EF1 tornado, West Andover to Andover, Ohio, June 6, 2010

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

June 6, 2010

Touchdown

6:01 AM EDT (10:01 UTC)

Lifted

6:06 AM EDT (10:06 UTC)

On the ground

5 minutes

Path length

4.5 miles (7.2 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

Property damage

$500,000

County

Ashtabula County

Touchdown point

41.591, -80.631

Lift-off point

41.609, -80.547

Record number

1006060401-01

A stationary frontal system stretched across the lower Great Lakes on the morning of Saturday, June 5th. This resulted in a very warm and humid airmass over northern Ohio. Outflow boundaries from earlier storms interacted with the stationary front to initiate thunderstorm development during the afternoon hours across inland northern Ohio. One of the stronger thunderstorms produced tornadoes in Richland and Holmes Counties. There were also a few reports of straight line thunderstorm wind damage. A rapidly deepening area of low pressure moved quickly east across southern lower Michigan during the evening hours. This low eventually moved across Lake Erie during the early morning hours of the 6th. Showers and thunderstorms developed across northern Indiana during the evening hours. These storms intensified and moved east along the stationary front and into Northwest Ohio. A devastating EF4 tornado developed over Wood County a little before midnight. This tornado moved into Ottawa County before dissipating. Seven people were killed and dozens of homes destroyed by the tornado. A weaker tornado also moved across portions of Lucas County. A third round of storms developed during the early morning hours of the 6th ahead of a cold front trailing the low. These storms moved across northern Ohio and produced pockets of damage. An EF1 tornado occurred in Ashtabula County around daybreak. A total of five tornadoes occurred in northern Ohio on June 5th and 6th. These tornadoes killed seven people, injured dozens and destroyed or damaged over a 100 homes. A school and a public administration building were also leveled. Damage estimates easily topped $100 million.

An EF1 tornado touched down in eastern Ashtabula County. The initial touchdown occurred southwest of Andover near the intersection of Mann and Creek Roads. The tornado then traveled east northeast for approximately four and a half miles before lifting near the intersection of Pymatuning Lake Road and State Route 85. The tornado moved across the south side of Andover and then crossed Main Street just east of town. Significant tree damage was observed southwest of Andover. A barn in the area was heavily damaged. A warehouse on the southeast side of Andover was damaged and many trees in the area toppled. Several homes in the town sustained damage, mainly from lost roofing or siding. Many cars were also damaged from flying debris or downed limbs. Dozens of downed trees were also reported along the remainder of the damage path. Several boats were tossed into Pymatuning Reservoir just as the tornado lifted. The tornado may not have been in continuous contact with the ground the entire length of the damage path. The damage path was no more than 100 yards in width.

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

37 minutes of warning. NWS CLE issued a tornado warning for this county at 09:24 UTC, 37 minutes before the tornado touched down, in force until 10:30 UTC.

The county was under a tornado watch, issued at 06:06 UTC and running to 13:00 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 General Thunderstorms Risk. The outlook in force was issued at 06:04 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.

Ashtabula (HZY), 22 km from the path, in the two hours either side.

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

The Cleveland radar (KCLE), 108 km away, was scanning. The volume nearest the touchdown began at 10:01 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 2010 tornado in OhioEvery tornado in Ohio since 1950Warnings in force in Ohio nowThe forecast where you are

8 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.