Hurricane Helene hit Florida as a category 4 storm Thursday night, killing at least 21 people in four states. The storm has caused widespread damage in Florida, and power outages and flooding throughout several states in the south. Helene began as a tropical storm earlier this week, but was upgraded to a category 4 hurricane before it reached the U.S.The storm first made landfall in Florida’s sparsely populated Big Bend region before moving up the Gulf Coast.