A cold front moved south into northeastern Oklahoma during the evening of April 10th. Strong to severe thunderstorms developed along and ahead of the front as it moved through the region into the early morning hours of the 11th. The storms produced hail up to golfball size and damaging wind.
The cold front's southward push slowed during the day on the 11th. Moist and unstable air remained in place ahead of the front, which supported the development of severe thunderstorms with large hail across southeastern Oklahoma during the early afternoon hours of the 11th.

Hail in WASHINGTON, OKLAHOMA
From 10-APR-16 18:59:00 to 10-APR-16 18:59:00 (CST-6)
Location: COPAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Hail in OSAGE, OKLAHOMA
From 10-APR-16 19:36:00 to 10-APR-16 19:36:00 (CST-6)
Location: OKESA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, OKLAHOMA
From 10-APR-16 19:37:00 to 10-APR-16 19:37:00 (CST-6)
Location: BARTLESVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WASHINGTON, OKLAHOMA
From 10-APR-16 19:44:00 to 10-APR-16 19:44:00 (CST-6)
Location: DEWEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Post Office

Hail in WASHINGTON, OKLAHOMA
From 10-APR-16 19:47:00 to 10-APR-16 19:47:00 (CST-6)
Location: DEWEY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in NOWATA, OKLAHOMA
From 10-APR-16 20:38:00 to 10-APR-16 20:38:00 (CST-6)
Location: SOUTH COFFEEVILLE AR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in OSAGE, OKLAHOMA
From 10-APR-16 20:45:00 to 10-APR-16 20:45:00 (CST-6)
Location: PEARSONIA
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Oklahoma Mesonet station near Foraker measured 62 mph thunderstorm wind gusts.

Hail in CHOCTAW, OKLAHOMA
From 11-APR-16 14:24:00 to 11-APR-16 14:24:00 (CST-6)
Location: BOSWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OSAGE, OKLAHOMA
From 10-APR-16 18:30:00 to 10-APR-16 18:30:00 (CST-6)
Location: PAWHUSKA
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Hail in WASHINGTON, OKLAHOMA
From 10-APR-16 19:40:00 to 10-APR-16 19:40:00 (CST-6)
Location: HI WAY ARPT
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in OSAGE, OKLAHOMA
From 10-APR-16 20:32:00 to 10-APR-16 20:32:00 (CST-6)
Location: SHIDLER ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Thunderstorm wind gusted to 60 mph.

Thunderstorm Wind in CREEK, OKLAHOMA
From 11-APR-16 01:02:00 to 11-APR-16 01:02:00 (CST-6)
Location: SAPULPA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind snapped numerous large tree limbs.

Hail in PUSHMATAHA, OKLAHOMA
From 11-APR-16 13:38:00 to 11-APR-16 13:38:00 (CST-6)
Location: MOYERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in TULSA, OKLAHOMA
From 11-APR-16 01:13:00 to 11-APR-16 01:13:00 (CST-6)
Location: TULSA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind blew down a privacy fence and damaged a store sign.

Hail in PUSHMATAHA, OKLAHOMA
From 11-APR-16 14:18:00 to 11-APR-16 14:18:00 (CST-6)
Location: NASHOBA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CREEK, OKLAHOMA
From 11-APR-16 00:27:00 to 11-APR-16 00:27:00 (CST-6)
Location: SILVER CITY
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Strong thunderstorm wind damaged a tank battery, snapped large tree limbs, and damaged an outbuilding.

Thunderstorm Wind in CREEK, OKLAHOMA
From 11-APR-16 00:53:00 to 11-APR-16 00:53:00 (CST-6)
Location: KELLYVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Strong thunderstorm wind blew down large tree limbs.