BOM on La Niña alert as conditions firm for wet end to 2020

Just when 2020 couldn’t get any worse, we’re now being warned Australia is facing an increased risk of above average rain, flooding and the possibility of more cyclones this year.

The Bureau of Meteorology has issued a La Niña alert, with conditions ripening for a very wet spring and summer.

According to BOM, there’s now a 70 per cent chance of a La Niña event happening in coming months.


“The cooling of surface temperatures in the tropical Pacific Ocean and an increase in the strength of the Pacific Trade Winds indicates the chance of La Niña has risen,” BOM  Manager of Climate Operations, Dr Andrew Watkins said.

“When these two changes occur at the same time, at this time of year, we see a greatly increased chance of a La Niña forming and persisting through spring.

“Climate models suggest that further ocean cooling and intensification of Trade Winds may occur over the coming months, which has triggered the Bureau to shift from a La Niña Watch, issued on 26 June, to a La Niña Alert.”

Dr Watkins says a La Niña event would see cooler and cloudier days, above average rainfall, more tropical cyclones and the early onset of the wet season rains in our north.

According to the BOM, a La Niña would likely continue through summer, into next year with an increased risk of severe flooding along the east coast.

The last significant La Niña event was in 2010-11, which was the Australia’s wettest two-year period.

WATCH: The BOM explains what La Niña and El Niño are all about –