Hurricane Irma now a Category 5 -- 7:50am Tuesday update Hurricane Irma grows to powerful Category 5 storm Irma Strengthens To Category 5 Hurricane 5 a.m. Tuesday update: Hurricane Irma's winds increase to 150 mph Hurricane Irma: Florida And Puerto Rico Brace For Storm People preparing for possible impact by Hurricane Irma Irma remains Cat 4, 140 mph, aiming for Florida Tracking Hurricane Irma's storm path Hurricane Hunters Fly Into Irma for First Time Plane flies through Hurricane Irma