A man swept away by floods in the city’s northwest was rescued by emergency crews, media reported, while television footage showed vehicles struggling to cross waterlogged streets, fallen power lines and trees, and debris floating in rivers.
Residents of a nursing home were evacuated overnight as emergency crews urged the harbor city’s 5 million residents to avoid unnecessary travel and brace for possible evacuations.
“This is a highly dynamic situation. These events are moving exceptionally quickly,” New South Wales emergency services Acting Commissioner Daniel Austin said during a media briefing. “Exceptionally sharp, short bursts of rain” have been creating flash flooding almost every hour, he said.
Sydney has received 1,227 millimeters (48 inches) of rain so far this year, more than its average annual rainfall of 1,213 millimeters. Over the next 24 hours, many coastal towns could get up to 180 millimeters, the Bureau of Meteorology said.
The tourist hotspot of Bondi recorded around 170 millimeters over the 24-hour period to 9 a.m. Thursday, official data showed.
Thousands have been ordered to evacuate their homes while businesses cleared essentials to help mitigate their losses.
“All hands are on deck to try and save some furniture … so we have been pretty busy lifting things up … moving things away, unplugging filters and electricity, and things like that,” Nicola Gilfillan, a cafe owner in southwest Sydney, told ABC television.
Overflow from a fuel pit at a site owned by oil refiner Ampol in Sydney’s south caused oil to mix with flood waters but emergency crews said the spill had been contained and that there was no risk of danger in the area.
A severe weather warning stretched along the south coast of New South Wales over a distance of more than 600 kilometers (373 miles) but conditions are expected to ease from Thursday evening, the weather bureau said.
Australia’s east coast summer has been dominated by the La Nina weather phenomenon, typically associated with increased rainfall, for the second straight year, with most rivers at capacity even before the latest drenching. Warragamba Dam, Sydney’s major water supply, is expected to spill over on Friday, authorities said.
Three intense weather systems in six weeks have pounded eastern Australia, with several parts of northern New South Wales and southeast Queensland clocking record rains and Sydney registering its wettest March on record.
Climate change is also widely believed to be a contributing factor to the severe weather, which has raised questions about how prepared Australia is.
Several towns across northern New South Wales are still battling to clear debris after two devastating floods in March but the latest weather event has smashed the state’s central and southern coast.
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