Spectacular vision of a twister-like whirlwind that sent a tent swirling into the sky, damaged a roof and forced a group of mates playing golf to take cover in the Northern Territory town of Katherine, has been identified by the Bureau of Meteorology as a rarely seen phenomenon called a gustnado.
"They look a little bit like a dust devil, but they're not," the Bureau of Meteorology's senior meteorologist Sally Cutter said. They are stronger.
