A West Australian teenager and her father have made it to safety after becoming stranded in thick snow in Tasmania's Cradle Mountain area.

Key points: Multiple hikers have found themselves stranded after wild weather hit Tasmania's north

Multiple hikers have found themselves stranded after wild weather hit Tasmania's north Victorian man Michael Bowman remains missing

Victorian man Michael Bowman remains missing A WA father and daughter are being escorted out, while a UK man who was overdue and a school group have already safely left the park

Emily Koziniec, 15, and father Terry encountered severe weather in the Cradle Mountain-Lake St Clair National Park two days ago and were forced to camp out on a track in snow again last night.

They set off last Thursday on a hike at the southern end of the national park but the pair were among a number of bushwalkers caught out by blizzard conditions.

The duo was found safe and well about 1 kilometre south of Pelion Hut, but severe weather prevented a rescue helicopter from landing.

Police and a paramedic walked them to the helicopter at Pelion Hut before they were taken by helicopter to the Cradle Mountain visitor centre.

The rescue helicopter waits to pick up the WA father and daughter at Pelion Hut. ( Supplied: Tasmania Police )

Earlier, Emily's mother Tracey Koziniec said her daughter was in "high spirits" but anxious to get out.

"They slept warm and had a warm breakfast," she said.

"I am happy and aware there are other families who have not slept as well last night."

The father and daughter, who had been preparing for their hike for six months, started the Overland Track from Lake St Clair on Thursday, but severe weather made the going much slower than anticipated.

They are among a number of walkers who have encountered trouble in the park.

Victorian walker Michael Bowman is missing in the southern end of park.

A walker from the UK who was overdue at Dove Lake in the park's northern end was evacuated this afternoon, along with a school group that was also on the track.

A number of people have been caught by the turning weather in the park. ( Facebook: Tasmania Police )

Father and daughter planned for 'worse than this'

Ms Kozniec said her husband contacted her via text at 4:00pm on Sunday, while walking near Kia Ora hut, to let her know they were travelling very slowly and ask that she contact Parks and Wildlife Service for advice.

Unable to reach them, she then called police.

Ms Koziniec said father and daughter were experienced walkers who had planned for "worse than this".

"He planned for [-20 degrees Celsius] on the sleeping bag, so that is all coming into effect," she said.

"They've been preparing for it for six months. They had checked the weather forecast, they had planned and knew that it was going to snow.

"It's just because it's now taking so long — three days to transit one day's worth of the walk."

The pilot of the rescue helicopter likened flying in the conditions as "white-water rafting". ( Supplied: Tasmania Police )

She said although her daughter had done three or four day hikes before, she had not been in snow.

"She wanted to see snow, so this was her first experience in the snow."

Ms Koziniec believed the specialist survivalist training her husband undertook in Jindabyne, NSW, last year was the reason they were OK.

"It has not been fun, but I've also relied on the fact that he has done this sort of stuff before and he's basically carrying out his plan for when things go bad, and he's putting it into effect," she said.

"They're still healthy, they're tired and smelly, but they're not in danger."

She said she was hoping they could get airlifted out today or tomorrow.

Chopper to sweep huts for stranded walkers

Tasmania Police and State Emergency Service (SES) rescue crews resumed the search for Mr Bowman this morning, but weather conditions have been hampering efforts.

The 57-year-old Victorian man last made contact with his family about a week ago and was due to return to the Lake St Clair visitor centre on Saturday.

An experienced walker, he was believed to be carrying an emergency beacon but had not activated it.

Weather permitting, rescue teams will use the rescue helicopter to check for bushwalkers in every hut in the area.

"We will sweep all the huts in the national parks in Lake St Clair Cradle Mountain National Park and the Walls of Jerusalem National Park," Inspector Darren Hopkins said.

"I think there'll be about 10 in total, to see if there are any walking parties there that want to be removed from the park for their own safety, plus to give us an idea of who's still in the park.

"We're doing that in the event that people are stuck there and they can't move and can't raise help, and hopefully prevent any more calls in the future."

Ben O'Lachlan, a tour guide who has worked at Cradle Mountain, said the amount of snow in the park this week was unprecedented.

Pine Forest Hut is one of about 10 being checked for walkers who want to be airlifted out. ( Supplied: Tasmania Police )

During the winter months, many of the tracks in the park are free to hike, making them more appealing for walkers looking to avoid crowds.

"It's stunning, there's no track limit [of people] … walking the Overland Track this time of year and that attracts a lot of people to come because it's cheaper," Mr O'Lachlan said.

"But if they put themselves at risk, which could lead to loss of life, then you've got to really consider if it's worth it."

School students safe

The students from Friends School left the national park on Tuesday. ( ABC News: Manika Dadson )

As of this morning there were about 30 people registered as bushwalkers in the national park, including the group of 10 from The Friends' School in Hobart, which has now been evacuated.

The principal of the private school, Nelson File, has confirmed that the students who began walking the Overland Track on Saturday as a massive cold front hit the state were safe.

The students left Hobart on Friday to drive to Cradle Mountain, the end of the popular 80-kilometre-long track.

Police say Mr Bowman is an experienced bushwalker. ( Supplied: Tasmania Police )

On Saturday there was a bushwalkers' weather alert in place and snow predicted.

Mr File told the ABC that the party walked 10 kilometres along the track but would now cut the expedition short and return today.

"They're safe, they're experienced, they didn't take any risks and they're coming home," he said.

Mr File said the students and their teachers and guides had spent "a lot of time" sheltering in huts, including the Scott Kilvert Hut.

The memorial hut commemorates teacher Ewen Scott and student David Kilvert, who died in near-blizzard conditions at Cradle Mountain in May 1965 on a Riverside High School trip.

"It's a good learning experience for them," Mr File said.

On Monday, police airlifted a Brisbane man who was potentially suffering from mild hypothermia from the north-western end of Lake St Clair.

And two other walkers were rescued after being caught in blizzard-like conditions in the Walls of Jerusalem National Park.