Australians are being warned of potential unseasonal floods as a massive rain band sweeps across the country. 

A 3,000km rain band stretching from the Pilbara and Kimberley, across the outback and into the eastern seaboard, is expected to intensify in the coming days.

While there is uncertainty  about where the heaviest rainfall will be, experts have forecast some areas of Australia will receive ‘more than a month’s worth of rain’. 

Six states and territories have one flood warning in place as of Tuesday afternoon, sparing only Queensland and the ACT. 

New South Wales

It is a wet Wednesday in Sydney, but the rain is expected to clear on Thursday and Friday with a cloudy weekend on the way.

The mercury is forecast to dip just below 10C for the rest of the week in Sydney, with maximum temperatures remaining in the teens. 

However more rain is forecast from Monday next week.

Victoria

Showers are forecast for Melbourne from Wednesday through to Sunday. 

However, the state will escape the heavy rain, with a total of 2mm expected to fall on Friday and Saturday.

Temperatures are expected to remain chilly for the rest of the week, with a low of 6C today and high of 12C. 

Queensland

Early weather modelling suggests Queensland’s south east will be hit by rain from Saturday and Sunday before intensifying in the beginning of next week. 

Sky News meteorologist Bradlyn Oaks labelled the weather event as ‘unseasonable’ and warned some areas could potentially see up to 150mm of rainfall. 

‘There is a lot of model variation here on exactly where the highest accumulation will be,’ Ms Oaks explained. 

‘But we’re watching for a lot of wet weather with these systems and stormy conditions.’ 

The moisture is expected to ramp up on Sunday, with heavy rain and more storms possible for interior areas of Queensland, with rainfall intensifying towards the coast at the beginning of next week. 

Despite the wet weather, the Sunshine state’s capital will be sunny for the rest of the week. 

South Australia

Emergency crews are bracing for heavy rain in South Australia’s north as a private dam remains at risk of failure in the Adelaide Hills.

The State Emergency Service was on Monday night continuing to monitor dams at Hope Forest and Basket Range, after risk abated of the latter dam failing.

A watch and act warning remained in place for the Hope Forest dam, with some road closures in place for residents.

Nearby homes could be flooded if the dam fails, after continual rain in the past days raised its risk profile.

Western Australia

Western Australia will remain relatively dry as the rain band moves across the country. 

Perth is forecast to be sunny for the rest of the week, with maximum temperatures in the high teens and a slight chance of showers on Sunday. 

It comes after temperatures plummeted in the state’s capital on Tuesday, with residents shivered through the coldest morning on record in seven years. 

The city recorded a low of 0.7C at 6.47am, which is the coldest morning since June 13, 2016. 

Temperatures fell to -0.9C in Jandakot, in the city’s south, which was also the coldest morning since July 2016 and coldest June morning since 2010. 

Collie was the coldest in the State plummeted to -2.3C at 3.45am while the Swan Valley and Perth Airport dell to -0.4C and -0.6C respectively.

The chilly weather was caused by a high pressure system centred in the Indian Ocean and pushing cool air into the Perth metro area. The lack of cloud cover exacerbated the freezing temperatures, according to Weatherzone. 

The cold and mostly dry airflow is expected to continue for several days, with a series of cold nights ahead for the southern half of Western Australia.

Northern Territory

Uluru received 30.6mm in 12 hours on Monday — about 10 per cent of its annual average with more heavy rain forecast for the week. 

Rain is forecast in Alice Springs every day for the next week with overnight temperatures forecast to dip as low as 3C. 

Snow is also expected on some of the desert’s highest peaks later in the week.   

The Bureau of Meteorology issued a severe weather update on Tuesday, with flood watch for southern and western parts of the state. 

Meteorologist Miriam Bradbury said a second burst of rainfall is expected to develop across the Northern Territory on Friday bringing more potential flooding.

‘We’re not necessarily expecting downbursts of heavy to intense rainfall with this system, it’s more going to be steady rain that accumulates over hours or days,’ she said.

‘What makes this system significant is the duration of the event, stretching all the way through the weekend, and the extensive rainfall across the country.’

A BoM alert explained the expected rain for the week, which could see up to 100mm of rainfall, would exceed the state’s June average. 

‘Widespread daily rainfall totals of 10-30 millimetres are likely for parts of the flood watch area from (Monday) until Saturday, increasing to 20-50 millimetres across the southwest on Tuesday, with isolated heavier falls,’ a BOM alert states

‘Event rainfall totals from (Monday) to Saturday could reach 50-100 mm, exceeding the June average of 5-20 mm.’

It comes after heavy rainfall across the state’s Red Centre saw waterfalls cascading off Uluru earlier this week. 

Australian Capital Territory

In the nation’s capital, Canberra will escape the wet but will need to rug up as early morning temperatures are forecast to dip to as low as -1C on Thursday and Sunday.

Tasmania 

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Rain is expected across Tasmania as the rain band moves east and develops across the country, with heavier rainfall forecast for the state’s west. 

Up to 8mm of rain is predicted to fall in Hobart on Thursday, with showers easing on Friday and Saturday.  

Source: | This article originally belongs to Dailymail.co.uk