The National Guard patrolled in Tuscaloosa, Ala., while the South cleaned up Monday from a barrage of nearly two dozen late-season tornadoes and storms that killed at least two people and damaged more than 150 homes.

The same storm system carried high wind and heavy rain to parts of Ohio and Pennsylvania on Sunday, ripping off the roof of an empty school in southwestern Pennsylvania and toppling a 75-foot Christmas tree in Pittsburgh.It later became the first big snowstorm of the season to hit Maine, dumping sleet and nearly a foot of snow that was blamed for more than 100 traffic accidents, with two fatalities. Caribou recorded 10 inches of snow.

Twisters skipped across Arkansas, Missisippi and Alabama, uprooting trees, damaging homes and downing power lines this weekend.

The tornadoes struck unusally late in the year, said Harry Gordon of the National Weather Service's Severe Storms Center in Kansas City, Mo.

One tornado slammed through a three-mile area near the small northeast Mississippi town of Nettleton, snapping the tops off trees before dipping into a mobile home park and running along a string of hills and valleys.

Two people in mobile homes - a 37-year-old man and the 9-month-old boy - were found dead Sunday after the tornado hit. Nine others were injured, including one hospitalized in critical and one in serious condition.

Ten houses and two businesses were destroyed and 24 homes were damaged, officials said.

"It's terrible," said Gov. Ray Mabus, who toured the area Sunday. "There's nothing that was left standing much in the path of the storm."

Tornadoes also were reported in the Mississippi counties of Simpson, Bolivar, Sunflower and Leake.