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.
For those seeking the perfect weather for the perfect date this Valentine's weekend, Australian capital cities seem sure to share the love! Brisbane and Darwin will be hot and steamy as per usual, expecting a maximum temperature into the low 30s on both days.
Queensland's first cyclone of the season poses no immediate threat to the coast but may whip up dangerous swells for south-east beaches early next week, the Bureau of Meteorology (BoM) says.
The Cloncurry Shire Council in north-west Queensland has received more than $800,000 in State Government funding to address the town's stormwater drainage issues.