Cyclone to wreck WA holidays

Now is the time to reconsider your plans if you are camping in Western Australia’s north-west this weekend as a cyclone and a tropical low are heading for the coast, and could collide in a phenomenon known as the Fujiwhara effect.

“When you have two vortices next to each other they interact with each other … they start to rotate around,” said Bureau of Meteorology duty forecaster Noel Puzey.

“Like two dancers on a dance floor … they can actually bounce off or spin around each other. Eventually, one can dominate and the other one weakens and becomes smaller, or they just move away from each other again and continue on their own independent ways.”

The…