Wild weather continues to lash half of Australia, as flood warnings remain in place

Wild weather has pummelled half the country, with thunderstorms bringing strong winds, heavy rain and flooding to Queensland, New South Wales, Victoria and South Australia.

Emergency crews have been kept busy assisting with flood rescues and cleaning up damage to homes.

The weather system is hovering over south-east New South Wales, and is likely to bring rain until late tomorrow.

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Flood warnings remain in several states after a downpour left a trail of destruction.

This includes South Australia, Queensland, New South Wales and Victoria.

New South Wales is bearing the brunt of the weather system, with parts of the state copping almost 100 millimetres of rain in the last 24-hours

Singleton in the state's Hunter region is among the areas affected by flooding.

There are several road closures across the Upper Hunter in order to divert drivers away from floodwaters.

However, some motorists did not heed the warnings from the emergency services.

NBN News journalist Lauren Kempe said State Emergency Service (SES) volunteers rescued two motorists who were stuck in floodwaters.

Two cars are still emerged in floodwaters, with only their roof racks visible.

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"They're warning drivers to be careful about situations just like this," Kempe said.

"But they're also wanting farmers to prepare their livestock and secure any loose equipment they have lying around.

"Any more rain over the coming days could see the water levels here rise by as much as two to three meters above normal flows."

In the NSW Central West city of Bathurst, some roads are looking more like rivers.

WIN News reporter Olivana Lathouris said SES volunteers believe water levels are unlikely to drop to a safe level for at least 24 hours.

"There have already been several rescues due to people driving through floodwaters," she said.

Crops and farmland have been inundated with water, as warnings for flooding and road closures remain for the wider region.

Water is also rising in the Queensland town of Dalby, two-and-a-half hours west of Brisbane.

9News reporter Jordan Fabris said several streets are underwater, with water covering roads and bridges.

"It's quite concerning just how quickly the water is rising," he said.

One woman told 9News she has never seen rain this heavy in the town.

"It's good for the farmers, but it's not good for the businesses that need to come into town to work and for the school kids," she said.

One man is choosing to see the lighter side of the flooding.

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"It's pretty good because now I've got a $50,000 property increase with water views from my loungeroom, cheering," one man said.

Queensland Fire and Emergency Services (QFES) Assistant Commissioner John Cawcutt told Today this morning his team has already fielded more than 100 calls for help.

"Last night it was quite busy," Mr Cawcutt said.

"We had over 100 calls for assistance that our State Emergency Service volunteers were out, mainly to do with damage to walls, roofs and ceilings and water inundation.

"Plus we had a number of swift water rescues where people were trapped in cars.

"People are starting to heed the message to avoid floodwater but we're still getting these situations."

The weather system has so far left a trail of destruction in its wake, with Weatherzone yesterday detecting 1.37 million lightning pulses across central and eastern Australia.

A long line of thunderstorms also formed stretching 2500 kilometres across the Northern Territory's Top End and southeast Queensland, according to Weatherzone.

With more rain expected, Mr Cawcutt urged residents in Queensland's south to take care.

"Into the weekend (rain) will start to ease but it's really important for everybody to remember that even though the rain may stop, the floods and creeks and estuaries will continue to rise.

"The risk and hazards of flooding and swiftwater hazard will continue for a number of days."

In the outback Queensland town of Roma, residents were hit with torrential rain, hail and even cyclonic winds, forcing families to hide inside their homes.

One home had its roof torn off.

A road on the outskirts of Stanthorpe in Queensland completely washed away in one torrent, reminding motorists of the dangers of driving in floodwaters.

South Australia was also caught in the eye of the storm, with gale force winds of up to 70km/h lashing Adelaide.

The cyclonic winds blacked out Adelaide's city causing major peak hour delays.