Storms that killed at least 22 people in the Southeast, piling fresh misery atop a pandemic, spread across the eastern United States on Monday, leaving more than 1 million homes and businesses without power amid floods and mudslides.

In Alabama, people seeking shelter from tornadoes huddled in community shelters, protective masks covering their faces to guard against the new coronavirus. A twister demolished a Mississippi home save for a concrete room where a married couple and their children survived unharmed, but 11 others died in the state.