Convection fired along a cold front that moved from northwest to southeast across the forecast area between the late afternoon and evening of the 13th. A strong capping inversion hampered convective development till the arrival of the cold front after 4pm CST. Storms became severe shortly thereafter, and produced predominantly large hail. Two brief tornadoes also occurred in Coffey County, but no damage was reported with either event.

Hail in LYON, KANSAS
From 13-MAY-09 15:55:00 to 13-MAY-09 15:55:00 (CST-6)
Location: READING
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 13-MAY-09 16:05:00 to 13-MAY-09 16:05:00 (CST-6)
Location: BARCLAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 13-MAY-09 16:07:00 to 13-MAY-09 16:07:00 (CST-6)
Location: ARVONIA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tornado in COFFEY, KANSAS
From 13-MAY-09 16:52:00 to 13-MAY-09 16:52:00 (CST-6)
Location: BURLINGTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado touched down in an open field to the northeast of Burlington, associated with a supercell thunderstorm that moved through east central Kansas the evening of May 13, 2009.  No damage was reported. The KMBC (Kansas City news station) helicopter and the public observed and videotaped the tornado.

Tornado in COFFEY, KANSAS
From 13-MAY-09 17:00:00 to 13-MAY-09 17:00:00 (CST-6)
Location: SHARPE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief tornado touched down in an open field near the Coffey/Anderson County line, associated with the same supercell thunderstorm that produced the brief tornado a few minutes earlier.  A trained spotter took video of the tornado. No damage was reported.

Hail in COFFEY, KANSAS
From 13-MAY-09 16:16:00 to 13-MAY-09 16:16:00 (CST-6)
Location: LEBO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in COFFEY, KANSAS
From 13-MAY-09 16:21:00 to 13-MAY-09 16:21:00 (CST-6)
Location: LEBO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 13-MAY-09 16:22:00 to 13-MAY-09 16:22:00 (CST-6)
Location: OLIVET
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 16:44:00 to 13-MAY-09 16:44:00 (CST-6)
Location: SHARPE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in ANDERSON, KANSAS
From 13-MAY-09 17:10:00 to 13-MAY-09 17:10:00 (CST-6)
Location: GARNETT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 17:10:00 to 13-MAY-09 17:10:00 (CST-6)
Location: ALICEVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 17:16:00 to 13-MAY-09 17:16:00 (CST-6)
Location: ALICEVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 17:16:00 to 13-MAY-09 17:16:00 (CST-6)
Location: ALICEVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 13-MAY-09 16:23:00 to 13-MAY-09 16:23:00 (CST-6)
Location: OLIVET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 16:26:00 to 13-MAY-09 16:26:00 (CST-6)
Location: LEBO
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 16:29:00 to 13-MAY-09 16:29:00 (CST-6)
Location: HALLS SUMMIT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OSAGE, KANSAS
From 13-MAY-09 16:32:00 to 13-MAY-09 16:32:00 (CST-6)
Location: MELVERN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ANDERSON, KANSAS
From 13-MAY-09 17:20:00 to 13-MAY-09 17:20:00 (CST-6)
Location: WESTPHALIA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ANDERSON, KANSAS
From 13-MAY-09 17:59:00 to 13-MAY-09 17:59:00 (CST-6)
Location: KINCAID
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in OSAGE, KANSAS
From 13-MAY-09 16:35:00 to 13-MAY-09 16:35:00 (CST-6)
Location: MELVERN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COFFEY, KANSAS
From 13-MAY-09 16:40:00 to 13-MAY-09 16:40:00 (CST-6)
Location: HALLS SUMMIT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ANDERSON, KANSAS
From 13-MAY-09 18:01:00 to 13-MAY-09 18:01:00 (CST-6)
Location: KINCAID
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OSAGE, KANSAS
From 13-MAY-09 16:40:00 to 13-MAY-09 16:40:00 (CST-6)
Location: MAXON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter