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Posted by | January 20, 2015 | GBA News, Weather | No Comments

Latest ENSO Wrap-Up issued 20 January 2015

The latest ENSO Wrap-Up, ENSO Tracker and Climate Model Summary are now available on the Bureau’s website.

Tropical Pacific Ocean moves from El Niño-like to neutral.

Since late 2014, most ENSO indicators have eased back from borderline El Niño levels. As the natural seasonal cycle of ENSO is now entering the decay phase, and models indicate a low chance of an immediate return to El Niño levels, neutral conditions are considered the most likely scenario through into autumn.

Central tropical Pacific Ocean surface temperatures have fallen by around half a degree from their peak of 1.1°C above average in late November. Likewise, the Southern Oscillation Index has weakened to values more consistent with neutral conditions, while recent cloud patterns show little El Niño signature. As all models surveyed by the Bureau favour a continuation of these neutral conditions in the coming months, the immediate threat of El Niño onset appears passed for the 2014–15 cycle. Hence the ENSO Tracker has been reset to NEUTRAL. The Tracker will remain at NEUTRAL unless observations and model outlooks indicate a heightened risk of either La Niña or El Niño developing later this year.

 

ENSO Tracker

Our ENSO Tracker provides
up-to-date information on the likelihood
of an El Niño or La Niña developing.

The status is El Niño NEUTRAL.

Information courtesy of the Bureau of Meteorology.

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