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Issued on 23 June 2015 | Product Code IDCKGEWW00

The 2015 El Niño continues to strengthen. Central and eastern tropical Pacific Ocean sea surface temperature indices are more than 1 °C above average for the sixth consecutive week. International climate models surveyed by the Bureau of Meteorology indicate further consolidation is likely. El Niño events typically strengthen during the second half of the year, reaching full strength during late spring or early summer. It is not possible at this stage to determine how strong this El Niño will be.

El Niño is typically associated with below-average winter and spring rainfall over eastern Australia and above-average daytime temperatures over the southern half of the country during the second half of the year. The strength of an El Niño does not always determine the strength of its effects on Australia’s climate. There are examples of weak El Niño events resulting in widespread drought and strong El Niño events with little impact on rainfall.

The Indian Ocean Dipole (IOD) is currently neutral. Of the five international models that provide IOD outlooks, three suggest a positive IOD is likely during the southern spring. A positive IOD is typically associated with reduced winter and spring rainfall over parts of southern and central Australia.

Next update expected on 7 July 2015 |

vía ENSO Wrap-Up.

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