Fairfax Media Network

Agriculture Weather


NINO3.4 Index

  • location
  • Aus

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

SOI

Nino3.4 Index

Nino3.4
Display Your Local Weather

Weather News

Spring hayfever season to be worst in years due to winter rain, experts say

13:50 EST

A wet winter is set to give way to a sneezy spring in south-eastern Australia, with this hayfever season predicted to be the worst in years.

NT weather: Spectacular photos capture thick fog blanketing Alice Springs

12:46 EST

Residents of Alice Springs have woken to thick fog blanketing the streets and cloaking the East MacDonnell Ranges.

Spring soaking to follow wet winter

12:43 EST

An impending rain event scheduled for the opening days of spring continues the pattern of wet weather which has gripped eastern Australia during winter.