Damage was still being assessed but the current estimate was 20 homes destroyed and about 130 people displaced, said Linsey Dale, a spokeswoman for Imperial County.
New South Wales Premier Gladys Berejiklian said her state is facing "another terrible day" and called on people in areas threatened by the fires to leave while they can.
The bushfires raging across Australia have had a devastating impact on the country's unique flora and fauna, with some estimates putting the death toll at nearly half a billion animals in one state alone, and experts believe it could take decades for wildlife to recover.
Officials told residents and others in the New South Wales (NSW) state town of Eden to leave immediately and head north if they did not have a bushfire response plan.
Winter, her son Riley, and a cousin had been monitoring the bushfires near the town about 250km (156 miles) south of Sydney when they decided to evacuate on New Year's Eve.
Morrison cut short a vacation with his wife and adult children amid public anger at his absence from Australia at a time of national crisis. He arrived home Saturday and on Sunday morning spoke to reporters while visiting the headquarters of the Rural Fire Service in Sydney.
Fires have ravaged more than 8 million hectares (19.8 million acres) of land across the country, an area nearly the size of Austria, killing 25 people, destroying thousands of building and leaving some towns without electricity and mobile coverage.
The extensive damage caused by fires that have ravaged more than 8 million hectares of land across Australia, killing several people, destroying thousands of buildings
So much has been said and written about the Australia wildfires and get none of it is enough. We cannot say enough, because whatever we say is the voice of the voiceless and defenseless