Winnie was the fourth tropical cyclone of the season to operate in the Northwestern Australian Region. It was a severe cyclone. The minimum pressure during its mature stage was estimated to be 945 hPa with maximum winds of 105 km/h being generated near the centre. The track followed by Winnie is unusual in that it first moved generally eastsoutheastwards until maturity when it began moving southwestward and later southward. Between 21 and 25 March when Winnie was at its peak intensity its movement was very slow and meandering.
For more details see the TC Winnie Report (pdf).