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
22:50 CST
21°C
34°C
Mostly sunny
Weather News
Hurricane Maria following similar path to Irma
16:32 EST
The second hurricane in a fortnight to affect the Caribbean will cause destructive winds and flooding rain in the coming days.
Turbulent Monday for Victoria and Tasmania
16:24 EST
It was a blustery start to the week in the nation's southeast as a cold front and trailing low pressure system prompted severe weather warnings in multiple states.
Meet the forecasters behind the weather at the BOM in Hobart
12:42 EST
How about that weather, eh? It's the topic for many a socially awkward barbecue or work function, it affects us all in some way every day, but what does it take to forecast the future? Tristan Oakley loved thunderstorms as a kid, and after dabbling in geology at university he realised the skies were more his thing.
