The Reynolds Creek Fire at Glacier National Park was 45 percent contained as of 8 a.m. Tuesday, according to the U.S. Forest Service's InciWeb system.
The fire is burning along the north shore of Saint Mary Lake, in rocky, rugged terrain and burning in timber, brush, and grass. More than 690 people are fighting the blaze, which covers 3,170 acres, according to InciWeb.
Glacier National Park remains open, but an 18-mile section of Going-to-the-Sun Road is closed from the St. Mary Visitor Center to Big Ben. The visitor center itself is open, though with limited services. The Rising Sun Motor Inn, the Rising Sun Campground and Logan Pass remain closed. St. Mary Campground is expected to open Wednesday, InciWeb reports.
The Sperry Trail is open from Lake McDonald Lodge to Gunsight Pass, but travel beyond the pass is closed due to the fire.
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Some areas of the fire received heavy thundershowers Monday, InciWeb reports, so helicopters flew limited missions, transporting cargo to different parts of the fire line. If weather permits, the aerial attack will increase Tuesday, InciWeb reports. Fire crews were also braced for an increase in fire activity due to higher temperatures and lower humidity.