Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 90,388 24,164,156 Chicago, IL...Detroit, MI...Milwaukee, WI...Madison, WI...Grand Rapids, MI...
SLIGHT 84,997 5,909,443 Toledo, OH...Fort Wayne, IN...Joliet, IL...Cedar Rapids, IA...Peoria, IL...
MARGINAL 159,677 16,318,797 Indianapolis, IN...Cleveland, OH...Omaha, NE...Minneapolis, MN...Buffalo, NY...