More than 100,000 people were left without power once the storm hit Texas, Louisiana and Mississippi.
Winds reached 60 miles per hour in Binghamton, the weather service said, as lines of severe thunderstorms rolled into the Northeast Sunday night.
Tornado warnings remained in effect on Sunday for southeastern Alabama's Barbour and Russell counties, Oravec said.
An isolated tornado is also possible, but not likely, forecasters said. A mobile home community was damaged, but no injuries are being reported.
"The severe weather threat should be quickly winding down by late morning", the National Weather Service said. Capt. Alton Lenderman said the parents, who were in the front seats, were not injured.
In Louisiana, Deputy Glenn Springfield of the Ouachita Parish Sheriff's Department said Sunday that two people died in floodwaters Saturday.
The tree "flattened the vehicle like a pancake", said Capt. Alton Lenderman of the Angelina County Sheriff's Office.
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Meteorologist Monique Sellers said they've received reports of downed trees, as well as damage to buildings and a transmission tower.
The death toll rose to eight and dozens more were injured after a wave of suspected tornadoes roared from Texas to New Jersey. At least 11 tornadoes have touched down in three different states as a result of a stronger-than-usual storm system.
But "the storm is so vigorous that tornadoes are still possible after dark", he said.
At least one tornado was reported in southeast Alabama early Sunday, as CNN meteorologist Haley Brink said as many as 90 million people could be threatened by the storms.
"A strip of homes on the other side of town over here are completely gone, just gone, everything is gone", Robertson County Emergency Management Coordinator Billy Huggins told NBC News. We have a lot of flooding.
Storms are expected to move through the Augusta area Sunday afternoon and evening. Tornadoes, damaging winds, and quarter size hail are the primary risks with this storm system.