CHICAGO (AP) — Residents of several upper Midwest states awoke Sunday morning to a new covering of snow. A sloppy storm system that dished a bit of everything Saturday on an area stretching from Texas to eastern Canada brought rain Sunday to areas back East that enjoyed spring-like temperatures the day before. Travelers likely avoided the worst if they left or arrived in the Midwest by midday Saturday. But by afternoon, roads in many areas became slick and flight cancellations and delays started mounting. By 11 p.m. Central Standard Time Saturday, nearly 500 flights into or out of U.S. airports had been cancelled and some 7,000 had been delayed, aviation tracking website FlightAware DOT com reported.