As many as 13 million people remain without power in Florida as the state begins to survey the widespread damage caused by Hurricane Irma. At least 11 people died on the mainland U.S. from the hurricane. Authorities say some parts of the Florida Keys may be inaccessible for weeks. The U.S. military is now helping evacuate some Florida Keys residents who did not leave before the storm. Jacksonville experienced its worst flooding since 1864.

The storm also caused destruction when it swept across Georgia and South Carolina on Monday. In Puerto Rico, hundreds of thousands of people remain without power. Authorities have warned parts of Puerto Rico could be without electricity for up to six months.

The head of FEMA, Brock Long, announced this morning he’s heading to Puerto Rico and the U.S. Virgin Islands today. The death toll from the storm also rose in the Caribbean, where at least 34 people are confirmed dead. Ten people died on Cuba, where Irma hit the northern coast as a Category 5 storm. It was the deadliest hurricane in Cuba since 2005. We’ll have more on Hurricane Irma after headlines.