The storm surge has been made up of a mix of strong winds, heavy rain, flooding and even tornadoes.
The sheriffs office from nearby Houston County told KLTV that one woman was found dead near her home on Highway 21 West.
Deaths were reported across Mississippi, Texas and Louisiana.
A "line of strong thunderstorms" was expected to enter Western New York around 7:30 p.m.
Two children, ages 3 and 8, were killed in eastern Texas when a tree fell on the auto in which they were traveling.
The Storm Prediction Center has placed most of the state, including central Maryland, under an enhanced risk for severe storms.
Tornadoes kill at least three children as massive storm sweeps U.S
Damage from that first round of storms included reports of trees down in Gwinnett, Walton, Paulding, Butts and Lamar counties. The National Weather Service was sending a survey team to Alto on Sunday to confirm if the storm was, indeed, a tornado.
A MS man, identified as 95-year-old Roy Ratliff died on Saturday when a tornado caused a tree to fall onto his home, Monroe County Coroner Alan Gurley said. "There are a few tornado warnings and heavy thunderstorm warnings", Oravec said.
Authorities say at least 11 tornadoes touched down in three states before the storm began moving towards the East Coast.
On Monday, the storm system moved east, causing travel delays in New York, New Jersey and Pennsylvania. As always, the First Alert weather Team is watching and providing updates on the weather.
The roof of a hotel in New Albany, Mississippi, was damaged, although the cause was unclear.
The tornado threat will be lower by then, but damaging winds could still present hazardous conditions. Franklin is located about 125 miles (200 kilometers) south of Dallas. The parents in the front seats were not hurt.
The severe weather threat Saturday and Sunday placed almost 100 million Americans at risk of risky storms, tornadoes, hail and severe wind gusts, CNN Meteorologist Haley Brink said.
This story has been corrected to show Hamilton, Mississippi is about 140 miles southwest of Memphis, Tennessee, not 60 miles.