER POLE DOWN. HEAVY RAIN AND FREQUENT LIGHTNING.
23:20 UTC	TSTM WND DMG	Mcarthur	Vinton, OH	NUMEROUS TREES AND POWER LINES DOWN ACROSS THE WHOLE COUNTY.
23:30 UTC	TSTM WND DMG	Jackson	Jackson, OH	SEVERAL TREES DOWN ACROSS THE CITY OF JACKSON OH.
23:37 UTC	TSTM WND DMG	Logan	Hocking, OH	NUMEROUS TREES AND POWERLINES DOWN. TIME ESTIMATED FROM RADAR.
00:22 UTC	TSTM WND DMG	Jackson	Jackson, OH	SEVERAL TREES DOWN ACROSS THE CITY OF JACKSON OH.

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

This ground now

The live radar over the track Every 2020 tornado in Ohio Every tornado in Ohio since 1950 Warnings in force in Ohio now The forecast where you are

The other tornadoes of June 10, 2020

4 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Damage
June 10	8:29 PM EDT	EF0	Laurens, SC	0.4	30	$10,000
June 10	9:11 PM EDT	EF0	Columbiana, OH	2.4	150	$50,000
June 10	9:24 PM EDT	EF0	Columbiana, OH	0.8	75	$20,000
June 10	9:31 PM EDT	EF1	Beaver, PA	9.6	790

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.