Irma forecast to hit Florida Keys as Category 5 storm Officials caution that Irma is "extremely dangerous," with maximum sustained winds of 155 mph, which are strong enough to uproot trees and bring down power poles. When it's expected to land »

Irma forecast to hit Florida Keys as Category 5 storm Officials caution that Irma is "extremely dangerous," with maximum sustained winds of 155 mph, which are strong enough to uproot trees and bring down power poles. When it's expected to land »