Authorities are still searching for victims and the number of fatalities could rise, authorities said. Storms continue to the northeast Sunday.

At least 21 people were killed and more than 100 injured over the weekend after powerful storms ripped through Texas, Oklahoma, Arkansas and Kentucky, destroying several homes and knocking out power for nearly a quarter of a million homes and businesses.

By Maria Caspani (Reuters) -Tornado-spawning thunderstorms swept across parts of the central United States, killing at least 13 people, ravaging communities and knocking out power to hundreds of thousands of homes as forecasters warned of more severe weather over the Memorial Day holiday weekend.

At least 11 people are dead after tornadoes ravaged parts of Texas, Arkansas, and Oklahoma Saturday night and into Sunday morning. Hundreds more were injured, and the threat of severe weather continued into Memorial Day.

Powerful storms and possible tornadoes pummeled parts of Texas, Kentucky, Oklahoma and Arkansas on Saturday night, killing at least 15 people, damaging homes and leaving hundreds of thousands without power.