"La Nina is likely to cool the tropical Pacific in coming months, a phenomenon which usually causes stronger monsoons across Asia and eastern Australia, the World Meteorological Organization (WMO) said on Tuesday.
The weather condition also promotes the development of storms including hurricanes in the tropical Atlantic, it said.
El Nino, the opposite phenomenon which warms the sea, rapidly dissipated in early May after prevailing since late 2009. This has led to the current situation, bordering on a weak La Nina event in the tropical Pacific, according to the United Nations agency."
Stephanie Nebehay reports for Reuters July 7, 2010.