The Red Rock Fire in the Gros Ventre drainage saw limited growth Wednesday and into Thursday.

Fire officials estimated the blaze at 6,718 acres as of Thursday afternoon, up from 5,729 acres Tuesday night. The fire mostly grew into the Gros Ventre Wilderness to the south.

“Today ... fire behavior is a little bit quieter than it has been,” fire information officer Jen D’Emilio said. “The humidities are higher, and with the cloud cover today, the temperatures are not as hot.”

About 100 personnel are currently assigned to the fire along with one light helicopter, one heavy helicopter, eight engines and two hand crews.

“Everyone is working on long-term planning, getting structure protection in place and assessing any future structure protection needs,” D’Emilio said.

The Red Rock Fire is burning on the Bridger-Teton National Forest about 26-miles northeast of Jackson.

The lightning-caused fire was discovered Saturday at about 1:30 p.m.

South of Jackson, crews are working to extinguish the West Rim Fire, a lightning-caused blaze that has grown to one-tenth of an acre on the Hoback Rim.

Near the Greys River, the Deadman’s Fire has grown to 1.5 acres. Fire personnel are managing the blaze.  

In Yellowstone National Park, fire managers raised the fire danger to “very high,” the fourth of five fire danger levels ranging from “low” to “extreme.”

Yellowstone has seen 10 fires so far this season but no large blazes. All park services and facilities are open.

A new fire was discovered in Yellowstone on Thursday. The Heart Fire is located in the south central portion of the park, just northeast of Heart Lake. It is one-tenth of an acre in size.

The Gibbon Fire has burned about 6 acres in the backcountry during the last month about three miles east of Madison Junction.

Meantime, the National Weather Service issued a red flag warning Thursday for the Gallatin National Forest, which borders the north and west sides of Yellowstone.