Jason Samenow Greg Porter The Washington Post

Large and extremely powerful, Hurricane Irma is sweeping toward Florida, its rainbands and strong winds slamming the Keys and southern peninsula with hurricane-force winds. The storm, which strengthened to Category 4 intensity early Sunday, is likely to be among the worst hurricanes in the state's history.

Large and extremely powerful, Hurricane Irma is sweeping toward Florida, its rainbands and strong winds slamming the Keys and southern peninsula with hurricane-force winds. The storm, which strengthened to Category 4 intensity early Sunday, is likely to be among the worst hurricanes in the state's history.