A once-in-five-year storm is forecast to affect parts of Western Australia within the coming hours, with conditions expected to worsen as the system moves toward the Perth area. Multiple outlets report that the coastal town of Lancelin is on high alert, citing significant wave activity that could exceed existing coastal risks. Authorities and forecasters warn that huge swells may breach Lancelin’s already eroded coastline, increasing the likelihood of coastal flooding and damage to shoreline infrastructure. The coverage characterizes the storm as a major weather event, with impacts focused on coastal areas rather than inland locations. The storm’s arrival is described as imminent, and residents in exposed coastal areas are advised to be prepared for hazardous conditions as waves build. While details of rainfall and wind are not included in the provided excerpts, all sources emphasize the same core threat: dangerous, potentially breaching swells along an already weakened stretch of coast. The situation is monitored closely as conditions evolve.