The strong winds knocked down utility poles, causing widespread power outage and a telecommunications blackout. At one point, an estimated 25,000 telephones were knocked out of service, with half of the central telephone exchange operating on emergency backup power. Some transformers that were blown down sparked localized fires. One person was killed after being electrocuted by a fallen power line. The blackouts cut electric service to 80 percent of customers in the Miami and Fort Lauderdale areas. House trailers were smashed by flying debris in the same areas. Several roads were blocked by debris thrown by the wind. U.S. Highway 1 in Florida was cut off by fallen telephone poles, preventing land access from the mainland to the Florida Keys. Similarly, numerous portions of the Tamiami Trail were blocked by fallen trees. A person was killed after a prostrated tree fell, crushing the individual. At the Miami International Airport, two twin-engine cargo craft were blown off the airport's perimeter. Heavy agricultural losses resulted from the strong winds as well. Approximately 25 to 50 percent of Florida's citrus crop was damaged after being blown down by strong winds. In addition, 90 percent of Dade and Broward counties' avocado crop, valued at $2 million, was destroyed.