Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 61,235 3,147,051 Oklahoma City, OK...Wichita, KS...Norman, OK...Lawton, OK...Edmond, OK...
MARGINAL 350,559 32,464,584 Houston, TX...San Antonio, TX...Dallas, TX...Austin, TX...Fort Worth, TX...