Understanding tropical cyclones
- Tropical cyclones threaten northern Australia every year. Recent Australian flooding and cyclonic events can be largely explained by a strong La Niña. However, sea surface temperatures off the northern Australian coast in 2011 were at or near record levels. The extremely high sea surface temperatures are part of a significant warming of the oceans that has been observed in the past 50 years. These pages provide some information about the causes, occurrence and impacts of tropical cyclones.