A mandatory evacuation for 20 to 30 homes threatened by a wildfire south of Columbus has been downgraded to voluntary.

Stillwater County commissioners lifted the order on the 5-square-mile Skibstad fire about noon Friday after firefighters declared it one-third contained.

Some structures have been burned, but officials have not said whether they are houses or outbuildings.

With the landscape dried out from recent hot weather and a high likelihood of new lightning strikes, officials said conditions were prime for new fires to erupt.