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

Adelaide weather: Heavy rain forecast to drench city and Hills

15:02 EST

BSES and weather bureau officials are due to meet today to prepare for heavy rain forecast for later this week across Adelaide and the Adelaide Hills.

NSW weather: Premier Mike Baird visits Forbes and warns of further flooding

14:47 EST

New South Wales Premier Mike Baird has toured the flood-hit town of Forbes, in the state's central west, where he has thanked State Emergency Service (SES) volunteers for their efforts.

Wild end to September looms

14:03 EST

It has been already a big month of weather across southern and eastern Australia, although the worst is yet to come for some areas.