Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 55,947 6,837,190 St. Louis, MO...Louisville, KY...Evansville, IN...Columbia, MO...St. Charles, MO...
SLIGHT 278,724 37,991,729 Houston, TX...Jacksonville, FL...New Orleans, LA...Atlanta, GA...Lexington-Fayette, KY...
MARGINAL 144,308 14,631,597 San Antonio, TX...Austin, TX...Charlotte, NC...Nashville, TN...Huntsville, AL...