Another potent storm is putting millions in the United States in harm’s way again, just days after a deadly cross-country storm left a trail of destruction in its wake.

Meanwhile, the severe weather threat will linger through Sunday from Florida northward into the upper Ohio River Valley, forecasters warned.

Scattered twisters and storm damage led to the deaths of at least 13 people in Missouri, including a 30-year-old man who along with his dog was found dead from carbon monoxide poisoning after he was using a generator indoors during the storm, authorities said. In Arkansas, officials confirmed three deaths.

Throughout the South and Midwest, residents and work crews were beginning to clean up Monday and survey the destruction after severe weather across seven states kicked up a devastating combination of wildfires,