Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MODERATE 44,282 4,931,334 Indianapolis, IN...Springfield, IL...Peoria, IL...Decatur, IL...Champaign, IL...
SLIGHT 180,177 28,288,728 Chicago, IL...Columbus, OH...Omaha, NE...St. Louis, MO...Cincinnati, OH...