UPDATE: Rescue efforts continued on Monday and the four buskwalkers were found 'alive and well'.
Inspector Philippa Burk said police tried to make contact with the group but their phone batteries were low on Sunday.
"The good news of today is that all four people have been located alive and well," she said.
"We would urge you, if you're going for a bushwalk, to register your details.
"When you get up into this terrain the weather conditions can change significantly."
EARLIER: A search and rescue crew continued looking for four bushwalkers who became disorientated on top of the Tarn Shelf at Mount Field National Park on Monday.
The walkers called for assistance at about 4.15pm on Sunday but communication with the group was unable to be maintained.
Inspector Philippa Burk said at about 5.30pm the Westpac Rescue Helicopter sighted the group of lost bushwalkers.
"The bushwalkers, two male and two female, all aged in their early 20s, were sighted...but due to poor weather conditions the helicopter was unable to safely land at the location," she said.
"A ground crew were dispatched to where the helicopter had sighted the bushwalkers at Mt Bridges near Lake Webster but when ground crews arrived the bushwalkers had moved on from that location."
IN OTHER NEWS
Ground and aerial crews re-commended their search efforts this morning for the group.
Two bushwalkers were airlifted from the Overland Track on Sunday morning.
Police said the pair was lucky two well prepared bushwalkers completing the track were able to offer them support and shelter before they were rescued.
"Police would like to remind those people planning to walk within the Cradle Mountain National Park to be aware of the current changes to the start of the track with the temporary closure of Waterfall Valley Hut, to be adequately prepared for the continuous changing conditions, and consider the weather warnings before commencing the walk," police said.