The Trinity Ridge Fire has burned 144,102 acres as of this morning and is 18 percent contained.
Fire officials said crews are working along the fire's western flank today, preparing the Middle Fork Road for approaching flames. The focus will be on an area near the 1994 Rabbit Creek Fire, southwest of the Sheep Rock drainage. Crews are also beginning fire lines from Forest Road 357 to Rabbit Creek Summit and south to Thorn Creek Butte as they prepare for possible burnout operations.
The National Weather Service says there is a slight chance for thunderstorms across the fire area today. The storms could produce dry lightning and gusty winds. A chance for storms increases on Saturday.