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
08:10 CST
27°C
34°C
Mostly sunny
Weather News
BOM warns cyclone expected to form from tropical low over Gulf of Carpentaria
09:03 EDT
There is a high chance a tropical low that has been threatening for days to intensify into a cyclone in the Gulf of Carpentaria will finally do so today, the Bureau of Meteorology has said.
NSW emergency service cranks up campaign to stop people driving into floodwater
08:44 EDT
Emergency services are frustrated by people making bad decisions when faced with floodwater, as recent studies on flood deaths show young men and children are the most at-risk of dying.
NSW weather: Storm hits Hunter and Central Coast, BOM predicts heavy rainfall and winds
00:06 EDT
Severe thunderstorms that ravaged the Hunter region and the Central Coast of New South Wales are over, the Bureau of Meteorology says, but Ausgrid and SES volunteers are still working to repair the damage.
