"Several" American warplanes have been destroyed and the US embassy in Kuwait apparently hit by an Iran-led attack.

Emergency services were called to the scene about 10.35am.

Forecasters are watching four tropical lows developing north of the continent that are expected to dump widespread rain later this week, with three of them considered a moderate chance of forming into tropical cyclones.

The lows are developing within a monsoon trough over northern Australia that is likely to bring rain, storms and heavy falls to Queensland's far north and north tropical coast, even pushing back across the Gulf Country.

"We've also got areas of showers and storms continuing across far south-western parts of the state as this low-pressure trough moves through," Bureau of Meteorology senior meteorologist Miriam Bradbury said.

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"Any showers and storms in these areas could bring those heavy falls that could lead to flash flooding and it's worth noting that we have widespread areas of riverine flooding also continuing across much of the state."

One low pressure system, named 29U, was sitting over the Coral Sea and has a 25 per cent chance of developing into a tropical cyclone on Thursday or Friday and could cross the coast between Cairns and Mackay, the bureau predicts.

Another two tropical lows are sitting to the north of Western Australia, 28U just south of Christmas Island and 30U off the Kimberley coast, both with a 25 per cent chance of developing into tropical cyclones on Thursday.

A fourth low, 31U, has formed in the Gulf of Carpentaria and looks set to move west over the Northern Territory and has only a low chance of becoming a tropical cyclone.

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Regardless of whether they become cyclones, multiple low pressure systems combined with a monsoon trough means widespread cloud, rain and thunderstorms for northern Australia this week, according to Weatherzone.

"Some computer models also suggest that at least one of this week's eastern low pressure systems will drag heavy rain over central and southeast Queensland towards the end of the week," Ben Domensino from Weatherzone said.

"If tropical cyclones do develop this week, parts of northern and eastern Australia could experience intense rain, flash flooding, damaging to destructive winds, large waves and coastal inundation."

Australia has already had nine tropical cyclones form this season, which extends from November to April.

The next four tropical cyclones will be named Narelle, Oran, Peta and Riordan.

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One Nation Leader Pauline Hanson has slapped her wrist and stormed out of the Senate today as she was censured over her remarks in a television interview.

Labor's motion, moved by Foreign Minister Penny Wong, sought to censure the firebrand senator for "inflammatory and divisive comments seeking to vilify Muslim Australians" – referencing when she said, "How can you tell me there are good Muslims?" on Sky News late last month.

Wong said elected officials must "set the standard for our country and to show basic respect for all Australians".

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"Last week, a man was arrested, alleged to have been planning to attack the Muslim community and mosques, as well as West Australian Police and the Parliament," she said.

"These are the real-world consequences of reckless, divisive political stunts that fan the flames of bigotry.

"To claim that none of them are 'good' is to say that there are no good Australians amongst them, to tell a child that no matter how hard they study, how kindly they treat others, how much they love this country, they will never belong."

Opposition Senate Leader Michaelia Cash said the Coalition supported the principles of the motion but would not back a censure as it should not be used as a "routine tactic to score political points".

"The censure is one of Senate's most serious institutional sanctions and it should therefore be rare and sober," she said.

During the motion's hearing, Hanson was caught in a war of words with independent Senator Lidia Thorpe.

She then stood up and slapped her own wrist before storming out of the chamber.

"There, are you happy? I've given myself a slap," she said.

"This is a joke."

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The motion was passed 36 to 17 with support from the Greens and two Liberals, Paul Scarr and Andrew McLachlan, who crossed the floor.

A censure is a formal motion that represents strong disapproval against a politician or government for their actions or performance, but carries no real consequences.

Greens Senator Mehreen Faruqi, who supported the motion, said it was "performative".

"Let's not pretend this is enough," she said. 

This is the second time Hanson has been censured in the span of a few months.

She was censured and suspended from the Senate late last year for wearing a burka in the chamber – a repeat of a stunt she pulled in 2017. 

One Nation has seen a surge in some opinion polls.

The minor party is currently on par with the Coalition at 23 per cent of the primary vote for the first time, according to the latest Resolve poll for The Sydney Morning Herald.

This is largely attributed to dissatisfied Coalition voters. 

Meanwhile, Labor still sits comfortably at 32 per cent of the primary vote.

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A truck driver has been winched to safety from his cabin as floodwaters engulfed the vehicle south-west of Broken Hill.

Rain has inundated outback NSW, closing highways from Queensland to South Australia.

The rescue helicopter arrived in the remote town of Yunta near Broken Hill.

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READ MORE: Pauline Hanson storms out of parliament before being censured

One crew member was winched down, balancing on top of the cabin as the driver clung on.

He attached the harness and both were brought to safety.

The rescue happened yesterday afternoon on the South Australian border.

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Roads have been closed across almost half of NSW, although for many it's not a curse but a blessing.

Orroroo Mayor Grant Chapman said the rain was "magic", with more than two thirds of the annual rain falling.

Residents in north-west Victoria have been soaked by a bout of flash flooding as heavy rain brought a wet end to the summer months.

Mildura was lashed with almost 150 millimetres of rain in the 36-hour period to 9am today, flooding a major highway and triggering a barrage of calls for help to the State Emergency Service.

Staff cleared Nuku Strange to leave Invercargill Prison’s watch unit a day before he died.

Six people were arrested over the aggravated robbery.

‘We weren’t proxy or party to these attacks.’

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Doctor tells Coroner’s court Poseidyn’s injuries were more like being hit with bat.