The collapse occurred Saturday morning at the under-construction building at 300 Biscayne Blvd.
During that time, a resident said he heard a loud boom and looked out of the apartment to see the crane falling.
So far no injuries related to the crash have been reported.
One of two dozen construction cranes looming over the skyline in downtown Miami collapsed atop a high-rise in Irma's winds.
Related Image Expand Collapse Watching Irma as it roared through Miami
The storm slammed into Cudjoe Key at about 9 a.m. with maximum sustained winds of 130 miles per hour, according to the National Hurricane Center. There are about 20 to 25 construction cranes in the city, according to city officials. "We will have a crew over to secure the crane as soon as the weather permits".
Alfonso said city officials contacted the management of nearby residential buildings and called residents there by using a reverse 911 system to urge them to stay away from their windows in case shards of the cranes are picked up by the wind. He said videos of the collapse posted on social media showed a luffing crane, which lacks a horizontal arm and does not spin.
County officials had already ordered evacuations Wednesday for Miami Beach and the other barrier islands. The city even welcomed its first hurricane baby, when a mother delivered a girl in her home in Little Haiti with coaching from emergency responders over the phone.
"Overall, we're faring fairly well considering what was coming", he said.
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