NINO3.4 Index
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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Weather News
East coast sizzler
11:38 EDT
The hottest weather in eight-to-nine months will hit the eastern seaboard during the next week.
Removal of 30-tonne rock at Coogee's Giles Baths may take up to a week
21:21 EDT
A huge sandstone rock weighing as much as a humpback whale is being moved from the Giles Baths at Coogee in a week-long operation, after it shifted 50 metres in wild weather earlier this year.
Stormy afternoon in Queensland
14:16 EDT
Thunderstorms are developing over Queensland this afternoon and they could become severe in the southeast.
