Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 59,200 637,762 Abilene, TX...San Angelo, TX...Big Spring, TX...Altus, OK...Pampa, TX...
SLIGHT 72,413 2,786,116 Oklahoma City, OK...Lubbock, TX...Norman, OK...Wichita Falls, TX...Midland, TX...
MARGINAL 223,755 17,051,089 Dallas, TX...Fort Worth, TX...Omaha, NE...Minneapolis, MN...Arlington, TX...