The incident, which was caught on video by people standing on a nearby balcony, took place at the Ritz-Carlton Residences in Sunny Isles Beach, Florida.
As wind howls in the background, the two workers can be seen hunkered down, holding on for dear life, as the window washing platform swings 180 degrees in the air before slamming against the building's giant glass windows.
When the platform steadies, one of the workers can be seen moving towards the center of the platform towards his coworker. They can be seen gesturing at each other as the platform sways in the wind.
The person who shot the video said that it had been 'sunny and calm' that afternoon, 'when suddenly without any warning, a fierce storm blew in.'
They said that the workers then spent the next 20 minutes trying to stabilize the platform, before being able to gain control over it and then climbing to safety onto a residence's balcony.
Video below :
