PITTSBURGH -- Snow fell from the Plains across the Midwest on Saturday, accumulating as much as a foot in places, as the second wintry storm in a week barreled through on its way to New England.

Tens of thousands of people still had no electricity since the first storm slammed Oklahoma, Kansas and Missouri earlier in the week. That storm was blamed for at least 38 deaths, mostly in traffic accidents.

Winter storm warnings and watches extended Saturday from Missouri across parts of Illinois, Indiana, Michigan, Ohio, Pennsylvania, New York, Vermont, New Hampshire and Maine, the National Weather Service said. As much as 15 inches of snow was forecast in sections of southern Michigan, with 10 inches possible in Detroit.

Snow started falling early in the afternoon in Pittsburgh, accumulating to about an inch before tapering off. Light rain and freezing rain took over later.

"We'll have little bit of everything before the night is over," said Bill Drzal, a Weather Service meteorologist in Pittsburgh.

Areas to the north and east of the city could see as much as 12 inches through Sunday night, according to the Weather Service.

Residents across New England packed stores to stock up before getting slammed. The winter weather earlier in the week caught many people unaware, stranding commuters and school buses as it made some of the nation's busiest highways impassable.

Concern about the approaching storm also led the University of Connecticut to cancel Sunday's winter commencement ceremony. About 850 undergraduates had expected to receive diplomas Sunday, but school spokesman Richard Veilleux said officials were concerned about the safety of the students and their families and other guests on slippery roads.