Neighbors of the home where the fire started, Jack and Hope Schirard, heard three large booms back to back from Christine Polinsky's house around 4 p.m., Hope Schirard said.
They thought the sound might have come from a gas explosion.
Firefighters were unable to confirm a gas explosion, saying the cause of the blaze remained under investigation.
The Schirards were the first to arrive at the La Plata County Fairgrounds, which is the designated evacuation center.
They believe their home is safe because the fire was moving away from it.
There is a rodeo at the fairgrounds tonight, and it is unclear how that will effect the evacuation center. Parking is available at Durango High School if needed.
The Lightner Creek Fire is estimated at 100 acres in size, up from the previous estimate of 25-50 acres. Firefighters said people from 140 residences have been asked to evacuate.
Firefighters said the only home to have burned in Wednesday's Lightner Creek Fire as of 6:50 p.m. is at 1255 Lighter Creek Road (County Road 207). The property was purchased in 2014 by Christine Polinsky for $831,000, according to the La Plata County Assessor's Office. The property has a main home and several secondary structures on 4.2 acres.
Firefighters are unsure if the fire started in the home, or if it was consumed as part of a wildland fire.
Residents on County Road 206 and the Twin Buttes area were ordered to evacuate shortly after 6 p.m. Wednesday. The evacuation did not apply to the Westwood Apartments, which were under pre-evacuation. There are no homes in the Twin Buttes subdivision, but there were construction workers in the area.
About 100 guests were evacuated from the Lightner Creek Campground, said Valerie Firth, the camp host.
It was a "mass exodus," she said.
Many of the guests rode the Durango & Silverton Narrow Gauge Railroad on Wednesday, and were not around Wednesday afternoon to retrieve their possessions, she said.
Hot, dry and windy conditions are hampering firefighting efforts west of Durango.
Winds were gusting up to 28 mph near the Durango-La Plata County Airport and are likely stronger at higher elevations because of warm weather, said meteorologist Andrew Lyons, with the National Weather Service in Grand Junction.
It was 88 degrees in Durango around 5 p.m., he said.
Dry weather is predicted to continue for the next few days.
"This weather pattern is pretty stagnant; there is not a lot change with it," he said.
A red flag warning was issued until 8 p.m. Wednesday, and another warning will go into effect from noon until 8 p.m. Thursday, the National Weather Service said.
Red flag warnings are issued when fire danger is particularly high because of wind, high temperatures and low humidity.
Firefighters were unsure if the Lightner Creek Fire started as a house fire or as a wildland fire.
"We don't know chicken and egg on that one," said Scot Davis, with the Durango Fire Protection District. "It was just too fast."
The La Plata County Fairgrounds has been opened for residents who have been evacuated.
The Lightner Creek Fire was 25-50 acres in size, according to the Durango Fire Protection District. Three heavy air tankers are en route from Denver to help slow the spread.
"Fire behavior will continue to be effected by high air temperatures, low humidity and high winds," according to the fire department.
A federal incident command team is also being assembled to assist.
Firefighters were battling two distinct fires in the Lightner Creek area. The first appears to have started as a house fire that spread to the wildland and headed south down Lightner Creek canyon.
The second fire was about three acres in size and burning east of the initial fire. It was unclear if the first fire sparked the second fire.
No one is being allowed to turn onto Lightner Creek Road (County Road 207) from U.S. Highway 160.
Some residents were visibly upset about not being able to return home for pets.
"A bunch of us have animals up there," said Jordan Epstein, a resident of Tall Pine Apartments. "Our cats are up there and our neighbor's dog."
Firefighters are battling a second wildfire in the Lightner Creek area. They weren't sure if the second one, burning east of the original fire, was caused from hot embers "spotting" and starting a new fire. The second fire was moving toward Twin Buttes, a new subdivision that is under construction west of Durango.
Firefighters are evacuating residents in the Lightner Creek area west of Durango for a wildfire that threatens several homes.
The fire was reported shortly after 4 p.m. in the 1200 block of Lightner Creek Road (County Road 207) a couple of miles west of Durango.
Homes were evacuated north of the intersection with county roads 207 and 208. Pre-evacuation notices were given to homes south of the intersection to U.S. Highway 160. Homes along Highway 160 a mile west of the Lightner Creek Road also were on pre-evacuation notice, meaning they may need to evacuate at a moment's notice, said Scot Davis, with Durango Fire Protection District.
The blaze apparently started as a structure fire and spread to the wilderness. Flames quickly ran up a hillside and over a ridge.
Gusty winds drove flames south through the Lightner Creek canyon along the west side of the road. As of 4:55 p.m. flames were a few hundred feet from Lighter Creek Mobile Home Park, 907 Lightner Creek Road, where a couple dozen homes are located.
A small airplane made two passes and dropped fire retardant above the mobile home park. The fire appeared to slow as of 5:05 p.m. as the winds settled down.
Lightner Creek Road was closed to public access.
Check back with www.durangoherald.com for updates.
shane@durangoherald.com
Staff writers Shane Benjamin, Jonathan Romeo, Mia Rupani and Mary Shinn contributed to this report.
