MAYFIELD, Ky.—Residents of a Kentucky town devastated by a tornado could be without heat, water, and electricity in chilly temperatures for a long time, the mayor warned Monday, as officials struggled to restore services after a swarm of twisters leveled neighborhoods and killed dozens of people in five states. Authorities are still tallying the devastation from Friday night’s storms, though they believe the death toll will be lower than initially feared since it appeared many more people escaped a candle factory in Mayfield, Kentucky, than first thought. “This is a tough morning … but it’s ok, we’re still going to be all right,” Mayfield Mayor Kathy Stewart O’Nan said on ”CBS Mornings.” But those who survived faced highs in the 50s and a low below freezing Monday without any utilities. “Our infrastructure is so damaged. We have no running water. Our water tower was lost. Our wastewater management was lost, …