Ten days after moving from Boston to Sarasota, Florida, Mike Cahill’s family had to brace for catastrophic hurricane conditions for the first time in their lives.

“We just literally came down … and we get the worst hurricane Sarasota has had in 100 years,” Cahill said.

Data shows the Cahills aren’t alone. In the last 10 years, nearly 3 million people have moved to Florida, meaning more people than ever before are at risk when a hurricane or tropical storm hits the state.

When Hurricane Andrew hit Florida in 1992 as a monster Category 5 storm, the state’s population was around 13 million. Since then it’s ballooned to 21.5 million.

Researchers have estimated this week that Hurricane Ian will cause between $20-$70 billion worth of damages.

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Florida is known for its coastal views, and that’s where much of the population growth is happening, said Stephen Strader, a geography professor at Villanova who studies the effects of natural disasters. But the state’s ocean sunsets come at a price, he said.

“In Florida that growing and spreading means … we are putting more people in the path of these tropical storms,” Strader said.

Huge population growth in Florida

The enormous population growth in the Sunshine State has few rivals in the U.S., Strader said, apart from booming cities in the west like Phoenix and Las Vegas.

“It’s its own animal in terms of how its been growing in the last 30 years, really since post-Hurricane Andrew,” Strader said.

When Hurricane Ian made landfall near Cayo Costa, Florida, Wednesday afternoon as a nearly Category 5 storm, about 2.5 million Floridians were under mandatory or voluntary evacuation orders and millions have since lost power.

Three of the coastal counties that felt the full effect of Ian’s landfall rank among Florida’s most populous, census data shows.

Who is moving to Florida?

Florida’s warm weather, beautiful beaches and no state income tax have long been a draw for a wide variety of newcomers, even though it’s commonly thought of as a retirement haven.