Australians are bracing themselves for a wet and windy summer for the second consecutive year as a la Niña weather event forms in the Pacific, meteorologists said on Tuesday.
‘The current model outlooks suggest this La Niña will persist until the late southern hemisphere summer or early autumn 2022,’, the bureau said, extending the longevity of the event from previous forecasts saying it would start unravelling in late January.
Earlier this month the BoM issued a warning for an La Nina event this summer, meaning that there is a 70 percent likelihood La Nina will form in the months ahead and produce cool, wet weather.
Andrew Watkins, the bureau’s head of operational climate services, said La Niña would also heighten the chances of cooler than mean day temperatures for much of Australia.
With the city’s main Warragamba Dam already 99.2 per cent full, some weather experts are increasingly worried about increased flood danger this summer.
The Bureau has declared that a #LaNiña has developed in the tropical Pacific. Typically during La Niña, there is above average rainfall for eastern, northern and central parts of Australia. pic.twitter.com/4KJeKsVI6A
— Bureau of Meteorology, Australia (@BOM_au) November 23, 2021
Rainfall overnight has been adding to a wet #NSW landscape. This map shows blue for areas above average moisture in the soil, with large parts of the state very much above average. https://t.co/XqKu1oipAT pic.twitter.com/tHWnUoZJyZ
— Bureau of Meteorology, New South Wales (@BOM_NSW) November 22, 2021
#BREAKING – #LaNina has just been officially declared by the @bom_au and Australia is already feeling its impacts. Widespread rain will fall over already flooded areas of eastern Australia later this week. More wet and story weather is on the way this summer. pic.twitter.com/nCmdQqUIOJ
— Ben Domensino (@Ben_Domensino) November 23, 2021