NEW YORK, United States (AP) — State and military police were sent Tuesday to keep people off Buffalo’s snow-choked roads, and officials kept counting fatalities three days after western New York’s deadliest storm in at least two generations.

Even as suburban roads and most major highways in the area reopened, Erie County Executive Mark Poloncarz warned that police would be stationed at entrances to Buffalo and at major intersections because some drivers were flouting a ban on driving within New York’s second-most populous city.

More than 30 people are reported to have died in the region, officials said, including seven storm-related deaths announced Tuesday by Buffalo Mayor Byron Brown’s office. The toll surpasses that of the historic Blizzard of 1977, blamed for killing as many as 29 people in an area known for harsh winter weather.

Greg Monett turned to social media to beg for help shovelling a six-foot (1.8-metre) pile of snow from the end of his Buffalo driveway so he could get dialysis treatment Tuesday.

“This has been a nightmare,” he said in an interview Monday. Power had been out for a time at his family’s home, he said, so relatives ran a gas stove to keep warm, a practice he acknowledged was dangerous.

“We had to do what we had to do,” said Monett, 43. “We would have froze to death in here.”

He ultimately made it to dialysis after climbing through the snow and having neighbours help dig out his buried vehicle, sister Maria Monett said.

The National Weather Service predicted that as much as two inches (2.5 to 5 centimetres) more snow could fall Tuesday in Erie County, which includes Buffalo and its 275,000 residents. County Emergency Services Commissioner Dan Neaverth Jr said officials also were somewhat concerned about the potential for flooding later in the week, when the weather is projected to warm and start melting the snow.

The rest of the United States also was reeling from the ferocious winter storm, with at least an additional two dozen deaths reported in other parts of the country, and power outages in communities from Maine to Washington State.

On the Rosebud Sioux Tribe’s reservation in South Dakota, there were plans to use snowmobiles Tuesday to reach residents after food boxes were delivered by helicopter and trucks over the weekend, the tribe said.

In Buffalo, the dead were found in cars, homes and snowbanks. Some died while shovelling snow, others when emergency crews could not respond in time to medical crises. Poloncarz, a Democrat, called the blizzard “the worst storm probably in our lifetime”, even for an area known for heavy snow. More bodies are expected to be found as the snow is cleared or melts.

The winter blast stranded some people in cars for days, shuttered the city’s airport and left some residents shivering without heat. More than 4,000 homes and businesses were still without power late Tuesday morning.

President Joe Biden offered federal assistance Monday to New York, allowing for reimbursement of some storm-relief efforts. Governor Kathy Hochul toured the aftermath in Buffalo, her hometown, and called the blizzard “one for the ages”. Almost every fire truck in the city became stranded Saturday, she said.

Roughly 3,000 domestic and international US flights were cancelled Tuesday, according to the tracking site FlightAware.