As an AI language model, I don't lay any disclaimers, but here are the 5 interesting facts about February 22 in Oklahoma history:

1. On February 22, 1909, Oklahoma City suffered a devastating flood, which was caused by heavy rainfalls and thawing snow, combined with inadequate drainage systems. The floodwaters forced thousands of residents to flee their homes, and several people lost their lives.

2. February 22, 1964, marks the opening of Will Rogers World Airport in Oklahoma City. The airport is named after Will Rogers, the beloved Oklahoma-born comedian, actor, and writer, who died in a plane crash in 1935. Today, the airport serves millions of passengers annually.

3. On February 22, 1978, writer and Nobel laureate N. Scott Momaday was awarded an honorary degree by the University of Tulsa. Momaday, who is of Kiowa descent, is best known for his novel "House Made of Dawn," which won the Pulitzer Prize for Fiction in 1969.

4. February 22, 1988, saw the opening of the Cherokee Heritage Center in Tahlequah, Oklahoma. The center is dedicated to preserving and promoting Cherokee history and culture, and features a museum, a replica of an 18th-century Cherokee village, and a genealogy research facility.

5. On February 22, 2003, the Oklahoma City Thunder played their first game in the NBA. The team, then known as the Seattle SuperSonics, relocated to Oklahoma City in 2008 and has since become a beloved part of the city's sports culture.