Thunderstorms developed early in the afternoon over western Oklahoma, as the beginning of a very active weather pattern began to unfold. Thunderstorms were present from northwest Oklahoma, south through northern Texas. The thunderstorms over northern Oklahoma dissipated by early evening, with a cluster of thunderstorms continuing south of I-40. Embedded in the cluster were supercells, with many areas of large hail reported. Brief tornadoes occurred over Caddo county, but no damage was reported. Wind damage was reported into the evening as the storms become more linear. Non-thunderstorm severe winds were observed over north-central Oklahoma, due to strong winds mixing down to the surface. Minor tree damage was reported as a result.

Hail in BECKHAM, OKLAHOMA
From 19-MAY-11 12:35:00 to 19-MAY-11 12:35:00 (CST-6)
Location: SAYRE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in JACKSON, OKLAHOMA
From 19-MAY-11 12:40:00 to 19-MAY-11 12:40:00 (CST-6)
Location: ELDORADO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ROGER MILLS, OKLAHOMA
From 19-MAY-11 13:11:00 to 19-MAY-11 13:11:00 (CST-6)
Location: HAMMON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in OKLAHOMA, OKLAHOMA
From 19-MAY-11 22:44:00 to 19-MAY-11 22:44:00 (CST-6)
Location: (OKC)WILL ROGERS APT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

High Wind in KAY, OKLAHOMA
From 19-MAY-11 19:45:00 to 19-MAY-11 19:45:00 (CST-6)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The non-thunderstorm wind gust occurred 4 miles south-southeast of Blackwell.

High Wind in NOBLE, OKLAHOMA
From 19-MAY-11 21:55:00 to 19-MAY-11 21:55:00 (CST-6)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The non-thunderstorm wind gust occurred 7 miles south-southeast of Red Rock.

Hail in JACKSON, OKLAHOMA
From 19-MAY-11 13:14:00 to 19-MAY-11 13:14:00 (CST-6)
Location: MARTHA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in ROGER MILLS, OKLAHOMA
From 19-MAY-11 13:15:00 to 19-MAY-11 13:15:00 (CST-6)
Location: HAMMON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CUSTER, OKLAHOMA
From 19-MAY-11 13:39:00 to 19-MAY-11 13:39:00 (CST-6)
Location: BUTLER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

High Wind in GARFIELD, OKLAHOMA
From 19-MAY-11 19:50:00 to 19-MAY-11 19:50:00 (CST-6)
Magnitude: 52.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Public

The non-thunderstorm wind gust occurred near Hunter. A few tree limbs were blown down by the gust.

High Wind in NOBLE, OKLAHOMA
From 19-MAY-11 22:00:00 to 19-MAY-11 22:00:00 (CST-6)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The non-thunderstorm wind gust occurred 7 miles south-southeast of Red Rock.

High Wind in KAY, OKLAHOMA
From 19-MAY-11 23:26:00 to 19-MAY-11 23:26:00 (CST-6)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The non-thunderstorm wind gust occurred 2 miles northeast of Ponca City.

Hail in JACKSON, OKLAHOMA
From 19-MAY-11 13:39:00 to 19-MAY-11 13:39:00 (CST-6)
Location: DUKE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in BECKHAM, OKLAHOMA
From 19-MAY-11 12:20:00 to 19-MAY-11 12:20:00 (CST-6)
Location: SAYRE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in JACKSON, OKLAHOMA
From 19-MAY-11 14:13:00 to 19-MAY-11 14:13:00 (CST-6)
Location: BLAIR
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in WOODS, OKLAHOMA
From 19-MAY-11 14:38:00 to 19-MAY-11 14:38:00 (CST-6)
Location: CAMP HOUSTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KIOWA, OKLAHOMA
From 19-MAY-11 15:11:00 to 19-MAY-11 15:11:00 (CST-6)
Location: COLD SPRINGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KIOWA, OKLAHOMA
From 19-MAY-11 15:39:00 to 19-MAY-11 15:39:00 (CST-6)
Location: COOPERTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was reported near the junction of Highways 19 and 54.

High Wind in KAY, OKLAHOMA
From 19-MAY-11 23:45:00 to 19-MAY-11 23:45:00 (CST-6)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The non-thunderstorm wind gust occurred 8 miles east of Newkirk.

High Wind in KAY, OKLAHOMA
From 19-MAY-11 23:55:00 to 19-MAY-11 23:55:00 (CST-6)
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The non-thunderstorm wind gust occurred 8 miles east of Newkirk.

Thunderstorm Wind in COTTON, OKLAHOMA
From 19-MAY-11 21:00:00 to 19-MAY-11 21:00:00 (CST-6)
Location: WALTERS
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Ten power poles were downed on Highway 5 due to the severe wind. Monetary damages were estimated.

Hail in KIOWA, OKLAHOMA
From 19-MAY-11 15:49:00 to 19-MAY-11 15:49:00 (CST-6)
Location: COOPERTON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The hail was reported near the junction of Highways 115 and 19.

Hail in CADDO, OKLAHOMA
From 19-MAY-11 16:10:00 to 19-MAY-11 16:10:00 (CST-6)
Location: BOONE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in TILLMAN, OKLAHOMA
From 19-MAY-11 18:25:00 to 19-MAY-11 18:25:00 (CST-6)
Location: DAVIDSON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in JACKSON, OKLAHOMA
From 19-MAY-11 12:35:00 to 19-MAY-11 12:40:00 (CST-6)
Location: ELDORADO
Magnitude: 2.75 
Reported by: SHAVE Project

Some of the hail dented automobiles. Some of the wheat fields also sustained some damage. Monetary damage estimates were not available due to lack of specific information.

Hail in GRADY, OKLAHOMA
From 19-MAY-11 18:50:00 to 19-MAY-11 18:50:00 (CST-6)
Location: TUTTLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tornado in KIOWA, OKLAHOMA
From 19-MAY-11 15:50:00 to 19-MAY-11 15:50:00 (CST-6)
Location: COOPERTON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A storm chaser observed and photographed a tornado approximately 1 mile north of Cooperton. No known damage occurred.

Hail in TILLMAN, OKLAHOMA
From 19-MAY-11 19:25:00 to 19-MAY-11 19:25:00 (CST-6)
Location: FREDERICK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 19-MAY-11 20:10:00 to 19-MAY-11 20:10:00 (CST-6)
Location: CHATTANOOGA
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in COMANCHE, OKLAHOMA
From 19-MAY-11 20:37:00 to 19-MAY-11 20:37:00 (CST-6)
Location: LAWTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado in CADDO, OKLAHOMA
From 19-MAY-11 17:40:00 to 19-MAY-11 17:40:00 (CST-6)
Location: APACHE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An NWS employee observed a small, brief tornado to the west of Apache.  No known damage occurred with this tornado.

Thunderstorm Wind in COMANCHE, OKLAHOMA
From 19-MAY-11 20:15:00 to 19-MAY-11 20:15:00 (CST-6)
Location: CHATTANOOGA
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Fourteen power poles were downed due to the severe wind. Monetary damages were estimated.

Tornado in CADDO, OKLAHOMA
From 19-MAY-11 17:09:00 to 19-MAY-11 17:09:00 (CST-6)
Location: FT COBB
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Two off-duty NWS employees observed a brief tornado southeast of Fort Cobb. No known damage occurred.

Thunderstorm Wind in CADDO, OKLAHOMA
From 19-MAY-11 17:20:00 to 19-MAY-11 17:20:00 (CST-6)
Location: FT COBB
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet