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

Flooding forecast for Adelaide Hills as sandbags are offered to residents

11:40 EST

Adelaide is poised to smash its May rainfall average as the city braces for heavy rain amid warnings of localised flash flooding.

Youth, passion and nostalgia see sheep return to remote Boulia property

10:34 EST

While many are struggling to stay in the sheep industry, one grazier's passion for sheep and wool is seeing him get back into it.

Winter nears as Victoria hit with rain, snow in Alpine areas

19:14 EST

Melbourne has had its coldest day since last September, with heavy rain and flurries in Alpine areas.