Stradbroke fire threat downgraded

Extensive water bombing on North Stradbroke Island has decreased the threat from a large bushfire which had been threatening several homes.

Authorities downgraded the watch and act alert late on Tuesday to an advice alert, the lowest level of warning, after a busy afternoon of firefighting on the island off Brisbane, a Queensland Fire and Emergency Services spokesman told AAP.

"Efforts fighting the fire (on Tuesday) afternoon were successful," he said.

It had been expected that the fire, which was fanned by strong winds, would reach Moyra Springs in the evening.

No properties were under threat, people were returning to their homes and an evacuation centre at Dunwich had been closed, the spokesman said.

"Crews will monitor the fire throughout the night and (Wednesday)," he said.

The blaze was started by a lightning strike nine days ago.

No homes have been damaged but the fire prompted the evacuation of about 900 campers on New Year's Day.