Record-breaking La Niña events
La Niña events greatly influence Australia’s climate.
The 2010–11 and 2011–12 La Niña events were two of the most significant in Australia’s recorded meteorological history.
This publication explores the ‘story’ and ‘background’ of these La Niña events. The ‘story’ section follows the evolution of these extraordinary events and their widespread impacts on the weather of Australia during 2010 through 2012. The ‘background’ section gives an overview of the physical processes driving La Niña and El Niño events, and outlines the ways in which these events typically alter weather in Australia.