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

Canberra experiences wettest winter in 10 years, coldest nights since 1997

15:52 EST

Canberra has shivered its way through the most cold nights since 1997 and its wettest winter since 2005.

Another ECL for NSW

15:36 EST

It's the weather phrase that makes the coastal dwellers of New South Wales shudder - East Coast Low.

Canberra's cold start to spring

13:35 EST

For most people, spring brings the hope of warm weather.