Seasonal Forecast of tropical cyclone activity
in the Australian region

What's new

The Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC) at City University of Hong Kong has embarked on the development of real-time predictions of the annual number of tropical cyclones (TCs) affecting the Australian region (90°E-160°E, 40°S-0°N) (NA) and its subregion (western Australian region, 90°E-135°E, 40°S-0°N) (NWA).  Hindcasts for the period of 1983-2008 have shown that the predictions are mostly correct within the error bars. 

Australian Region

Australian region

These are all statistical predictions with predictors drawn from a large group of indices that represent the atmospheric and oceanographic conditions during the pre-season.  The most prominent ones include the proxies for the El Niño/Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD).  It should also be noted that predictions for the eastern Australian region are not made at this point because of the difficulty in identifying significant predictors.  Further investigation will be necessary in this area and results will be reported in the future.

Starting from the 2009/10 season, we will attempt to issue real-time forecasts of NA and NWA.  These should be considered as experimental forecasts and verifications will be made after each season.  A more thorough evaluation of the performance of the prediction equation will be made in a few years.

Latest forecast

Predictions of Seasonal Tropical Cyclone Activity in the Australian Region in 2013/14
(Issued on 18 November 2013)

Previous forecasts

Year Forecast Verification
2009/10 November Verification
2010/11 November Verification
2011/12 November Verification
2012/13 November Verification
2013/14 November Verification
2014/15 N/A N/A