BUFFALO, N.Y. — A snowfall that brought huge drifts and closed roads in the Buffalo area finally ended today, yet residents still couldn’t breathe easy, as the looming threat of rain and higher temperatures through the weekend and beyond raised the possibility of floods and more roofs collapsing under the heavy loads.

More than 30 roof collapses, most involving farm and flat-roof buildings, were reported overnight, officials said today, after snow Thursday brought the Buffalo area’s three-day total to an epic 7 feet or more. Little or no snow was expected today, and the forecast called for a chance of rain on Saturday and more on Monday, along with temperatures approaching 60 degrees.

Homeowners and store employees around the region climbed onto roofs Thursday to shovel off the snow and reduce the danger.

“It’s getting heavier,” said Cheektowaga resident Thomas Mudd Jr., who with his wife spent several hours shoveling 4 to 5 feet off their roof. “It’s supposed to warm up and we’re supposed to get rain on the weekend, which will make it even heavier. So I didn’t want my roof collapsing.”

The storms were blamed for at least 12 deaths in western New York, mostly from heart attacks and exposure. The most recent victims were two elderly residents of a nursing home that was evacuated amid concerns of a roof collapse, Deputy Erie County Executive Richard Tobe said.

“No matter how you cut it, this event will end up in the top five for the Lake Erie area,” said National Weather Service Director Louis Uccellini.

More than 50 people were evacuated from several mobile home parks in suburban Cheektowaga and West Seneca because roofs were buckling. Bellevue Fire Department Lt. Timothy Roma said more than a dozen buildings and carports collapsed, as did a metal warehouse operated by a Christmas decorations company, where damage was estimated in the millions.