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Sydney Set to Break Rainfall Record as Australia Braces for More Floods

Sydney is set to break its record for most rainfall in a year as authorities brace for major floods in Australia's east, with more heavy downpours expected to fall over the next three days.

By Thursday morning, Sydney had received 2,157 mm (85 inches) of rain in 2022, just shy of the record 2,194 mm set in 1950, official data showed.

"That record is likely to fall late Friday night and into Saturday," Bureau of Meteorology (BoM) forecaster Jonathan How told Australian Broadcasting Corp. television. It is only the fifth time the country's largest city has topped 2,000 mm in a year since record-keeping began in 1858.

Australia's east coast has been in the grip of a multiyear rain event because of the La Nina weather phenomenon, typically associated with increased rainfall, that has caused floods in Sydney suburbs three times in the past two years and forced tens of thousands to flee their homes.

With a wild weather system expected to dump heavy rains through the weekend across a wide swath of Australia's east, authorities warned Sydney residents to watch for flash flooding and stay away from flooded roads.

Many dams and rivers are already at capacity. The New South Wales state government has committed to raising the height of the wall at Sydney's Warragamba Dam, which supplies 80% of the city's water, to help prevent floods.

More downpours are forecast for the rest of 2022 because of the rare occurrence of a third straight La Nina weather event.

"Heading into late spring and summer, we're still in this active La Nina period so we can expect more and more rainfall, and that does increase the risk of flooding," BoM's How said.

Some of the state's rural inland towns have already flooded, with television footage showing residents moving farm animals to higher ground and damaged roads.

New South Wales emergency crews said there were 47 flood warnings in place across the state, with moderate flooding expected in parts of Sydney on Saturday.

The situation will only get more dangerous over the next few weeks, emergency services spokesperson Scott McLennan said.

"Are we at the worst? We don't know, but we do know that there is more water coming," McLennan told the Australian Broadcasting Corp.