Severe thunderstorms developed over portions of South Central Kansas during the afternoon of May 12th, 2010. The supercell thunderstorms developed and thrived in a very unstable airmass across South Central Kansas, just ahead of a southward moving cold front as it moved along the Kansas Turnpike.  The supercell thunderstorms produced a variety of severe weather, from large hail, damaging winds and even a few tornadoes.  Most of the tornadoes produced little or no damage as they touched down in open fields.

Flood in BUTLER, KANSAS
From 13-MAY-10 00:00:00 to 13-MAY-10 02:00:00 (CST-6)
Location: DOUGLASS
Flood cause: Heavy Rain
Property damage: 0.10K
Crop damage: 0.10K
Reported by: Law Enforcement

Low lying areas around town were flooded.

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:28:00 to 12-MAY-10 14:38:00 (CST-6)
Location: ZENDA
Magnitude: 1.00 
Crop damage: 25.00K
Reported by: COOP Observer

Some damage to wheat fields also occurred.

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:35:00 to 12-MAY-10 14:35:00 (CST-6)
Location: KINGMAN MUNI ARPT
Magnitude: 1.75 
Reported by: Trained Spotter

Lightning in SEDGWICK, KANSAS
From 13-MAY-10 23:48:00 to 13-MAY-10 23:48:00 (CST-6)
Location: HAYSVILLE
Property damage: 20.00K
Reported by: Emergency Manager

Lightning struck a house causing a small fire.

Tornado in MCPHERSON, KANSAS
From 12-MAY-10 14:52:00 to 12-MAY-10 14:56:00 (CST-6)
Location: ELYRIA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Tornado briefly touched down in an open field and moved northeast.

Tornado in RENO, KANSAS
From 12-MAY-10 15:18:00 to 12-MAY-10 15:20:00 (CST-6)
Location: CHENEY RES
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado very briefly touched down in an open field.

Thunderstorm Wind in CHAUTAUQUA, KANSAS
From 13-MAY-10 00:22:00 to 13-MAY-10 00:22:00 (CST-6)
Location: CEDAR VALE
Magnitude: 56.00 MG
Property damage: 10.00K
Reported by: Emergency Manager

Some power flashes were noted with a few powerlines knocked down.

Tornado in BUTLER, KANSAS
From 12-MAY-10 19:11:00 to 12-MAY-10 19:14:00 (CST-6)
Location: TOWANDA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado moved northeast over open pasture land.

Tornado in MCPHERSON, KANSAS
From 12-MAY-10 14:38:00 to 12-MAY-10 14:39:00 (CST-6)
Location: GALVA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tornado briefly touched down in an open field.

Tornado in MCPHERSON, KANSAS
From 12-MAY-10 15:16:00 to 12-MAY-10 15:17:00 (CST-6)
Location: CANTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Very weak tornado briefly touched down in an open field.

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:17:00 to 12-MAY-10 14:17:00 (CST-6)
Location: KINGMAN
Magnitude: 0.88 
Reported by: Amateur Radio

Hail in SEDGWICK, KANSAS
From 12-MAY-10 16:00:00 to 12-MAY-10 16:00:00 (CST-6)
Location: MT HOPE
Magnitude: 1.00 
Reported by: COOP Observer

Hail in KINGMAN, KANSAS
From 12-MAY-10 16:08:00 to 12-MAY-10 16:08:00 (CST-6)
Location: SPIVEY
Magnitude: 0.88 
Reported by: Trained Spotter

Hail size ranged from pea to nickel size.

Hail in KINGMAN, KANSAS
From 12-MAY-10 16:10:00 to 12-MAY-10 16:11:00 (CST-6)
Location: SPIVEY
Magnitude: 1.00 
Reported by: Public

Hail in COWLEY, KANSAS
From 13-MAY-10 00:00:00 to 13-MAY-10 00:00:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 1.75 
Reported by: Trained Spotter

Wind gusts to 60 mph were also reported.

Thunderstorm Wind in COWLEY, KANSAS
From 13-MAY-10 00:00:00 to 13-MAY-10 00:00:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 52.00 EG
Reported by: Trained Spotter

One inch hail was also reported.

Hail in COWLEY, KANSAS
From 13-MAY-10 00:00:00 to 13-MAY-10 00:00:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in COWLEY, KANSAS
From 13-MAY-10 00:01:00 to 13-MAY-10 00:01:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 1.75 
Reported by: Broadcast Media

Hail in MARION, KANSAS
From 12-MAY-10 17:36:00 to 12-MAY-10 17:36:00 (CST-6)
Location: FLORENCE
Magnitude: 0.88 
Reported by: Law Enforcement

Hail in MARION, KANSAS
From 12-MAY-10 17:38:00 to 12-MAY-10 17:38:00 (CST-6)
Location: FLORENCE
Magnitude: 1.00 
Reported by: Law Enforcement

Hail in SUMNER, KANSAS
From 12-MAY-10 17:50:00 to 12-MAY-10 17:50:00 (CST-6)
Location: ARGONIA
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in SEDGWICK, KANSAS
From 12-MAY-10 18:50:00 to 12-MAY-10 18:50:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 1.25 
Reported by: Public

Hail in COWLEY, KANSAS
From 13-MAY-10 00:07:00 to 13-MAY-10 00:07:00 (CST-6)
Location: MAPLE CITY
Magnitude: 1.75 
Reported by: Public

Hail in SEDGWICK, KANSAS
From 12-MAY-10 18:39:00 to 12-MAY-10 18:39:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 1.00 
Reported by: Official NWS Observations

Wind gusts to 65 mph accompanied the hail.

Hail in SEDGWICK, KANSAS
From 12-MAY-10 18:45:00 to 12-MAY-10 18:45:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 0.88 
Reported by: NWS Employee

Thunderstorm Wind in SEDGWICK, KANSAS
From 12-MAY-10 18:39:00 to 12-MAY-10 18:39:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 56.00 EG
Reported by: Official NWS Observations

One inch hail also accompanied the gusts.

Hail in SEDGWICK, KANSAS
From 12-MAY-10 19:35:00 to 12-MAY-10 19:35:00 (CST-6)
Location: WICHITA
Magnitude: 0.88 
Reported by: Broadcast Media

Hail in MARION, KANSAS
From 12-MAY-10 19:35:00 to 12-MAY-10 19:35:00 (CST-6)
Location: BURNS
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in COWLEY, KANSAS
From 12-MAY-10 23:55:00 to 12-MAY-10 23:55:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in COWLEY, KANSAS
From 13-MAY-10 00:09:00 to 13-MAY-10 00:09:00 (CST-6)
Location: MAPLE CITY
Magnitude: 1.00 
Reported by: Trained Spotter

Wind gusts to 60 mph were also reported.

Thunderstorm Wind in COWLEY, KANSAS
From 13-MAY-10 00:09:00 to 13-MAY-10 00:09:00 (CST-6)
Location: MAPLE CITY
Magnitude: 52.00 EG
Reported by: Trained Spotter

One inch hail was also reported.

Hail in CHAUTAUQUA, KANSAS
From 13-MAY-10 00:25:00 to 13-MAY-10 00:25:00 (CST-6)
Location: CEDAR VALE
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in CHAUTAUQUA, KANSAS
From 13-MAY-10 00:32:00 to 13-MAY-10 00:32:00 (CST-6)
Location: CEDAR VALE
Magnitude: 2.75 
Reported by: Emergency Manager

Hail in WILSON, KANSAS
From 13-MAY-10 01:09:00 to 13-MAY-10 01:09:00 (CST-6)
Location: NEW ALBANY
Magnitude: 1.75 
Reported by: Public

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:26:00 to 12-MAY-10 14:26:00 (CST-6)
Location: ZENDA
Magnitude: 0.88 
Reported by: Law Enforcement

Thunderstorm Wind in BUTLER, KANSAS
From 12-MAY-10 18:44:00 to 12-MAY-10 18:47:00 (CST-6)
Location: EL DORADO
Magnitude: 70.00 EG
Property damage: 250.00K
Reported by: Emergency Manager

Three semi tractor trailer trucks were overturned along the Kansas Turnpike directly underneath the K-254 overpass, when high tension powerlines fell onto the road.  The semi's became tangled in the wires and overturned or were pushed off the road.  2 injuries occurred as one of the semi's broke open when it hit the bridge pillar, spilling the moving vans contents into the rain.

Lightning in SEDGWICK, KANSAS
From 12-MAY-10 19:55:00 to 12-MAY-10 19:55:00 (CST-6)
Location: PARK CITY
Property damage: 20.00K
Reported by: Emergency Manager

Lightning struck a house causing a small fire.

Lightning in SEDGWICK, KANSAS
From 12-MAY-10 19:51:00 to 12-MAY-10 19:51:00 (CST-6)
Location: MAIZE
Property damage: 20.00K
Reported by: Emergency Manager

Lightning struck a house causing a small fire.

Hail in HARVEY, KANSAS
From 12-MAY-10 16:22:00 to 12-MAY-10 16:22:00 (CST-6)
Location: HESSTON
Magnitude: 1.00 
Reported by: Emergency Manager

Thunderstorm Wind in SEDGWICK, KANSAS
From 12-MAY-10 16:35:00 to 12-MAY-10 16:35:00 (CST-6)
Location: GODDARD
Magnitude: 70.00 MG
Reported by: Public

Lightning in SEDGWICK, KANSAS
From 12-MAY-10 18:59:00 to 12-MAY-10 18:59:00 (CST-6)
Location: EASTBOROUGH
Property damage: 20.00K
Reported by: Emergency Manager

Lightning struck a house causing a small fire.

Hail in HARVEY, KANSAS
From 12-MAY-10 15:47:00 to 12-MAY-10 15:47:00 (CST-6)
Location: HALSTEAD
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in SEDGWICK, KANSAS
From 12-MAY-10 16:10:00 to 12-MAY-10 16:10:00 (CST-6)
Location: MT HOPE
Magnitude: 1.00 
Reported by: Public

Hail in HARPER, KANSAS
From 12-MAY-10 15:51:00 to 12-MAY-10 15:51:00 (CST-6)
Location: ATTICA
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in KINGMAN, KANSAS
From 12-MAY-10 15:51:00 to 12-MAY-10 15:51:00 (CST-6)
Location: SPIVEY
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in HARPER, KANSAS
From 12-MAY-10 15:54:00 to 12-MAY-10 15:54:00 (CST-6)
Location: ATTICA
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in MCPHERSON, KANSAS
From 12-MAY-10 14:34:00 to 12-MAY-10 14:34:00 (CST-6)
Location: INMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in MCPHERSON, KANSAS
From 12-MAY-10 14:54:00 to 12-MAY-10 14:54:00 (CST-6)
Location: MC PHERSON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MCPHERSON, KANSAS
From 12-MAY-10 14:58:00 to 12-MAY-10 14:58:00 (CST-6)
Location: MC PHERSON ARPT
Magnitude: 1.75 
Reported by: Amateur Radio

Thunderstorm Wind in SEDGWICK, KANSAS
From 12-MAY-10 16:47:00 to 12-MAY-10 16:47:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 52.00 EG
Reported by: Amateur Radio

Amateur radio reported the wind gusts.

Hail in MARION, KANSAS
From 12-MAY-10 16:50:00 to 12-MAY-10 16:50:00 (CST-6)
Location: HILLSBORO
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in MARION, KANSAS
From 12-MAY-10 17:00:00 to 12-MAY-10 17:00:00 (CST-6)
Location: MARION
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter estimated the gust.

Hail in HARVEY, KANSAS
From 12-MAY-10 17:07:00 to 12-MAY-10 17:07:00 (CST-6)
Location: NEWTON
Magnitude: 0.75 
Reported by: Public

Hail in RENO, KANSAS
From 12-MAY-10 15:10:00 to 12-MAY-10 15:10:00 (CST-6)
Location: YODER
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in RENO, KANSAS
From 12-MAY-10 15:37:00 to 12-MAY-10 15:37:00 (CST-6)
Location: HAVEN
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in HARVEY, KANSAS
From 12-MAY-10 17:13:00 to 12-MAY-10 17:13:00 (CST-6)
Location: ANNELLY
Magnitude: 0.75 
Reported by: Trained Spotter

Thunderstorm Wind in SUMNER, KANSAS
From 12-MAY-10 16:15:00 to 12-MAY-10 16:17:00 (CST-6)
Location: MILTON
Magnitude: 70.00 EG
Reported by: Trained Spotter

A trained spotter estimated the gust to be between 70 and 80 mph.

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:10:00 to 12-MAY-10 14:10:00 (CST-6)
Location: PENALOSA
Magnitude: 1.00 
Crop damage: 25.00K
Reported by: Broadcast Media

Some crop damage occurred to wheat fields.

Hail in KINGMAN, KANSAS
From 12-MAY-10 14:30:00 to 12-MAY-10 14:37:00 (CST-6)
Location: KINGMAN
Magnitude: 1.75 
Property damage: 70.00K
Reported by: Trained Spotter

Hail up to goflball size moved across the northwest portion of town.  Fifty roofs were damaged by the hail, with 15 percent of those needing total replacement.