Categorical Graphic Day 2 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area ENHANCED 103,440 4,847,638 Shreveport, LA...Jackson, MS...Tyler, TX...Tuscaloosa, AL...Longview, TX... SLIGHT 117,522 15,073,427 Dallas, TX...Memphis, TN...Arlington, TX...Plano, TX...Birmingham, AL... MARGINAL 154,124 25,098,801 Houston, TX...Fort Worth, TX...Oklahoma City, OK...New Orleans, LA...Atlanta, GA... Probabilistic Tornado Graphic Probability of a tornado within 25 miles of a point.