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ABC News
ABC News
National
weather reporter Tyne Logan

How the record-breaking Tropical Cyclone Ilsa became so strong

The final remnants of the ex-Tropical Cyclone Ilsa have dissipated across the country, with most communities in Western Australia's north-west emerging largely unscathed.  

But the powerful tropical cyclone recorded peak gusts of up to 289 kilometres per hour — becoming so strong that it broke the Bureau of Meteorology's equipment.

The category-five system also set a preliminary Australian record with 10-minute sustained wind speeds of 218kph as it ripped directly over the top of both Rowley Shoals and Bedout Island.

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