This suggests a preference for formation of east coast cyclones between extreme events of the Southern Oscillation Index.

Magnitude can be determined in different ways, such as variations in the Southern Oscillation Index (SOI).

SOI (Southern Oscillation Index)

It also allows estimates of such measures as the North Atlantic Oscillation and Southern Oscillation indices for this period.

With the Southern Oscillation Index firmly established as strongly positive after a couple of years near zero, it was clear that further heavy rain was always imminent.

The strength of the Southern Oscillation is measured by the Southern Oscillation Index (SOI).

The Southern Oscillation Index (SOI) is the difference in sea-level pressure measured at Darwin and Tahiti.

Famous atmospheric anomaly time series are for instance the Southern Oscillation index (SOI) and the North Atlantic oscillation index.

Use the site to watch the ABC's coverage of weather events, follow the seven-day weather synoptic charts, check the current radar, satellite graphics and the movement of the Southern Oscillation index.

Within each outlook factors such as the high values of the Southern Oscillation Index, near average sea surface temperatures and the neutral El Niño-Southern Oscillation conditions were taken into account.

A Southern Oscillation Index (SOI),based on the pressure difference between Tahiti and Darwin, has been formulated by the Bureau of Meteorology (Australia) to measure the strength of the Oscillation.

El Niño and La Niña Ocean Temperature Patterns The Southern Oscillation and its link to the ENSO cycle The Southern Oscillation Index (SOI)