Answer: The compact and intense hurricane caused catastrophic damage in the upper Florida Keys, as a storm surge of approximately 18 to 20 feet (5.5 to 6.1 m) swept over the low-lying islands. The hurricane's strong winds and the surge destroyed nearly all the structures between Tavernier and Marathon.
Explanation: Hurricane Irma struck the Florida Keys on Sept. 10, 2017 as a category 4 storm with maximum sustained winds of 132 mph and storm surge up to 8 feet in the hardest-hit areas in the Lower and Middle Keys.