1. On August 11, 1955, the town of Foss was devastated by a tornado, killing three people and injuring over 30. The tornado caused extensive damage to homes and businesses in the area.

2. August 11, 1984 marks the date when Oklahoma native Bill Pickett was inducted into the ProRodeo Hall of Fame. Pickett is credited with inventing bulldogging, a rodeo event where a rider on horseback chases a steer, jumps off the horse, and wrestles the steer to the ground.

3. In 1999, August 11 was observed as 'Oklahoma Centennial Day' in honor of the hundredth anniversary of the state's admission to the United States.

4. On August 11, 1972, a group of prisoners at the Oklahoma State Penitentiary in McAlester staged a riot that lasted for several days. The riot resulted in the deaths of three inmates and two guards, as well as extensive damage to the facility.

5. August 11, 2014 was the date that Oklahoma City Thunder player Kevin Durant donated $1 million to the American Red Cross for tornado relief efforts in his home state. The donation came after a series of tornadoes swept through Oklahoma in May of that year, causing widespread destruction and loss of life.