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

Rivers down and cruises cancelled as Kakadu National Park swelters through one of its driest wet seasons on record

08:21 EDT

The World Heritage-listed Kakadu National Park is suffering one of its driest wet seasons on record.

Perth heatwave putting city's water supplies under pressure

23:43 EDT

As Perth sweats through a severe heatwave, pressure is mounting on the city's dwindling water supplies.

BoM given one day's notice about CSIRO restructure

20:14 EDT

The Bureau of Meteorology (BoM) and the Australian Antarctic Division say they were given just one day's notice about a major CSIRO restructure that could impact joint projects.