All Actuaries Summit 2026 Program
The program has been designed for two-day attendance: one day focused on your practice area and one day for cross-practice opportunities.
These heightened index values are a potential result of severe Tropical Cyclone Narelle. This made landfall as a Category 4 System on the North Queensland coast before making its way across northern Australia and eventually into Western Australia. Narelle became only the second system on record to make landfall as a severe tropical cyclone (Category 3 or stronger) across all three of Queensland, Northern Territory and Western Australia since records began in 1980-81 [1] .
Tropical Cyclones can elevate sea levels through a combination of low atmospheric pressure, strong surface winds and storm surge [2] . Beyond cyclonic activity, persistently warm sea surface temperatures may also have contributed to the high sea levels seen this season. Sea surface temperatures remain above average around most of Australia, and global sea surface temperatures have been described as exceptionally warm [3] . Warmer water expands in volume through thermal expansion, directly contributing to elevated sea levels.
[1] Bureau of Meteorology. (2026, March 24). Severe Tropical Cyclone Narelle's journey across northern Australia. http://www.bom.gov.au/news-and-media/severe-tropical-cyclone-narelles-journey-across-northern-australia
[2] Bureau of Meteorology. (2017, May 24). Tropical cyclones at sea: The ocean below the storm [Blog post]. http://media.bom.gov.au/social/blog/1381/tropical-cyclones-at-sea-the-ocean-below-the-storm/
