Two small Western Australian towns suffered "widespread damage" when Cyclone Seroja struck part of the country that rarely experiences tropical storms, emergency services said Monday.
The storm, which devastated parts of Indonesia and Timor Leste last week, brought lashing rain and winds of up to 170 kilometers per hour (105 mph) to areas officials said had not seen a tropical cyclone in "decades".
Public broadcaster ABC reported 70 percent of structures in Kalbarri -- home to about 1,500 people -- had been damaged.
Local media images showed homes with their roofs ripped off and debris scattered across streets.
In Northampton, a town of less than 1,000 people about an hour's drive south, there was also "widespread damage", Western Australia's emergency services department said.
"Crews are still assessing the damage and it is not currently safe to go outside because of hazards," a spokeswoman told AFP.
There were no reports of injuries or deaths overnight, she added.
Cyclone Seroja made landfall as a category 3 storm late Sunday, before crossing the continent's southwest and being downgraded to a tropical low Monday morning.
Tens of thousands of homes in Western Australia's Mid West region were left without power and a historic mile-long jetty in the town of Carnarvon was also destroyed.
The Bureau of Meteorology said it was the first cyclone to hit some affected areas since 1956.
Cyclone Seroja last week left more than 200 people dead in Indonesia and neighboring Timor Leste, while thousands more were forced to flee their homes.