A warm front lifted northward through Kansas during the early morning hours of the 15th.  Convection along the front lifted northward with the boundary.  Severe thunderstorms embedded within this convective complex brought large hail up to one and a quarter inches in diameter to locations north of I-70 before 11am CST. Storm re-intensified during the early afternoon hours as an upper level shortwave trough embedded within the mean central US trough moved through the plains states.  This, and cool convective outflow helped to push the front back southward between the afternoon and evening.  Hail up to the size of baseballs was reported during the afternoon, as were two reports of 80mph winds.

Hail in COFFEY, KANSAS
From 15-MAY-09 17:25:00 to 15-MAY-09 17:25:00 (CST-6)
Location: AGRICOLA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LYON, KANSAS
From 15-MAY-09 16:43:00 to 15-MAY-09 16:43:00 (CST-6)
Location: EMPORIA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in OSAGE, KANSAS
From 15-MAY-09 16:45:00 to 15-MAY-09 16:45:00 (CST-6)
Location: BARCLAY
Magnitude: 80.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An 8 inch tree limb was reported to have been blown down.

Hail in OSAGE, KANSAS
From 15-MAY-09 17:14:00 to 15-MAY-09 17:14:00 (CST-6)
Location: MAXON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in FRANKLIN, KANSAS
From 15-MAY-09 17:21:00 to 15-MAY-09 17:21:00 (CST-6)
Location: POMONA
Magnitude: 80.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind speed estimated by Franklin County Emergency Manager.

Hail in MARSHALL, KANSAS
From 15-MAY-09 08:30:00 to 15-MAY-09 08:30:00 (CST-6)
Location: MARYSVILLE ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in NEMAHA, KANSAS
From 15-MAY-09 09:43:00 to 15-MAY-09 09:43:00 (CST-6)
Location: SABETHA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NEMAHA, KANSAS
From 15-MAY-09 09:44:00 to 15-MAY-09 09:44:00 (CST-6)
Location: BAILEYVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NEMAHA, KANSAS
From 15-MAY-09 09:54:00 to 15-MAY-09 09:54:00 (CST-6)
Location: SENECA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in DOUGLAS, KANSAS
From 15-MAY-09 16:25:00 to 15-MAY-09 16:25:00 (CST-6)
Location: BALDWIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WABAUNSEE, KANSAS
From 15-MAY-09 16:25:00 to 15-MAY-09 16:25:00 (CST-6)
Location: ESKRIDGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DOUGLAS, KANSAS
From 15-MAY-09 16:26:00 to 15-MAY-09 16:26:00 (CST-6)
Location: LAWRENCE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DOUGLAS, KANSAS
From 15-MAY-09 16:28:00 to 15-MAY-09 16:28:00 (CST-6)
Location: EUDORA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROWN, KANSAS
From 15-MAY-09 10:21:00 to 15-MAY-09 10:21:00 (CST-6)
Location: ROBINSON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, KANSAS
From 15-MAY-09 10:48:00 to 15-MAY-09 10:48:00 (CST-6)
Location: WHITING
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROWN, KANSAS
From 15-MAY-09 10:51:00 to 15-MAY-09 10:51:00 (CST-6)
Location: HORTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BROWN, KANSAS
From 15-MAY-09 10:53:00 to 15-MAY-09 10:53:00 (CST-6)
Location: HORTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in SHAWNEE, KANSAS
From 15-MAY-09 13:50:00 to 15-MAY-09 13:50:00 (CST-6)
Location: ELMONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WABAUNSEE, KANSAS
From 15-MAY-09 15:26:00 to 15-MAY-09 15:26:00 (CST-6)
Location: MAPLE HILL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SHAWNEE, KANSAS
From 15-MAY-09 15:41:00 to 15-MAY-09 15:41:00 (CST-6)
Location: WILLARD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, KANSAS
From 15-MAY-09 15:55:00 to 15-MAY-09 15:55:00 (CST-6)
Location: POMONA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in DOUGLAS, KANSAS
From 15-MAY-09 16:12:00 to 15-MAY-09 16:12:00 (CST-6)
Location: WORDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, KANSAS
From 15-MAY-09 13:54:00 to 15-MAY-09 13:54:00 (CST-6)
Location: HOYT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SHAWNEE, KANSAS
From 15-MAY-09 14:01:00 to 15-MAY-09 14:01:00 (CST-6)
Location: (TOP)BILLARD ARPT TO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report relayed by local news media.

Hail in POTTAWATOMIE, KANSAS
From 15-MAY-09 14:20:00 to 15-MAY-09 14:20:00 (CST-6)
Location: ST MARYS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in POTTAWATOMIE, KANSAS
From 15-MAY-09 14:30:00 to 15-MAY-09 14:30:00 (CST-6)
Location: ST MARYS
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in DOUGLAS, KANSAS
From 15-MAY-09 15:30:00 to 15-MAY-09 15:30:00 (CST-6)
Location: EUDORA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, KANSAS
From 15-MAY-09 15:35:00 to 15-MAY-09 15:35:00 (CST-6)
Location: POMONA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, KANSAS
From 15-MAY-09 15:41:00 to 15-MAY-09 15:41:00 (CST-6)
Location: POMONA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in DOUGLAS, KANSAS
From 15-MAY-09 16:14:00 to 15-MAY-09 16:14:00 (CST-6)
Location: WORDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SHAWNEE, KANSAS
From 15-MAY-09 14:54:00 to 15-MAY-09 14:54:00 (CST-6)
Location: (TOP)BILLARD ARPT TO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in WABAUNSEE, KANSAS
From 15-MAY-09 15:19:00 to 15-MAY-09 15:19:00 (CST-6)
Location: ALMA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Hail in DOUGLAS, KANSAS
From 15-MAY-09 15:25:00 to 15-MAY-09 15:25:00 (CST-6)
Location: LAWRENCE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 15-MAY-09 16:30:00 to 15-MAY-09 16:30:00 (CST-6)
Location: CARBONDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 15-MAY-09 16:33:00 to 15-MAY-09 16:33:00 (CST-6)
Location: SCRANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 15-MAY-09 16:35:00 to 15-MAY-09 16:35:00 (CST-6)
Location: CARBONDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSAGE, KANSAS
From 15-MAY-09 16:35:00 to 15-MAY-09 16:35:00 (CST-6)
Location: BURLINGAME
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 15-MAY-09 07:38:00 to 15-MAY-09 07:38:00 (CST-6)
Location: WASHINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in WASHINGTON, KANSAS
From 15-MAY-09 07:45:00 to 15-MAY-09 07:45:00 (CST-6)
Location: WASHINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 15-MAY-09 07:50:00 to 15-MAY-09 07:50:00 (CST-6)
Location: HANOVER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WASHINGTON, KANSAS
From 15-MAY-09 07:51:00 to 15-MAY-09 07:51:00 (CST-6)
Location: HANOVER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NEMAHA, KANSAS
From 15-MAY-09 09:56:00 to 15-MAY-09 09:56:00 (CST-6)
Location: SENECA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Reported at the Nemaha County dispatch center in Seneca.

Hail in NEMAHA, KANSAS
From 15-MAY-09 09:58:00 to 15-MAY-09 09:58:00 (CST-6)
Location: SENECA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLOUD, KANSAS
From 15-MAY-09 06:13:00 to 15-MAY-09 06:13:00 (CST-6)
Location: CLYDE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 15-MAY-09 07:38:00 to 15-MAY-09 07:38:00 (CST-6)
Location: WASHINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NEMAHA, KANSAS
From 15-MAY-09 10:15:00 to 15-MAY-09 10:15:00 (CST-6)
Location: WOODLAWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NEMAHA, KANSAS
From 15-MAY-09 10:15:00 to 15-MAY-09 10:15:00 (CST-6)
Location: SENECA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter