In the early morning hours of June 7th, 2010, a very large Mesoscale Convective System (MCS), moved across South Central Kansas. This system began as a cluster of thunderstorms across Northwest Kansas. As this cluster moved eastward, it came across an axis of very unstable air and strong moisture transport. Both of these fed the storms which allowed it to increase in size and intensity. The axis of instability forced the system to switch from an eastward propagation to the southeast. The MCS intensified over Reno and Harvey Counties in Kansas and moved rapidly south, all the way to the Oklahoma border. Strong, damaging winds and quarter size hail accompanied this system.

Thunderstorm Wind in RENO, KANSAS
From 07-JUN-10 02:23:00 to 07-JUN-10 02:23:00 (CST-6)
Location: PLEVNA
Magnitude: 52.00 EG
Reported by: COOP Observer

A COOP observer estimated the gust.

Thunderstorm Wind in KINGMAN, KANSAS
From 07-JUN-10 03:00:00 to 07-JUN-10 03:00:00 (CST-6)
Location: KINGMAN
Magnitude: 56.00 EG
Reported by: Trained Spotter

A trained spotter estimated the gust.

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:09:00 to 07-JUN-10 03:09:00 (CST-6)
Location: MAIZE
Magnitude: 52.00 EG
Reported by: Trained Spotter

A national weather service employee estimated the wind gust.

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:13:00 to 07-JUN-10 03:13:00 (CST-6)
Location: BENTLEY
Magnitude: 56.00 EG
Reported by: Trained Spotter

A trained spotter estimated the wind gust.

Thunderstorm Wind in KINGMAN, KANSAS
From 07-JUN-10 03:13:00 to 07-JUN-10 03:13:00 (CST-6)
Location: NORWICH
Magnitude: 52.00 EG
Reported by: Law Enforcement

A law enforcement officer estimated winds of 50 to 60 mph.

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:10:00 to 07-JUN-10 03:20:00 (CST-6)
Location: MAIZE
Magnitude: 61.00 EG
Reported by: Trained Spotter

An off duty National Weather Service employee reported the gust. Pea size hail also was reported.

Hail in BUTLER, KANSAS
From 07-JUN-10 03:28:00 to 07-JUN-10 03:28:00 (CST-6)
Location: ANDOVER
Magnitude: 0.88 
Reported by: Emergency Manager

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:15:00 to 07-JUN-10 03:25:00 (CST-6)
Location: HAYSVILLE
Magnitude: 56.00 EG
Reported by: Trained Spotter

The severe winds lasted for almost 10 minutes.

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:18:00 to 07-JUN-10 03:18:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 54.00 MG
Reported by: ASOS

Thunderstorm Wind in SEDGWICK, KANSAS
From 07-JUN-10 03:20:00 to 07-JUN-10 03:20:00 (CST-6)
Location: DERBY
Magnitude: 56.00 EG
Property damage: 10.00K
Reported by: Newspaper

A large tree was knocked down onto the city office, blocking the drive thru payment window.  Several other trees were knocked down across town.

Hail in SUMNER, KANSAS
From 07-JUN-10 03:52:00 to 07-JUN-10 03:52:00 (CST-6)
Location: WELLINGTON
Magnitude: 1.00 
Reported by: Public

Winds estimated to 60 mph were also reported.

Thunderstorm Wind in SUMNER, KANSAS
From 07-JUN-10 03:52:00 to 07-JUN-10 03:52:00 (CST-6)
Location: WELLINGTON
Magnitude: 52.00 EG
Reported by: Public

Quarter sized hail was also reported.

Thunderstorm Wind in COWLEY, KANSAS
From 07-JUN-10 04:08:00 to 07-JUN-10 04:08:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 52.00 EG
Reported by: Emergency Manager

The emergency manager reported sustained winds of 45 mph with gusts to 60 mph.

Thunderstorm Wind in SUMNER, KANSAS
From 07-JUN-10 03:45:00 to 07-JUN-10 03:45:00 (CST-6)
Location: ARGONIA
Magnitude: 56.00 EG
Property damage: 2.00K
Reported by: COOP Observer

Some minor roof damage was reported.

Thunderstorm Wind in COWLEY, KANSAS
From 07-JUN-10 04:08:00 to 07-JUN-10 04:08:00 (CST-6)
Location: WINFIELD ARPT
Magnitude: 52.00 MG
Reported by: ASOS

Thunderstorm Wind in COWLEY, KANSAS
From 07-JUN-10 04:17:00 to 07-JUN-10 04:17:00 (CST-6)
Location: ARKANSAS CITY
Magnitude: 52.00 EG
Reported by: Public

The public estimated the wind gust.