Deadliest hurricanes in US history: Maria, Katrina, Galveston

June 1 marked the start of hurricane season, the six-month period in which strong storms form in warm tropical waters.

At the start of each hurricane season, researchers make predictions about how many severe storms the US is likely see and how strong they might be. This year is expected to be fairly normal, with four to eight hurricanes (defined as a storm with wind speeds of of 74 mph or higher), two to four of which could be category 3 or above (meaning wind speeds of at least 111 mph).

Hopefully, none of these will be on par with the most destructive storms in US history. Here’s what to know about the six deadliest hurricanes the country has ever experienced.