Tropical Cyclone Olga set to weaken off Pilbara coast in Western Australia

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Tropical Cyclone Olga is expected to weaken as it passes the Pilbara coast in Western Australia before moving southwest, but two more systems could turn into possible cyclones in coming days.

After the tropical low formed northwest of Broome on Saturday, the Bureau of Meteorology confirmed on Tuesday that Tropical Cyclone Olga was weakening over open water north of the Pilbara coast.

As the system moves the southwest, strong to gale force winds are likely for coastal areas of the west Pilbara on Tuesday night and into Wednesday.

At its peak, Tropical Cyclone Olga was a category 4 system, reaching winds of more than 150 km/h and gusts of over 200 km/h.

There are no major impacts forecast for the Australian coast.

Cyclone watch continues

But the Bureau forecasts two cyclones could form in the coming days in the northern part of Australia.

Tropical Low 12U is forecast to form in the Arafura Sea, near the Top End, later this week.

While it is expected to remain slow moving, authorities warn it could develop further over the coming weekend.

“The risk of the tropical low becoming a tropical cyclone increases from April 15 but remains low,” the Bureau said.

Meanwhile, another tropical low, known as 13U, could also develop along a trough in the far northern Coral Sea, near Louisiade Archipelago, Papua New Guinea.

The Bureau warns that if it forms, it is likely to initially move south and interact with a trough system midweek.

“This low may quickly weaken as it interacts with the trough, however, there is a very small chance that 13U may strengthen and develop into a tropical cyclone” the Bureau said.

“The movement of the system is highly uncertain, but a track to the Far North Queensland Coast is possible.

Meanwhile, WA recorded the fourth wettest March on record, with rainfall reaching 167 per cent above average.

However, some areas of WA recorded below average rainfall, including Cape Leeuwin in the southwest seeing its equal lowest March rainfall on record.

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