Fire officials say heavy rain and cooler temperatures allowed them to fully contain the blaze Saturday in Box Elder County.
No injuries or property damage were reported as a result of the lightning-sparked fire.
Firefighters also contained a 20-acre fire that destroyed three structures in the tiny Grand County community of Castle Valley.
Moab Fire Chief Corky Brewer told the Deseret News that the wind-whipped blaze burned a barn, historic cabin and storage shed.
In southern Utah, crews were battling a 138-acre fire caused by an escaped campfire on Smith Mesa.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)