A powerful storm system moved through the inter-mountain west toward the southern Plains late on the 10th and into the 11th. Thunderstorms developed very early over eastern New Mexico/West Texas, as a lead disturbance rotated around main storm system. The storms moved northeast, impacting western Oklahoma with some marginally severe winds and small hail. Another disturbance fired off thunderstorms further south into northern Texas later into the early afternoon, with the storms expanding as they moved north-northeast into Oklahoma. High winds caused damage from south-central into northern Oklahoma, with most of the damage confined to downed tree limbs, although some of the stronger gusts were able to cause roof damage and down trees. The thunderstorms moved into eastern Oklahoma by early evening.

Thunderstorm Wind in COAL, OKLAHOMA
From 11-MAY-11 14:59:00 to 11-MAY-11 14:59:00 (CST-6)
Location: COALGATE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage was reported with the wind gust.

Thunderstorm Wind in PAYNE, OKLAHOMA
From 11-MAY-11 15:30:00 to 11-MAY-11 15:30:00 (CST-6)
Location: GLENCOE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage was reported with the wind gust.

Thunderstorm Wind in PAYNE, OKLAHOMA
From 11-MAY-11 15:43:00 to 11-MAY-11 15:43:00 (CST-6)
Location: YALE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

High Wind in GARFIELD, OKLAHOMA
From 11-MAY-11 16:10:00 to 11-MAY-11 16:10:00 (CST-6)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in ROGER MILLS, OKLAHOMA
From 11-MAY-11 06:30:00 to 11-MAY-11 06:30:00 (CST-6)
Location: CRAWFORD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BECKHAM, OKLAHOMA
From 11-MAY-11 06:30:00 to 11-MAY-11 06:30:00 (CST-6)
Location: ERICK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in JEFFERSON, OKLAHOMA
From 11-MAY-11 12:30:00 to 11-MAY-11 12:30:00 (CST-6)
Location: TERRAL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage was reported with the wind gust.

Thunderstorm Wind in STEPHENS, OKLAHOMA
From 11-MAY-11 13:20:00 to 11-MAY-11 13:20:00 (CST-6)
Location: BRAY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No damage was reported with the wind gust.

Thunderstorm Wind in CARTER, OKLAHOMA
From 11-MAY-11 13:40:00 to 11-MAY-11 13:40:00 (CST-6)
Location: ARDMORE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MURRAY, OKLAHOMA
From 11-MAY-11 14:00:00 to 11-MAY-11 14:00:00 (CST-6)
Location: SULPHUR
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in KAY, OKLAHOMA
From 11-MAY-11 14:10:00 to 11-MAY-11 14:10:00 (CST-6)
Location: NEWKIRK
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in KAY, OKLAHOMA
From 11-MAY-11 14:15:00 to 11-MAY-11 14:15:00 (CST-6)
Location: NEWKIRK
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in OKLAHOMA, OKLAHOMA
From 11-MAY-11 14:15:00 to 11-MAY-11 14:15:00 (CST-6)
Location: THE VILLAGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The was reported near the Quail Springs Mall.

Hail in KAY, OKLAHOMA
From 11-MAY-11 14:16:00 to 11-MAY-11 14:16:00 (CST-6)
Location: HARDY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flood in CANADIAN, OKLAHOMA
From 11-MAY-11 14:25:00 to 11-MAY-11 14:25:00 (CST-6)
Location: YUKON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Several areas around the Oklahoma City metro reported several inches of water over the roadways due to one to two inches of rainfall falling in about an hour. The water quickly receded after the rain ended.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 11-MAY-11 14:40:00 to 11-MAY-11 14:40:00 (CST-6)
Location: EDMOND
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The wind gust occurred on University Drive near the University of Central Oklahoma campus.

Thunderstorm Wind in MURRAY, OKLAHOMA
From 11-MAY-11 13:52:00 to 11-MAY-11 13:52:00 (CST-6)
Location: DAVIS
Magnitude: 52.00 EG
Property damage: 11.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A roof was taken off of a large metal shop building, with overhead doors on the east and west sides. Pieces of the roof landed on Highway 7, with local authorities having to briefly reroute traffic. The building was located near US Highway 7 and State Highway 110. No injuries were reported. Monetary damages were estimated.

Thunderstorm Wind in BRYAN, OKLAHOMA
From 11-MAY-11 14:10:00 to 11-MAY-11 14:10:00 (CST-6)
Location: CARTWRIGHT
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Post Office

Several tree limbs were downed by the strong winds. Monetary damages were estimated.

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 11-MAY-11 14:30:00 to 11-MAY-11 14:40:00 (CST-6)
Location: THE VILLAGE
Magnitude: 56.00 EG
Reported by: Broadcast Media

Shingles were blown off a roof and several 3-4 inch diameter tree limbs were downed near the intersection of Memorial Road and Western Avenue. An apartment complex also lost part of its roof several minutes later near the Broadway Extension and and Hefner Road. The report was relayed by KFOR-TV. Monetary damage estimates were not available.

Thunderstorm Wind in PAYNE, OKLAHOMA
From 11-MAY-11 15:20:00 to 11-MAY-11 15:20:00 (CST-6)
Location: CUSHING
Magnitude: 61.00 EG
Reported by: Emergency Manager

Straight line winds caused minor roof damage in the form of shingles blown off rooftops. Carports were also damaged. Several trees were blown down, along with numerous branches. Four power poles were blown down. The worst of the damage occurred over a two mile long and a half mile wide path. This included the northern portion of Cushing. Monetary damage estimates were not available.

Thunderstorm Wind in LINCOLN, OKLAHOMA
From 11-MAY-11 15:20:00 to 11-MAY-11 15:20:00 (CST-6)
Location: CARNEY
Magnitude: 52.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Emergency Manager

Severe winds caused guttering to detach from a home, and downed large tree branches. Monetary damages were estimated.