Cyclone Marcia is expected to produce wind gusts up to 90 km per hour, while the more powerful Cyclone Lam was expected to generate winds of up to 130 km per hour.

The worst of the storms are expected to hit the coast early on Friday morning, according to Australia’s Bureau of Meteorology.

Gladstone was reportedly not letting any more ships to load coal for export, and masters of the 13 ships waiting off the port have been told to prepare to evacuate the area.

“Vessels