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.
Now Temperature
At Darwin Ap
10:50 CST
32°C
25°C
Mostly sunny
Weather News
Rockhampton braces as Fitzroy River heads toward 2011 flood level
10:56 EST
Expected flood levels in the central Queensland city of Rockhampton have been revised down, with the Fitzroy River only expected to reach 9 metres on Wednesday.
Eastern flooding update
10:09 EST
Floodwaters will continue to plague parts of eastern Australia this week in the wake of Tropical Cyclone Debbie.
NSW floods: Murwillumbah family brave deep water to save horse
08:22 EST
Two men who saved a horse from drowning at Murwillumbah have said they thought the animal would die in their arms through the night.
