Robust convection developed ahead and along a strong cold front that slowly moved through the central plains states.  Hail was the primary severe weather threat associated with the strongest thunderstorms, with stones up to the size of golfballs reported. Several thunderstorms also collapsed and produced downburst winds to 60mph. Flash flooding associated with the storm system has been included as a separate episode.

Hail in REPUBLIC, KANSAS
From 26-APR-09 12:09:00 to 26-APR-09 12:09:00 (CST-6)
Location: CUBA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 26-APR-09 12:20:00 to 26-APR-09 12:20:00 (CST-6)
Location: ENOSDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Home weather station also measured a 51mph wind gust.

Hail in OTTAWA, KANSAS
From 26-APR-09 12:26:00 to 26-APR-09 12:26:00 (CST-6)
Location: TESCOTT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail covering the ground.

Hail in OTTAWA, KANSAS
From 26-APR-09 12:28:00 to 26-APR-09 12:28:00 (CST-6)
Location: ADA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in WASHINGTON, KANSAS
From 26-APR-09 12:29:00 to 26-APR-09 12:29:00 (CST-6)
Location: STRAWBERRY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTTAWA, KANSAS
From 26-APR-09 12:30:00 to 26-APR-09 12:30:00 (CST-6)
Location: SUMNERVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MORRIS, KANSAS
From 26-APR-09 18:32:00 to 26-APR-09 18:32:00 (CST-6)
Location: BURDICK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter residence lost power.

Hail in LYON, KANSAS
From 26-APR-09 19:17:00 to 26-APR-09 19:17:00 (CST-6)
Location: EMPORIA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LYON, KANSAS
From 26-APR-09 19:17:00 to 26-APR-09 19:17:00 (CST-6)
Location: EMPORIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, KANSAS
From 26-APR-09 13:15:00 to 26-APR-09 13:15:00 (CST-6)
Location: BARNES
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTTAWA, KANSAS
From 26-APR-09 13:20:00 to 26-APR-09 13:20:00 (CST-6)
Location: LAMAR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in OTTAWA, KANSAS
From 26-APR-09 13:20:00 to 26-APR-09 13:20:00 (CST-6)
Location: LAMAR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Thunderstorm Wind in DICKINSON, KANSAS
From 26-APR-09 14:21:00 to 26-APR-09 14:21:00 (CST-6)
Location: ENTERPRISE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in DICKINSON, KANSAS
From 26-APR-09 14:22:00 to 26-APR-09 14:22:00 (CST-6)
Location: ABILENE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in GEARY, KANSAS
From 26-APR-09 16:35:00 to 26-APR-09 16:35:00 (CST-6)
Location: GRANDVIEW PLAZA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in RILEY, KANSAS
From 26-APR-09 08:47:00 to 26-APR-09 08:47:00 (CST-6)
Location: MANHATTAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Reported by a motorist along I-70 at mile post 318.

Hail in CLOUD, KANSAS
From 26-APR-09 09:17:00 to 26-APR-09 09:17:00 (CST-6)
Location: CONCORDIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OTTAWA, KANSAS
From 26-APR-09 12:43:00 to 26-APR-09 12:43:00 (CST-6)
Location: MINNEAPOLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in OTTAWA, KANSAS
From 26-APR-09 12:43:00 to 26-APR-09 12:43:00 (CST-6)
Location: MINNEAPOLIS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in OTTAWA, KANSAS
From 26-APR-09 12:53:00 to 26-APR-09 12:53:00 (CST-6)
Location: MINNEAPOLIS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Stones up to the size of golf balls reported.  Hail covering the ground was predominantly less than one inch in diameter.

Hail in OTTAWA, KANSAS
From 26-APR-09 12:54:00 to 26-APR-09 12:54:00 (CST-6)
Location: MINNEAPOLIS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in OTTAWA, KANSAS
From 26-APR-09 13:00:00 to 26-APR-09 13:00:00 (CST-6)
Location: LAMAR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WASHINGTON, KANSAS
From 26-APR-09 13:07:00 to 26-APR-09 13:07:00 (CST-6)
Location: GREENLEAF
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLOUD, KANSAS
From 26-APR-09 09:25:00 to 26-APR-09 09:25:00 (CST-6)
Location: RICE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 26-APR-09 09:43:00 to 26-APR-09 09:43:00 (CST-6)
Location: ENOSDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 26-APR-09 10:13:00 to 26-APR-09 10:13:00 (CST-6)
Location: HANOVER ARPT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in SHAWNEE, KANSAS
From 26-APR-09 10:32:00 to 26-APR-09 10:32:00 (CST-6)
Location: TOPEKA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JEFFERSON, KANSAS
From 26-APR-09 10:57:00 to 26-APR-09 10:57:00 (CST-6)
Location: GRANTVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, KANSAS
From 26-APR-09 12:09:00 to 26-APR-09 12:09:00 (CST-6)
Location: HADDAM
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter