After 9pm CDT a squall line developed across north central Kansas and evolved into a bow echo.  Widespread 60 to 80 mph winds with pockets of 80-100 mph winds occurred across a large part of Ottawa, Cloud, Clay, Geary, Washington and Riley counties between 10pm and 12 am Saturday night.  At least 2 small tornadoes were confirmed that evening however most of the damage was due to straight line winds that in some cases were measured in excess of 100 mph.

Thunderstorm Wind in POTTAWATOMIE, KANSAS
From 18-MAY-13 22:00:00 to 18-MAY-13 22:02:00 (CST-6)
Location: SWAMP ANGEL
Magnitude: 52.00 EG
Reported by: Trained Spotter

Winds estimated.

Thunderstorm Wind in RILEY, KANSAS
From 18-MAY-13 21:50:00 to 18-MAY-13 21:52:00 (CST-6)
Location: LEONARDVILLE
Magnitude: 52.00 EG
Reported by: Trained Spotter

Pea size hail.

Thunderstorm Wind in GEARY, KANSAS
From 18-MAY-13 21:51:00 to 18-MAY-13 21:53:00 (CST-6)
Location: (FRI)MARSHALL AAF FT
Magnitude: 57.00 MG
Reported by: ASOS

Power out at Fort Riley. Large trees down in Junction City.

Thunderstorm Wind in WASHINGTON, KANSAS
From 18-MAY-13 21:57:00 to 18-MAY-13 21:59:00 (CST-6)
Location: GREENLEAF
Magnitude: 61.00 EG
Reported by: Trained Spotter

Penny size hail.

Tornado in CLAY, KANSAS
From 18-MAY-13 21:35:00 to 18-MAY-13 21:42:00 (CST-6)
Location: MORGANVILLE
Tornado F-scale: EF1
Reported by: NWS Storm Survey

Small tornado skipped northeast and produced EF1 damage at a home along Parallel road on the Clay and Washington county border.  Outbuildings were destroyed and grain bins were blown away. Ponderosa pines were sheared off near the stump in a narrow path to the northeast.

Tornado in WASHINGTON, KANSAS
From 18-MAY-13 21:42:00 to 18-MAY-13 21:45:00 (CST-6)
Location: VINING
Tornado F-scale: EF1
Reported by: NWS Storm Survey

The small tornado moved northeast of Parallel Road out of Clay County and dissipated after approximately 1 mile producing minor EF0 damage to trees.

Tornado in WASHINGTON, KANSAS
From 18-MAY-13 22:00:00 to 18-MAY-13 22:02:00 (CST-6)
Location: WASHINGTON
Tornado F-scale: EF0
Reported by: NWS Storm Survey

Very small brief tornado did minor damage to buildings in southwest portions of Washington.  Tornado was only 50 yards wide and had winds of around 80 mph which would have been similar to surrounding 60 to 80 mph winds within the bow echo.

Thunderstorm Wind in SHAWNEE, KANSAS
From 18-MAY-13 22:54:00 to 18-MAY-13 22:56:00 (CST-6)
Location: (TOP)BILLARD ARPT TO
Magnitude: 52.00 EG
Reported by: Law Enforcement

Power line down at 2000 block of se Iowa ave.

Thunderstorm Wind in SHAWNEE, KANSAS
From 18-MAY-13 22:55:00 to 18-MAY-13 22:56:00 (CST-6)
Location: (TOP)BILLARD ARPT TO
Magnitude: 52.00 EG
Reported by: Emergency Manager

Tree limbs down around 6 inch diameter.

Thunderstorm Wind in SHAWNEE, KANSAS
From 18-MAY-13 22:55:00 to 18-MAY-13 22:56:00 (CST-6)
Location: TOPEKA
Magnitude: 52.00 EG
Reported by: Emergency Manager

Tree branches and power line down at 17th and Washburn.

Thunderstorm Wind in OTTAWA, KANSAS
From 18-MAY-13 20:50:00 to 18-MAY-13 20:52:00 (CST-6)
Location: MINNEAPOLIS
Magnitude: 70.00 EG
Reported by: Emergency Manager

Wind gusts estimated around 80 mph. Several trees uprooted and damage to roofs. Tree branches down in the town of Minneapolis and Lidsney.

Hail in OTTAWA, KANSAS
From 18-MAY-13 20:50:00 to 18-MAY-13 20:52:00 (CST-6)
Location: DELPHOS
Magnitude: 1.75 
Reported by: Law Enforcement

Hail in CLOUD, KANSAS
From 18-MAY-13 21:02:00 to 18-MAY-13 21:03:00 (CST-6)
Location: GLASCO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, KANSAS
From 18-MAY-13 21:40:00 to 18-MAY-13 21:42:00 (CST-6)
Location: PALMER
Magnitude: 52.00 EG
Reported by: 911 Call Center

Tree branches down.

Thunderstorm Wind in CLOUD, KANSAS
From 18-MAY-13 21:10:00 to 18-MAY-13 21:12:00 (CST-6)
Location: MILTONVALE
Magnitude: 52.00 EG
Reported by: Trained Spotter

Roof blown off house and tree blown into house.

Thunderstorm Wind in CLOUD, KANSAS
From 18-MAY-13 21:20:00 to 18-MAY-13 21:23:00 (CST-6)
Location: MILTONVALE
Magnitude: 61.00 EG
Reported by: Trained Spotter

Tree limbs down and pea size hail.

Thunderstorm Wind in MARSHALL, KANSAS
From 18-MAY-13 22:03:00 to 18-MAY-13 22:05:00 (CST-6)
Location: WATERVILLE
Magnitude: 52.00 EG
Reported by: Emergency Manager

Three trailers flipped over and 6 inch tree limb through the side of a house.

Thunderstorm Wind in MARSHALL, KANSAS
From 18-MAY-13 22:03:00 to 18-MAY-13 22:05:00 (CST-6)
Location: SCHROYER
Magnitude: 52.00 EG
Reported by: Emergency Manager

A large barn and numerous outbuildings destroyed.

Thunderstorm Wind in MARSHALL, KANSAS
From 18-MAY-13 22:07:00 to 18-MAY-13 22:09:00 (CST-6)
Location: BREMEN
Magnitude: 52.00 EG
Reported by: Trained Spotter

Reports of power lines down.

Thunderstorm Wind in MARSHALL, KANSAS
From 18-MAY-13 22:15:00 to 18-MAY-13 22:17:00 (CST-6)
Location: SCHROYER
Magnitude: 52.00 EG
Reported by: Trained Spotter

Tree limbs down.

Thunderstorm Wind in POTTAWATOMIE, KANSAS
From 18-MAY-13 22:44:00 to 18-MAY-13 22:46:00 (CST-6)
Location: EMMETT
Magnitude: 61.00 EG
Reported by: Public

Winds estimated.

Thunderstorm Wind in SHAWNEE, KANSAS
From 18-MAY-13 22:45:00 to 18-MAY-13 22:47:00 (CST-6)
Location: KIRO
Magnitude: 52.00 EG
Reported by: Law Enforcement

A large tree limb down at 7200 block of sw 10th st.

Thunderstorm Wind in GEARY, KANSAS
From 18-MAY-13 21:30:00 to 18-MAY-13 21:33:00 (CST-6)
Location: MILFORD
Magnitude: 78.00 EG
Reported by: Emergency Manager

One camper flipped over with 2 minor injuries and another camper flipped. Most of the area without power.

Thunderstorm Wind in GEARY, KANSAS
From 18-MAY-13 21:35:00 to 18-MAY-13 21:37:00 (CST-6)
Location: JUNCTION CITY
Magnitude: 52.00 EG
Reported by: Emergency Manager

Power lines down in Junction City.

Thunderstorm Wind in GEARY, KANSAS
From 18-MAY-13 21:35:00 to 18-MAY-13 21:37:00 (CST-6)
Location: JUNCTION CITY
Magnitude: 52.00 EG
Reported by: Trained Spotter

Estimated 60 mph wind gusts.

Thunderstorm Wind in POTTAWATOMIE, KANSAS
From 18-MAY-13 22:22:00 to 18-MAY-13 22:24:00 (CST-6)
Location: EMMETT
Magnitude: 52.00 EG
Reported by: 911 Call Center

Trees down in the road.

Hail in CLOUD, KANSAS
From 18-MAY-13 21:42:00 to 18-MAY-13 21:43:00 (CST-6)
Location: CLYDE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in RILEY, KANSAS
From 18-MAY-13 21:43:00 to 18-MAY-13 21:45:00 (CST-6)
Location: RILEY
Magnitude: 52.00 EG
Reported by: Emergency Manager

Power out in Riley.

Thunderstorm Wind in NEMAHA, KANSAS
From 18-MAY-13 22:30:00 to 18-MAY-13 22:32:00 (CST-6)
Location: CORNING
Magnitude: 52.00 EG
Reported by: Trained Spotter

Winds estimated.

Thunderstorm Wind in MARSHALL, KANSAS
From 18-MAY-13 22:31:00 to 18-MAY-13 22:33:00 (CST-6)
Location: VERMILLION
Magnitude: 52.00 EG
Reported by: Trained Spotter

Winds estimated.

Thunderstorm Wind in JACKSON, KANSAS
From 18-MAY-13 22:45:00 to 18-MAY-13 22:47:00 (CST-6)
Location: HOYT
Magnitude: 52.00 EG
Reported by: State Official

Tree branches down in town.

Thunderstorm Wind in GEARY, KANSAS
From 18-MAY-13 21:40:00 to 18-MAY-13 21:42:00 (CST-6)
Location: BRANT
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trailer home slid off the foundation near Lilly and Lyons Creek rd. Time estimated from radar.

Thunderstorm Wind in RILEY, KANSAS
From 18-MAY-13 21:59:00 to 18-MAY-13 22:02:00 (CST-6)
Location: MANHATTAN
Magnitude: 52.00 EG
Reported by: Emergency Manager

Reports of damage to building in industrial park on west side of town.

Thunderstorm Wind in CLAY, KANSAS
From 18-MAY-13 21:48:00 to 18-MAY-13 21:50:00 (CST-6)
Location: MORGANVILLE
Magnitude: 52.00 EG
Reported by: Law Enforcement

A machine shed destroyed.