The winter that won't go away walloped the northern Great Plains and the Midwest with their second snowstorm of the week, and then took aim on eastern states already numb from frigid weather.

At least 64 people have died in weather-related accidents in the last week.

Record-low temperatures for the day were set yesterday in more than a dozen cities, with the mercury dropping in Butte, Mont., to 16 degrees below zero. Great Falls, Mont., and Muskegon, Mich., reported a record 4 degrees; Baltimore 26; Newark, N.J., 23; Cleveland 11; Detroit 11; Toledo, Ohio, 10, and Pittsburgh 14.

The cold air blast from northern Canada dipped farther south than usual because of upper-atmosphere wind patterns, said Jim Behrens of the National Weather Service in Kansas City, Mo. "It's pretty unusual for cold air to come this far out of the north at this time of year," he said.

The storm was expected to reach the Northeast and mid-Atlantic states today, bringing rain and snow but not a blizzard, forecasters said.

Snow fell as far south as Georgia yesterday, with an inch reported at Black Rock Mountain State Park in Rabun County.

A tornado ripped through Sanford, Fla., tearing off roofs and uprooting trees, but no serious injuries were reported. Police warned that looters would be shot on sight.