Perth residents have been warned to prepare for dangerous weather conditions after severe thunderstorms and heavy rainfall prompted flash flood warnings across parts of the metropolitan area. Emergency authorities and the Bureau of Meteorology issued alerts as a powerful weather system moved across Western Australia, bringing intense rainfall, lightning, gusty winds and the risk of localised flooding.

The warning covered several Perth metropolitan districts, including areas such as Armadale, Fremantle, Kalamunda and Rockingham. Meteorologists warned that thunderstorms embedded within a passing cold front had the potential to produce heavy rainfall over short periods, increasing the risk of flash flooding on roads, in low-lying areas and near stormwater drainage systems.

Weather experts explained that the system was being driven by a strong cold front crossing the southwest of Western Australia. As the front interacted with moisture-rich air, it generated widespread showers and isolated thunderstorms capable of delivering substantial rainfall within a relatively short time frame. Forecasts indicated that some Perth suburbs could receive more than 25 millimetres of rain, with higher totals possible beneath stronger storm cells.

Emergency WA advised residents to stay indoors where possible, avoid unnecessary travel and remain clear of flooded roads and waterways. Authorities stressed that even shallow floodwaters can pose significant risks to motorists and pedestrians. Drivers were encouraged to slow down, use headlights in poor visibility and avoid attempting to cross flooded sections of road.

The severe weather follows a period of active winter conditions across Western Australia. Earlier storms during the season caused widespread disruption, including fallen trees, power outages and flooding in several communities. Emergency services have responded to numerous requests for assistance during recent weather events, highlighting the impact that intense winter storms can have on infrastructure and transport networks.

Rainfall measurements recorded during previous storms demonstrated the intensity of the weather system. In some locations, more than 25 millimetres of rain fell within an hour, while other areas experienced significant downpours over even shorter periods. Meteorologists noted that similar rainfall rates could quickly overwhelm drainage systems and create hazardous conditions across urban areas.

Authorities also warned of lightning strikes and strong wind gusts associated with the thunderstorms. Residents were advised to secure loose outdoor items, stay away from trees and power lines, and unplug electrical appliances during periods of intense lightning activity. Boaters, surfers and swimmers were urged to leave the water until conditions improved.

While conditions were expected to gradually ease as the weather system moved east, forecasters said additional showers could continue across parts of Perth and the southwest. Emergency agencies encouraged residents to monitor official warnings and weather updates as conditions could change rapidly throughout the day.