Several thunderstorms formed across northeast and east central Kansas on September 7, 2012.  Much of the damage was confined to areas of Lyon, Coffey, and Anderson Counties as a bow-echo thunderstorm formed across Lyon County and moved eastward bringing 60+ mph winds and causing damage to trees, power lines, and outbuildings.  Aside from the strong wind these storms produced some 1 inch hail.

Hail in COFFEY, KANSAS
From 07-SEP-12 13:04:00 to 07-SEP-12 13:07:00 (CST-6)
Location: BURLINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ANDERSON, KANSAS
From 07-SEP-12 13:25:00 to 07-SEP-12 13:28:00 (CST-6)
Location: COLONY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LYON, KANSAS
From 07-SEP-12 12:34:00 to 07-SEP-12 12:38:00 (CST-6)
Location: LANG
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

A public photo on WIBW Facebook indicated a large diameter tree, around 12 inches, broke as a result of strong winds from a severe thunderstorm.

Thunderstorm Wind in COFFEY, KANSAS
From 07-SEP-12 13:00:00 to 07-SEP-12 13:03:00 (CST-6)
Location: BURLINGTON
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

A 6 inch diameter tree branch fell as a result of thunderstorm winds in Burlington.

Thunderstorm Wind in COFFEY, KANSAS
From 07-SEP-12 13:04:00 to 07-SEP-12 13:07:00 (CST-6)
Location: SHARPE
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: COOP Observer

A COOP Observer reported 3 inch tree limbs down as a result of strong winds.

Thunderstorm Wind in COFFEY, KANSAS
From 07-SEP-12 13:10:00 to 07-SEP-12 13:13:00 (CST-6)
Location: LE ROY
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Power lines were down and building damage was reported from Le Roy, Kansas.

Thunderstorm Wind in LYON, KANSAS
From 07-SEP-12 12:36:00 to 07-SEP-12 12:39:00 (CST-6)
Location: (EMP)EMPORIA MUNI AR
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS station at the Emporia Airport recorded a 63 mph wind gust associated with a strong thunderstorm that moved through that area.

Thunderstorm Wind in COFFEY, KANSAS
From 07-SEP-12 13:00:00 to 07-SEP-12 13:03:00 (CST-6)
Location: BURLINGTON
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Trained Spotter

Lawn furniture was blown off the deck and small tree limbs were broken.

Thunderstorm Wind in LYON, KANSAS
From 07-SEP-12 12:37:00 to 07-SEP-12 12:40:00 (CST-6)
Location: EMPORIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A driver on Interstate 35 reported 60 mph wind gusts near Emporia.

Thunderstorm Wind in ANDERSON, KANSAS
From 07-SEP-12 13:25:00 to 07-SEP-12 13:28:00 (CST-6)
Location: COLONY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tree limbs were down near the intersection of 100 and Delaware.

Thunderstorm Wind in LYON, KANSAS
From 07-SEP-12 12:34:00 to 07-SEP-12 12:37:00 (CST-6)
Location: EMPORIA
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Broadcast Media

A large diameter tree, around four feet in diameter, was downed in Emporia as a result of strong thunderstorm winds.

Thunderstorm Wind in LYON, KANSAS
From 07-SEP-12 12:34:00 to 07-SEP-12 12:37:00 (CST-6)
Location: EMPORIA
Magnitude: 56.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Public

An 8 inch tree limb broke near 12th Street and Chestnut in Emporia, Kansas.

Thunderstorm Wind in ANDERSON, KANSAS
From 07-SEP-12 13:25:00 to 07-SEP-12 13:28:00 (CST-6)
Location: COLONY
Magnitude: 56.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Near Colony 2 small out buildings were damaged and a few trees were down near the Intersection of 200 and Delaware.

Thunderstorm Wind in COFFEY, KANSAS
From 07-SEP-12 12:59:00 to 07-SEP-12 13:02:00 (CST-6)
Location: BURLINGTON
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Public

Numerous small tree limbs were broken as a result of strong thunderstorm wind gusts.