New Bureau of Meteorology (BOM) data suggests this summer could see another La Nina event develop, leading to higher than average rainfall across northern and eastern Australia.
An updated bureau forecast was delivered last week to the Federal and Queensland governments, but will not be released to the public until tomorrow.
Brisbane’s Sunday Mail newspaper says the new forecast indicates that the Southern Oscillation Index, a key climate indicator, has climbed from +6 to +12 in recent weeks, although this is lower than the +25 reading recorded during the La Nina event last year.
The most recent public update from the bureau, released on October 12, says conditions in the tropical Pacific Ocean “are consistent with the early stages of a late-forming La Nina event”.
It adds: “If the current cooling persists, as is expected, then 2011/12 will be recorded as the second La Nina in as many years. Current

