 As it approached the Yucatán Peninsula , Janet passed over the Swan Islands north of Honduras as a Category 5 hurricane on September 27 . The hurricane caused rough seas , and strong winds uprooted trees and antennas . After gusts exceeded an estimated 100 mph ( 160 km / h ) , officials on the islands took shelter in a Navy seismograph building . Though no deaths were reported , Janet destroyed almost all buildings on the islands . The U.S. Weather Bureau and Civil Aeronautics Authority requested food and supplies for 82 people on the island after the storm passed . 
