UPDATE: The two victims of Kangaroo Island's devastating bushfires have been identified as well-known bush pilot Dick Lang and his son, Clayton.

Read the latest here.

PREVIOUSLY: The town of Parndana in the centre of Kangaroo Island has been evacuated with two-thirds of the island subject to emergency warnings.

Police say Kingscote and Penneshaw are the only safe places for residents and holidaymakers as flames rip through the tourist spot.

Firefighters are facing ferocious winds as a cool change comes through, pushing the fire front in all directions.

The entire island is now subject to bushfire warnings: red is at emergency level, while yellow is watch and act. Credit: CFS

The CFS has warned holidaymakers that the blaze tearing through the national park could be "virtually unstoppable" as a wind change creates volatile conditions.

Ferocious flames tear through the national park at Kangaroo Island. Credit: Brenton Davis

A view from the ground on Kangaroo Island. Credit: 7NEWS

Police are ordering tourists and residents to evacuate as the fire front closes in.

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Country Fire Service chief officer Mark Johns says it is disappointing a number in the line of fire have not yet evacuated.

"Reports are coming back that some people did not heed the warning to leave early," he said.

"It may be too late, and we urge them to seek a place of safety."

Play Video A Kangaroo Island resident has captured the ferocity of fires burning at the popular tourist spot. A Kangaroo Island resident has captured the ferocity of fires burning at the popular tourist spot.

Second blaze

A second emergency warning has also been issued for the Adelaide Hills.

Residents at Kersbrook, near Watts Gully, are being told it could soon be too late to leave.

"You are in danger. Act now. Identify where you will seek shelter, preferably in a solid building. Only leave if your path is clear to a safer place," the CFS said.

The warning area at Kersbrook, in the Adelaide Hills. Credit: CFS

"Heat from the fire can kill you well before the flames reach you. Don't enter this area as firefighters are now unable to prevent the fire spreading."

The blaze is burning uncontrolled in a south and easterly direction towards Forreston Road, Warren Road, Cromer and Forreston.

The CFS says conditions are continually changing.

For the latest updates, visit the CFS website or phone the Bushfire Information Hotline on 1800 362 361.