Seroja is expected to bring widespread effects throughout the region on Sunday evenings, local time and overnight, as it progresses southeast, on land.
Just a few days ago, the same cyclone wreaked havoc on Indonesia. Strong winds and heavy rains triggered flash floods and landslides.
Seroja had early Sunday winds around 110 km / h, which equates to a peak tropical storm in the Atlantic Ocean. The storm is expected to intensify as it accelerates toward the coast and could reach 120 km / h (75 mph), which is equivalent to a minimum Category 1 hurricane in the Atlantic.
The Australian Bureau of Meteorology (BOM) has issued a hurricane wind warning for the Gascoyne coast. Storm wind warnings were issued for the Ningaloo Coast and Geraldton Coast.
Residents along the west coast should also be prepared for dangerous surfaces, coastal erosion and storms.
It has been more than five years since this area of Western Australia had the impact of a tropical system
In 2015, tropical cyclone Olwyn brought heavy rains and strong winds to many of the same areas that are expected to see impacts from the Seroja.