Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
ENHANCED 119,376 15,112,243 Chicago, IL...Aurora, IL...Rockford, IL...Naperville, IL...Joliet, IL...
SLIGHT 172,696 14,219,376 Milwaukee, WI...Minneapolis, MN...St. Paul, MN...Fort Wayne, IN...Madison, WI...
MARGINAL 260,167 20,309,449 Indianapolis, IN...Columbus, OH...Omaha, NE...Toledo, OH...Cincinnati, OH...