PARADOX, Colo. – About 400 firefighters and five helicopters are battling an eight-square-mile wildfire north of Paradox, Colo., near the Utah border.

Fire managers expect calm winds again Tuesday but slightly higher temperatures, and Rita Baysinger with the Rocky Mountain Area Coordination Center says firefighters are “pretty comfortable with the success they’re making on it.”

The fire started Friday and is 30 percent contained. The cause is under investigation.

About 150 firefighters are at a second fire that has scorched four square miles near Pagosa Springs, about 200 miles southwest of Denver. Containment was at zero late Sunday.

Authorities have warned some residents that evacuations could be ordered. About 10 homes and cabins are north of the fire and 30 or 40 are to the east.

The fire was started by lightning May 13.