GLENWOOD SPRINGS, Colo. - The Red Canyon Fire in Garfield County has grown to 350 acres and was threatening 20 primary structures at 7:30 p.m. Tuesday, the Denver Post reported.
The fire is 10 percent contained, fire officials told the newspaper.
Just before 4 p.m., evacuation notices were sent to residents near Lookout Mountain.
The Carbondale Fire District tweeted the fire was taking "a short run" around 3:30 p.m. About 20 minutes later, they announced evacuation notices were being sent to residents north of County Road 115, east of the fire and south of I-70.
Evacuees can go to Roaring Fork High School and bring their large animals to the Garfield County Fairgrounds.
The fire broke out about 1 p.m. Monday just off County Road 115 about 2.5 miles from Highway 82, the Garfield County Sheriff's Office said.
A ground crew of about 60 people continue to work the perimeters, authorities said.
Six fire jumpers were on scene at about 3 p.m., the sheriff's office said.
During the afternoon, three single-engine air tankers and one heavy air tankers were battling the fire, Carbondale Fire tweeted.
-- Firefighters join Red Canyon Fire fight --
Additional resources are joining the fight against the Red Canyon Fire burning between Glenwood Springs and Carbondale.
Ground crews were scheduled to arrive Tuesday afternoon, according to the Garfield County Emergency Communications Authority. They will join a team of approximately 60 firefighters already on the ground and two aircraft.