Viewing the Reynolds Creek Fire on Sunday from Going-to-the-Sun-Road/NPS

Firefighters continue to make progress on the Reynolds Creek Fire at Glacier National Park in Montana. A cold front Monday brought higher humidity to the park, but erratic winds could be troublesome, according to the weather report. Thirty percent of the 3,237-acre was said to be contained Monday morning.

"Some areas of the fire could receive heavy thundershowers today, and firefighters will be paying attention to the potential for flash flooding and debris movement in the burn area," a park release said. "Smoke is starting to settle in the St Mary valley."

Relative humidity was reported at 36 percent.

The fire was burning along the north shore of Saint Mary Lake, in rocky, rugged terrain and burning in timber, brush, and grass. Some of the 655 firefighters were working on building a fire line on the steep area above Going-to-the Sun Road at the west end of the fire. Other hotshots were busy locating and extinguish hot spots outside the fireline at the head of the fire.

Going-to-the-Sun Road remained closed from the St. Mary Visitor Center to Big Bend on the west side of the Divide, a distance of 18 miles. The St. Mary Campground, the Rising Sun Motor Inn, the Rising Sun Campground and Logan Pass also were not open to the public. The Sperry Trail was open from Lake McDonald Lodge to Gunsight Pass. Travel beyond the pass was closed due to the fire. The Lake Ellen Wilson Backcountry site was open.