Firefighters are anticipating that it will take them until late October to contain the Beaver Creek fire, which is burning in one of the forests hardest hit by mountain pine beetle.
Tactics being used to contain the blaze have already emerged as a case study in how to suppress fire in an environment transfigured by thousands of dead trees.
Beetle-kill trees in the area thwarted firefighters’ attempts at a direct attack — downed trees made building a fireline difficult and gusts from helicopter rotors only caused more trees to fall, according to a lessons learned report published on July 27.
An indirect approach containing the fire became essential when initial attack crews felt radiant heat from flames a half a mile away:
Because of the extreme fire behavior exhibited early on in the Beaver Creek Fire, firefighters knew a direct attack would be both dangerous and ineffective…Firefighters removed fuels, wrapped buildings, laid hoses and sprinklers around the structures, and strategically burned out around buildings in advance of the fire.
The conditions in the Routt National Forest, along the Colorado-Wyoming border, also proved challenging to firefighter safety, according to a post from the incident management team on InciWeb.
The fire is burning in heavy beetle killed timber. The infested trees are subject to blowing over contributing large amounts of down timber and providing fuel for extreme fire behavior when strong winds and terrain features are in alignment, making the timbered areas unsafe for firefighters.
The fire, which started on June 19 in north-central Colorado, spread by several hundred acres during a hot, windy and humid day this week and forced firefighters to pull back to safety zones, The Denver Post reported.
As of July 29, the fire had burned 30,137 acres and is 12 percent contained.
Thanks to some northwesterly winds, Colorado residents can expect to see smoke from the Beaver Creek fire and other western wildfires this weekend, according to an update from the Colorado Department of Public Health and Environment.
Thanks and a tip of the hat go out to Allen.