UPDATE: As of Thursday night just before 9 p.m., the Brian Head Fire has grown to an estimated 17,294 acres and is 5 percent contained.
That total is up from the 11,000 acres reported earlier in the day, and containment has fallen from 15 to 5 percent.
Fox 13's Lauren Steinbrecher is in Panguitch, which is near the fire. See the video above for her live report.
Previous story continues below:
GARFIELD COUNTY, Utah - Authorities have closed Highway 143 from Panguitch to Parowan for the Brian Head fire.
The Garfield County Sheriff's Office has called for evacuations in Panguitch Lake including Horse Valley, Clear Creek, Beaver Dam, Blue Springs and Panguitch Lake Campground.
Authorities estimated they have evacuated residents in about 400 cabins, but they weren't sure how many people were affected by the evacuation.
The fire has swelled to cover about 11,000 acres.
It has destroyed three cabins in the Panguitch Lake area along with two horse trailers and a pickup truck.
Fire crews said the command post is now threatened by the fire.
The fire made an eight-mile run to the northeast with the help of southwest winds overnight.
A Red Flag Warning is in effect for much of Utah Thursday.
Fire officials are urging residents to remember the "5 P's" of evacuation: People, prescriptions, papers, personal needs and priceless items.
Firefighters say the evacuations are "urgent" but were "issued with enough time and space for a calm and smooth exit."
Displaced residents are encouraged to contact the American Red Cross in Utah for assistance.
The fire has grown to 10,950 acres and is 15 percent contained.
The Brian Head Fire started midday Saturday, June 17, and grew very quickly through dense timber on lands managed by Brian Head Town, Iron County, in cooperation with the Utah Division of Forestry, Fire and State Lands.
The fire has now burned onto Dixie National Forest lands as well.