WA budget at risk from coronavirus fallout

The deadly coronavirus outbreak threatens to put a significant dent in Western Australia's finances amid a plunge in the iron ore market.

Premier Mark McGowan says a 13 per cent decline in the iron ore price over the past fortnight to $US81 ($A121) per tonne is one of several concerns for a state economy heavily dependent on a lucrative trade partnership with China.

Construction has ground to a halt across China amid travel restrictions and port closures, prompting investors to dump iron ore shares.

The government has forecast a surplus of $2.6 billion this financial year but that would be eroded by a fall in iron ore royalties.

"On our budget, every dollar (the iron ore price) falls, it costs us $85 million," Mr McGowan told 6PR radio on Monday.

"So you can start to see what the broader implications of this might be."

The government's mid-year financial projections statement included a projected iron ore price of $US86 ($A128) per tonne.

"We went for a very conservative price on iron ore on the basis that governments in the past have overestimated the price of iron ore," the premier said.

"Even on our conservative estimates, the price is now significantly under that."

The premier on Monday met with representatives from the state's mining, tourism, education and agriculture industries.

All have been affected by the coronavirus outbreak and subsequent ban on arrivals from China.

More than 240 evacuated Australians were due to land in the state's north on Monday on a Qantas flight from Wuhan, the epicentre of the coronavirus outbreak.

The passengers were set to arrive at the RAAF Base Learmonth near Exmouth before being taken to Christmas Island on smaller military aircraft.

Passengers underwent health checks before boarding the flight and were not allowed to travel if they were unwell.

WA authorities have nonetheless made contingency plans in case any of the passengers are ill when their flight lands.

St John Ambulance and Royal Flying Doctor aircraft will be on standby at Learmonth to transport passengers to Perth if needed.

Any affected travellers would be quarantined at either Perth Children's Hospital or Sir Charles Gairdner Hospital.

WA was also sending a team of medical assistants to Learmonth to help with the assessment of patients.

The state is yet to record a positive test for coronavirus.