The sea surface temperature (SST) varies much more slowly than atmospheric temperatures due to the heat capacity of water. As such, the SSTs lag the atmospheric temperatures on a seasonal timescale by about 3 months. The lowest SSTs are usually observed in early Spring and the highest SSTs are observed in early Autumn.
In tropical regions, SSTs greater than 26°C are considered suitable for formation of tropical cyclones.
The data displayed in this map is the weekly average, centred on the date shown.
16:14 EDT At least 350 SES volunteers and 100 firefighters are working in areas of Brisbane hardest hit by Thursday's super cell storm, clearing yards and parks of corrugated iron, roof tiles, broken glass and tying down tarps onto roofs.