00:00 is midnight, 06:00 is 6am, 12:00 is noon and 18:00 is 6pm. Sea Level Observed sea levels are in metres above Tide Gauge Zero (e.g. 1.205 metres) AHD Australian Height Datum in metres above tide ...
Total wave height, also known as significant wave height, describes the combined height of the sea and the swell that mariners experience on open waters. The Bureau provides model forecasts of total ...