Technical bulletin details (PDF) (Please note the minor changes to the technical bulletin that will take effect from 1 October 2013. )
The Tropical Cyclone Technical Bulletin is a formatted text product that provides technical details about the cyclone.
It is issued once every 6 hours during the life of the cyclone and appears on the Bureau of Meteorology Web Site. As this is a technical bulletin - there will be some data and comments of a scientific nature that would not be expected to be understood by all readers.
Note that this product is not issued as often as other cyclone products, and should not be relied on for guidance to those affected by the cyclone.