The Australian Bureau of Meteorology says the central Pacific Ocean saw continued cooling, which is consistent with a developing La Nina event. While the U.S. Climate Prediction Center says La Nina has returned, the Australian bureau says it expects La Nina to develop by the end of the year.
"If a La Nina does form, current indicators are that it will be weaker than the strong 2010-11 event," says the Aussie scientists. "La Nina events raise the odds of above average rainfall across the north and east of the country, but don't guarantee it."
Juli says: It is typical to see La Nina redevelop after a strong La Nina event ends, such as the one seen earlier this year. La Nina is worth watching, as it's associated with a wide range of global weather events, including dryness in the U.S. Southern Plains.