Influenced by a highly unstable, but strongly capped atmosphere ahead of a frontal boundary moving out of Illinois, the combination of 3000 to 4000 j/kg surface based CAPE, mid-level lapse rates between 8 and 9 C/km and 0-6 km deep layer shear of 35 to 55 knots set the stage for rapid supercellular development. The convection transitioned to clusters of bowing segments as storms congealed producing an increased risk for high end damaging wind. Broad, but strong rotation established quickly in the initial storms, allowing for rapid production of hail, some exceeding gold ball size. Numerous funnel clouds were reported in the early stages of the event, indicating conditions were favorable for tornadic development. However, the development of tornadoes was severely limited due to just enough mixed layer inhibition in the lowest levels.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 23:05:00 to 12-JUN-13 23:06:00 (EST-5)
Location: MC CLURE ARPT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A barn was destroyed at this location, however several of the timbers were rotten. There was damage to trees on the property as well. The damage was likely the results of a circulation that had touched down just to the southwest of this location.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 23:02:00 to 12-JUN-13 23:03:00 (EST-5)
Location: GRELTON
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several power poles were observed broken or pushed down along County Road 7, north of County Road J.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 22:59:00 to 12-JUN-13 23:00:00 (EST-5)
Location: HAMLER
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Widespread tree and tree limb damage was noted in and around the town of Hamler by NWS officials while conducting surveys of tornado damage in the area. All damage within the town of Hamler was the result of straight line winds.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 23:04:00 to 12-JUN-13 23:05:00 (EST-5)
Location: WESTHOPE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported trees were blown down on County Road 3, between County Roads G and H.

Tornado in HENRY, OHIO
From 12-JUN-13 23:03:00 to 12-JUN-13 23:04:00 (EST-5)
Location: GRELTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm survey of damage indicated that two weak and brief tornado  occurred within a quarter mile of each other. One of these touchdowns caused the collapse of barn doors as well as one of the walls to be blown out. Corn in an adjacent field indicated a brief convergent pattern. The maximum width was 15 yards with a maximum wind speed of 70 mph.

Tornado in VAN WERT, OHIO
From 12-JUN-13 22:27:00 to 12-JUN-13 22:30:00 (EST-5)
Location: WILLSHIRE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A circulation touched down on the west side of Willshire, along State Road 81 near the Indiana/Ohio State Line.  The tornado traveled southeast down Green Street to the intersection of Green Street and State Route 49.  An eyewitness observed the funnel make contact with the ground in his yard, snap off two large trees and continue down the street.  The survey revealed additional tree damage along the path.  Another eyewitness observed condensation vortices being injected into the funnel as his garage was rolled off its foundation.  A portion of a house roof was removed and thrown over a neighbor���s home.  A total of 13 homes suffered varying degrees of damage.  The circulation was on the ground less than 3 minutes with a maximum width of 80 yards and maximum wind speeds around 85 mph.  The same storm continued into Mercer County and later produced another weak tornado.

Tornado in HENRY, OHIO
From 12-JUN-13 22:55:00 to 12-JUN-13 22:56:00 (EST-5)
Location: NEW BAVARIA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Eyewitness reports and a National Weather Service Damage survey indicate a circulation quickly formed and touched down on the leading edge of a larger area of downburst winds along County Road Y, west of County Road 12A.  The tornado caused some minor roof damage to a residence and snapped or uprooted several trees in the immediate area (DI: TH DOD: 3); some debarking of tree tops was observed.  Wet ground likely aided uprooting of trees.  Shortly after touchdown, the tornado became outflow dominant and quickly dissipated with debris being carried by straight line winds to the east.  Maximum path length was 50 yards with a maximum width of 25 yards.  Wind speeds were estimated at around 85 mph.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 22:59:00 to 12-JUN-13 23:00:00 (EST-5)
Location: HAMLER
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey of damage at a farm indicated a combination of the remnant circulation of a tornado to the southwest of the site, as well as an anchoring failure, resulted in the collapse of a grain leg collapse and damage to several empty grain bins.  The grain leg was anchored by a three point system, with the northeast side of the leg being unanchored.  As the strong winds impacted an anchor on the southwest side, the leg began to buckle and shift, causing the bending of a large I-beam and the uplift of a cement block where an anchor was set to the northwest of the leg.  The grain leg twisted and collapsed onto several bins.  Given the failure of the anchoring, winds are estimated at around 80 mph.

Tornado in HENRY, OHIO
From 12-JUN-13 23:02:00 to 12-JUN-13 23:03:00 (EST-5)
Location: MALINTA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm survey indicated that a circulation rapidly touched down at a residence on the south side of County Road J.   A detached garage suffered extensive damage, as well as an adjacent barn suffering total loss of its roof (DI: SBO, DOD: 4).  The tornado continued northeast with debris from the residence impacting a two story home, causing the destruction of a porch, as well as a large hole punched into the west side of the upper story of the house (DI: FR12, DOD: 4).  A large pine tree had the top half snapped off and then thrown roughly 50 feet to rest against other trees on the property.  The tornado continued across a field into a small grove of trees, where the tornado likely became outflow dominant and dissipated.  While damage to the second residence could indicate much stronger wind speeds, a maximum wind speed of 95 mph was estimated due to the impacts of larger debris from the point of touchdown.  The maximum width of the tornado was around 75 yards.

Tornado in HENRY, OHIO
From 12-JUN-13 23:03:00 to 12-JUN-13 23:04:00 (EST-5)
Location: MC CLURE ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm survey of damage indicated that two weak and brief tornado occurred, separated by a quarter mile. A convergent, variable track pattern was noted in a wheat field. While the wheat was laid down, actual damage was minimal. The maximum width was 15 yards, with maximum winds of 70 mph.

Thunderstorm Wind in PUTNAM, OHIO
From 12-JUN-13 22:49:00 to 12-JUN-13 22:50:00 (EST-5)
Location: CONTINENTAL
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported structural damage around Continental.

Thunderstorm Wind in PUTNAM, OHIO
From 12-JUN-13 23:00:00 to 12-JUN-13 23:01:00 (EST-5)
Location: NORTH CREEK
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement officials reported numerous trees and power lines down from North Creek to Leipsic. A mobile home was overturned on the south side of North Creek, with one person suffering minor injuries.

Tornado in HENRY, OHIO
From 12-JUN-13 22:59:00 to 12-JUN-13 23:01:00 (EST-5)
Location: HAMLER
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS survey of damage north of Hamler indicated a circulation quickly intensified and touched down onto a barn, destroying it and throwing the debris to the northeast for nearly a half mile (DI: SBO DI: 6). Several large trees in the immediate area were snapped. An adjacent soybean field indicated a convergent wind pattern which continued towards a small grove of trees where the tornado dissipated. The maximum width was 50 yards with maximum wind speeds estimated at 95 mph.

Thunderstorm Wind in HENRY, OHIO
From 12-JUN-13 23:05:00 to 12-JUN-13 23:06:00 (EST-5)
Location: NAPOLEON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated a 70 mph wind gust at the intersection of County Road M and State Route 108.