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NINO3.4 Index
The NINO3.4 index is one of several El Niņo/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 Niņo 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 Niņo or La Niņa event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niņo or -0.4°C for La Niņa for at least 6 consecutive months.
Southern Oscillation Index
Nino3.4 Index
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Subzero temps spread to Qld, NT
11:24 AEST It was a chilly one overnight in southeastern Australia as you’d expect in the cold dry air in the wake of a cold front, but freezing temps were also recorded in our two northernmost states.
- 13:40 AEST Shiseido Tahiti Surf Pro forecast
- 14:36 AEST Go west. Life is warm there.
- 12:56 AEST Sydney feeling no warmer than 10°C this afternoon
- 15:14 AEST Melbourne freezing, Tassie snowing, Sydney basking
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