Australia struck by flooding in Sydney, bushfires in Queensland

Torrential rain and gale force winds lashed Sydney, flooding streets, railway stations and homes, grounding flights and leaving hundreds of people without electricity.

Storm dumps a month's worth of rain in one morning, soaking country's largest city

Ferries and boats pass in front of the Sydney Opera House as strong winds and heavy rain hit the city on Wednesday. (David Gray/Reuters)

Torrential rain and gale force winds lashed Australia's biggest city of Sydney on Wednesday, flooding streets, railway stations and homes, grounding flights and leaving hundreds of people without electricity.

Police called on motorists to stay off the roads. One person was killed in a car crash and two police officers were seriously injured when a tree fell on them as they helped a stranded driver.

Greg Transell, a local office manager, told the Australian Broadcasting Corporation that strong winds caused widespread disruption to the tower block office where he works.

"I started to go upstairs to see if there was any damage, and next minute there was an almighty bang and it ripped panels off the roof in the warehouse," said Transell.

Australia's Bureau of Meteorology (BOM) Sydney got more than 100 millimetres of rain in just a few hours, a level the country's most populous city would normally get through the whole of November.

A woman carrying an umbrella walks past a flooded park in Sydney. (David Gray/Reuters)

"That's the sort of rainfall you'd expect to see once every 100 years," Ann Farrell, the bureau's state manager, told reporters.

The rain offered a welcome respite to farmers who have suffered through a sustained drought in recent months, but it caused major transportation disruptions.

Sydney airport, the country's busiest, said 130 flights had been cancelled or delayed after it was forced to close two of its three runways.

"The storm is pretty intense in and around the airport," Cait Kyann, an airport spokesperson, told Reuters. "We are operating from a single runway, so that means that there are delays and likely some flights will be cancelled."

Power outages

Ausgrid, the country's biggest electricity network, said the storm had cut power to 8,100 customers in Sydney and the Central Coast area to its north.

By late afternoon, 1,700 homes and businesses remained without power, Ausgrid said.

The storm struck only hours before morning rush hour, transforming some streets into fast-flowing rivers and parks into lakes. Several stranded motorists were plucked from rising floodwaters.

"We are asking all road users to reconsider the need to be on the roads throughout what will be a severe rain event," said Michael Corboy, New South Wales state assistant police commissioner.

Brushfires burn in Queensland, which was expected to see temperatures of around 40 C and winds of up to 40 km/h. (QLD Fire and Emergency via Associated Press)

In contrast, in Australia's northern state of Queensland, soaring temperatures near 40 C and strong winds exacerbated major bushfires.

Firefighters have been battling for nearly a week to contain more than 130 fires across Queensland, and 8,000 people were ordered to evacuate the city of Gracemere, about 600 kilometres north of the state capital of Brisbane.

"These are unprecedented conditions," said state Premier Annastacia Palaszczuk. "We have not seen the likes of this."