Fairfax Media Network

Agriculture Weather


NINO3.4 Index

  • location
  • Aus

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.

Southern Oscillation Index

SOI

Nino3.4 Index

Nino3.4
Display Your Local Weather

Weather News

Rain flows off Uluru after burst of wet weather in Central Australia

15:21 EST

Rain has been filmed streaming down Uluru after another burst of wet weather in what has proved to be a damp year for Central Australia.

Flooding to end Victoria's wet winter

13:09 EST

A band of rain sweeping over Victoria may cause flooding in the state's north and northeast in the next 24 hours.

Wet winter almost over for Tasmania

11:25 EST

Parts of northern Tasmania are having one of the wettest winters on record, but it isn't over yet.