Fairfax Media Network

NINO3.4 Index

  • index
  • SOI
  • NINO3.4

The NINO3.4 index is one of several El Niño/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 Niño 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 Niño or La Niña event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niño or -0.4°C for La Niña for at least 6 consecutive months.

Display Your Local Weather

Weather News

Drought worries grow in Victoria, South Australia with some areas having lowest rainfall on record

17:22 EST

Rainfall totals are the lowest on record over the past year for parts of western Victoria and south-eastern South Australia, weather forecasters are warning.

Agriculture Minister Barnaby Joyce 'takes on board' concern that farmers are struggling to access drought loans

15:53 EST

Agriculture Minister Barnaby Joyce has indicated he might be prepared to consider changes to improve the Federal Government's concessional loans scheme for drought-hit farmers.

Labor, Greens slam Agriculture White Paper for lack of strategic vision or climate change consideration

14:44 EST

Prime Minister Tony Abbott says his government "wants to back people who are prepared to back themselves", and that a newly released vision for Australian agriculture will do just that.