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
12:40 CST
33°C
26°C
Possible thunderstorm
Weather News
Sydney's neverending heat
14:09 EDT
As school goes back this week the scorching summer-holiday-heat is sticking around.
Wrap up of the Tropical Low
12:31 EDT
A tropical low is now continuing off WA's Pilbara coast and weakening over the Indian Ocean.
WA cyclone: BOM gives Pilbara residents all clear for tropical low
21:44 EDT
People in parts of Western Australia's Pilbara region are given the all clear by the Bureau of Meteorology (BOM) regarding a tropical low that earlier prompted a blue alert.
