Tornadoes · United States · Ohio · 2011

EF0 tornado, New Antioch, Ohio, June 27, 2011

This EF0 tornado ran 0.0 miles across Clinton County on June 27, 2011, touching down at 8:54 PM EDT and reaching 25 yards wide. It killed nobody.

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
June 27, 2011
Touchdown
8:54 PM EDT (00:54 UTC)
Lifted
8:55 PM EDT (00:55 UTC)
On the ground
1 minutes
Path length
0.0 miles (0.0 km)
Path width
25 yards (23 m)
Deaths
0
Injuries
0
County
Clinton County
Touchdown point
39.400, -83.760
Lift-off point
39.400, -83.760
Record number
1106271854-01

What the Weather Service recorded

A warm front lifting northward across the Ohio Valley combined with moderate low level shear during the afternoon and evening hours. This helped to produce scattered thunderstorms across south central Ohio. Some of these storms produced funnel clouds and tornadoes.

The tornado briefly touched down near Accomodation Road between State Route 73 and State Route 134. The tornado lifted up dirt in a field into the circulation. No damage was reported. The maximum wind speed was estimated at 65 miles per hour.

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

The warnings

3 minutes of warning. NWS ILN issued a tornado warning for this county at 00:51 UTC, 3 minutes before the tornado touched down, in force until 01:15 UTC.

Issued (UTC)ExpiredProductOffice
00:51 UTC01:15 UTCTornado WarningILN

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, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:55 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), 00:00Z

0.9 hours before the tornado, 5 km from the path. June 28, 2011.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2011-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1307 joules per kilogram, CIN -12, lifted condensation level 768 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Cncnati-Daytn, OH at 00:00Z on 2011-06-28The 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 190 square meters per square second, 0 to 6 km bulk shear 28 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
1307 J/kg
Mixed-layer CIN
-12 J/kg
Surface CAPE
1757 J/kg
Mixed-layer LCL
768 m above ground
0-6 km bulk shear
28 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
190 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.4
0-3 km lapse rate
6.4 K/km

Open this sounding in Storm Lab

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

11.1 hours after it, 5 km from the path. June 28, 2011.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2011-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 646 joules per kilogram, CIN -48, lifted condensation level 654 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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, Cncnati-Daytn, OH at 12:00Z on 2011-06-28The 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 -13 square meters per square second, 0 to 6 km bulk shear 32 knots.19395878Sfc1 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
646 J/kg
Mixed-layer CIN
-48 J/kg
Surface CAPE
598 J/kg
Mixed-layer LCL
654 m above ground
0-6 km bulk shear
32 kt
0-1 km bulk shear
13 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1
0-3 km lapse rate
4.6 K/km

Open this sounding in Storm Lab

The surface observations

Wilmington (ILN), 6 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
22:54 UTC8071170° 4 kt1011.5
23:54 UTC7871180° 6 kt1012.2
00:39 UTC75.273.4190° 5 kt1012.2RA BR
00:44 UTC75.273.4160° 6 kt1012.2-RA BR
00:54 UTC7573180° 8 kt1012.2-RA
01:54 UTC7472220° 7 kt1012.5

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

The radar

The Cincinnati radar (KILN), 6 km away, was scanning. The volume nearest the touchdown began at 00:50 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
23:50 UTCFUNNEL CLOUD2 E GeorgetownBrown, OHSTATE PATROL REPORTED SEEING A FUNNEL CLOUD THAT APPEARED TO BE BREAKING UP NEAR INTERSECTION OF SR 125 AND US 68.
23:54 UTCTSTM WND DMG2 E GeorgetownBrown, OHPOSSIBLE TORNADO. TREES AND WIRES DOWN NEAR US 68/SR 125 AND DAY HILL-ARNHEIM RD. TIME ESTIMATED FROM RADAR.
23:54 UTCTORNADO 12 E GeorgetownBrown, OHTREES AND WIRES DOWN NEAR US 68/SR 125 AND DAY HILL-ARNHEIM RD. 4 BARNS DAMAGED OR DESTROYED. TIME ESTIMATED FROM RADAR. CORRECTED REFERENCE CITY FROM GERTRUDE TO GEORGETOWN.
23:54 UTCTORNADO 12 E GertrudeBrown, OHTREES AND WIRES DOWN NEAR US 68/SR 125 AND DAY HILL-ARNHEIM RD. 4 BARNS DAMAGED OR DESTROYED. TIME ESTIMATED FROM RADAR.
00:30 UTCFUNNEL CLOUDLocust GroveAdams, OHROTATING FUNNEL CLOUD SPOTTED NEAR INTERSECTION OF SR 73 AND SR 41
00:43 UTCFUNNEL CLOUDPoplar GrovePike, OHOFFICER WITNESSED ROTATING FUNNEL CLOUD VERY LOW TO GROUND NEAR ADAMS/PIKE COUNTY LINE...BUT DID NOT SEE CIRCULATION AT THE GROUND.
00:52 UTCFUNNEL CLOUD2 Sse WilmingtonClinton, OHLARGE FUNNEL VISIBLE SOUTH OF NWS OFFICE...MOVING EAST. CORRECTED LOCATION.
00:52 UTCFUNNEL CLOUDWilmingtonClinton, OH
00:54 UTCTORNADO 05 Se WilmingtonClinton, OHSPOTTER WAS LOCATED AT AIRBORNE RD AND SR 73 LOOKING SOUTH. SAW BRIEF TOUCHDOWN IN FIELD WITH DIRT CIRCULATION. THE TOUCHDOWN WAS NEAR ACCOMODATION RD BETWEEN SR 73 AND SR 134.
00:54 UTCTORNADO5 Se WilmingtonClinton, OHSPOTTER WAS LOCATED AT AIRBORNE RD AND SR 73 LOOKING SOUTH. SAW BRIEF TOUCHDOWN IN FIELD WITH DIRT CIRCULATION.
01:10 UTCFUNNEL CLOUDBloomingburgFayette, OH
01:28 UTCFUNNEL CLOUDWilliamsportPickaway, OHCOUNTY 911 CENTER RECEIVED SEVERAL FUNNEL CLOUD REPORTS.
01:30 UTCFUNNEL CLOUDWilliamsportPickaway, OH

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

This ground now

The live radar over the trackEvery 2011 tornado in OhioEvery tornado in Ohio since 1950Warnings in force in Ohio nowThe forecast where you are

The other tornadoes of June 27, 2011

4 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
June 271:05 AM CDTEF1Monroe, MO0.440
June 271:09 AM CDTEF0Ralls, MO0.670
June 277:54 PM EDTEF1Brown, OH1.6100$90,000
June 278:53 PM EDTEF0Pike, OH1.550$3,000

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.