COLUMBIA, Tenn. (AP) — Forecasters warned a wave of dangerous storms in the U.S. could march through parts of the South early Thursday, after storms a day earlier spawned damaging tornadoes and massive hail, leaving two dead in Tennessee and one dead in North Carolina.

The storms continue an outbreak of torrential rain and tornadoes that has cut across the country this week, from the Plains to the Midwest and now the southeastern U.S. At least four people have died in storms since Monday.

Amid Wednesday’s storms, the National Weather Service continued issuing tornado warnings that stretch past midnight in North Carolina, Alabama, Georgia, Missouri and Kentucky. Parts of Arkansas and Mississippi were also under a tornado watch through the pre-dawn hours.

One storm that rumbled across northeastern Tennessee on Wednesday brought high winds that knocked down power lines and trees. Bob Brooks, the sheriff in Claiborne County about an hour north of Knoxville, said a 22-year-old man was in a car when he was fatally struck by one of the trees.