The NINO3.4 index is one of several El Niņo/Southern Oscillation (ENSO) indicators based on sea surface temperatures.
NINO3.4 is the average sea surface temperature anomaly in the region bounded by 5°N to 5°S, from 170°W to 120°W. This region has large variability on El Niņo time scales, and is close to the region where changes in local sea-surface temperature are important for shifting the large region of rainfall typically located in the far western Pacific.
An El Niņo or La Niņa event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niņo or -0.4°C for La Niņa for at least 6 consecutive months.
The Bureau of Meteorology has confirmed what many Tasmanians already suspected, it has been the coldest winter in nearly 50 years.
Katter's Australia Party accuses successive governments of neglecting rural and regional Queenslanders
Katter's Australia Party MP Shane Knuth says rural Queenslanders have been "done over" by successive governments.
General rain of between 10 to 40 millimetres throughout most of the state last week has been welcomed by New South Wales grain growers and graziers alike.