Here’s a look at wildfires burning in Colorado:

Pine Gulch fire

Acres/Location: 139,006 acres/18 miles north of Grand Junction

Containment: 77%

Started: July 31, lightning

Firefighters: 753

Pine Gulch fire progression map

The giant fire started by lightning on July 31 in a remote area north of Grand Junction quickly got out of control and has since grown to the largest wildfire in Colorado history as it races through grass, sage, pinyon-juniper and fir. The combination of drought, dry vegetation, unseasonably hot weather and steep terrain led to several weeks of explosive growth. In one night, the fire grew by 30,000 acres. As of Friday, it was estimated at 139,006 acres, surpassing the 138,114-acre Hayman fire in 2002 as the state’s largest.

Despite its massive size, only one abandoned building has burned and no injuries have been reported. Containment has increased to 77%.

With resources in the West stretched thin, fire managers have begun drawing down the number of firefighters battling the Pine Gulch fire. On Friday, there were 753 firefighters, about 150 fewer than the 915 on Thursday.

The weather also has become an ally, with rain and lower temperatures through the weekend after weeks of 90-degree days and high winds. A cold front expected to arrive Monday could bring a return of 30 mph winds.

Grizzly Creek fire

Acres/Location: 32,408 acres/Glenwood Canyon

Containment: 71%

Started: Aug. 10, human caused

Firefighters: 663

Firefighters doused edges of the fire with helicopter water drops and strengthened fire lines with hand tools and dozers.

As containment increases, crews will shift their efforts to landscape repairs.

Friday is expected to bring thunderstorms although heavy rains could bring strong winds and debris-filled runoff.

Interstate 70, could see intense rain, mudslides, and rockfall over the weekend. The hazardous weather forecasts coupled with power pole repairs could create delays and intermittent closures along Intestate 70.

The road reopened between Gypsum and Glenwood Springs on Monday after days of closures while the fire burned just off the shoulder. Drivers are encouraged to exercise care and drive slowly. 

Officials predict the fire will be fully contained by Sept. 18.

RELATED:

– Ash raining down on Colorado a sign of hotter, drier and more dangerous fire seasons

–Grizzly Creek fire increases flood risk in Glenwood Canyon

–Gov. Polis activates National Guard to assist with wildfire response

Williams Fork fire

Acres/Location: 12,048 acres/seven miles southwest of Fraser in the Arapaho and Roosevelt National Forests

Containment: 5%

Started: Aug. 14, human caused

Firefighters: 380

The Williams Fork fire is burning on the Arapaho and Roosevelt National Forests and Pawnee National Grassland seven miles southwest of Fraser. The human-caused fire started near the Henderson Mill Aug. 14 and quickly grew due to high winds and steep slopes. Local firefighters immediately responded, but hot, dry and windy conditions allowed the fire to race through the timbered crowns of the lodgepole pine, fir and aspen forest.

The fire grew only 56 acres since Thursday as its spread has slowed in wetter, cooler weather. Crews and equipment are shifting to the east side of the fire area to construct containment lines around private land and the Fraser Experimental Forest.

Cameron Peak fire

Acres/Location: 22,971 acres/West of Fort Collins, Arapaho and Roosevelt National Forests

Containment: zero percent

Started: Aug. 13, unknown cause

Firefighters: 730

The Cameron Peak fire ignited on Aug. 13 on the Arapaho and Roosevelt National Forests near Cameron Pass and Chambers Lake. It is burning in heavy timber stands over rugged terrain. Hot, dry, windy weather, combined with critically dry fuels have kept firefighters from slowing its spread.

Rainstorms, higher humidity and lower temperatures should aid firefighters this weekend.

Thorpe fire

Acres/location: 159 acres/Pike and San Isabel National Forest, west of Lake George.

Containment: 75%

Started: 1 p.m. Sunday, unknown cause

Firefighters: 26, three helicopters, three large air tankers, one very large air tanker.

Willis fire

Acres/location: 16 acres/1.5 miles Northeast of Lake Isabel

Containment: 100%

Started: 7:26 a.m. Tuesday, unknown cause

Firefighters: Helicopter and three large air tankers.

East Fork fire

Acres/location: 1,100 acres/11 miles Southeast of Trinidad

Containment: 10%

Started: Aug. 22, lightning

Firefighters: 25

Burning in rugged terrain near the New Mexico border. Firefighters worked to extinguish the fire with the help of natural barriers and air support from a large tanker.