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.

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Queensland flood devastation brings strangers together to help bury thousands of animals

16:10 EDT

A band of friends have travelled hundreds of kilometres into the epicentre of the flood disaster to do the job no one else wants to do — digging mass graves for thousands of dead cattle and sheep.

Cyclone Oma to bring gale-force winds but may not cross Queensland coast, BOM says

15:54 EDT

A cyclone watch has been issued for a large stretch of the east coast from Bundaberg in Queensland to Ballina in New South Wales.

Ranges dividing rainfall in NSW

13:51 EDT

Eastern NSW will experience rain each day during the next week, although the state's parched west looks to miss out once again.