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NINO3.4 Index

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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.

Southern Oscillation Index

SOI

Nino3.4 Index

Nino3.4
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Weather News

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Saturday night turned into a real soaker for parts of Queensland and New South Wales, as a low pressure trough moved through.

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Parts of the southeast awoke to thick fog on Sunday morning with visibility dropping below 100 metres in some places.

Severe thunderstorms bring damaging winds and large hail to south-east Queensland

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A "very dangerous" thunderstorm packing giant hail and destructive winds tore through parts of south-east Queensland on Saturday evening, damaging homes and bringing down trees and powerlines.