Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
SLIGHT 131,649 7,067,979 Shreveport, LA...Little Rock, AR...Springfield, MO...Tyler, TX...Fort Smith, AR...
MARGINAL 447,906 34,304,007 Houston, TX...San Antonio, TX...Dallas, TX...Austin, TX...Memphis, TN...