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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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Man dies in floodwaters north of Townsville

21:35 EDT

A 18-year-old man has died after being swept away in flood-affected waters north of Townsville.

Citizen scientists called on to map extent of drought killing native trees

15:36 EDT

While rain has arrived in some drought-affected areas, it has been too late for many native trees.

Ex-Tropical Cyclone Owen dumps more than half a metre of rain in north Queensland

15:00 EDT

Ex-Tropical Cyclone Owen has dumped "incredible" and "very intense" rain over parts of Queensland's north tropical coast, the Bureau of Meteorology (BOM) says.

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