Agriculture Weather


NINO3.4 Index

  • location
  • Aus

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.

Southern Oscillation Index

SOI

Nino3.4 Index

Nino3.4
Display Your Local Weather

Weather News

Tropical Cyclone Esther likely to form this weekend

21:14 EDT

A tropical cyclone is likely to form over the Gulf of Carpentaria this weekend before gaining strength and approaching the coast.

Facebook 'friends' help Luke crowdsource a path across floods to attend his daughter's birth

14:20 EDT

A New South Wales man's desperate journey through the state's flooded north to witness the birth of his daughter has taken the old adage 'it takes a village to raise a child' to the next level.

Popular 1988 hot air balloon challenge from Perth to Sydney might be making a comeback

12:26 EDT

In 1988, the Bicentennial Balloon Challenge saw 78 balloons travel from Perth to Sydney to celebrate 200 years since the landing of the first British settlers.