Categorical Graphic Day 3 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area SLIGHT 148,871 7,434,876 Fort Worth, TX...Oklahoma City, OK...Arlington, TX...Wichita, KS...Grand Prairie, TX... MARGINAL 141,343 12,151,114 San Antonio, TX...Dallas, TX...Austin, TX...Omaha, NE...Tulsa, OK... Probabilistic Graphic Probability of severe weather within 25 miles of a point. Hatched Area: 10% or greater probability of significant severe within 25 miles of a point. Day 3 Prob. Risk Area (sq.