The Lower North Fork Fire is one of Colorado’s most consequential fires, not for its size, but for how it started and what it changed.
On March 26, 2012, a Colorado State Forest Service prescribed burn southwest of Denver reignited and escaped during a Red Flag wind event, racing into a residential area. Three residents died and 27 structures were destroyed.
The tragedy prompted Colorado to temporarily suspend state prescribed burns, restructure oversight of the program, and change liability rules, a turning point in how the state balances the benefits and risks of controlled fire.
Every major Colorado fire reinforces the same lesson: the homes most likely to survive are the ones prepared before a fire starts. It is a reminder that even beneficial fuel-reduction tools demand extreme caution, and that homeowners should never rely solely on others to manage the fuels around their property. Creating defensible space, hardening the home against embers, and documenting the work for insurance and grant funding are the highest-leverage steps a homeowner can take.
Homeowners in the Denver Foothills region can get a free assessment from our Denver Foothills team.
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The Hayman Fire (2002) burned 138,114 acres SW of Denver, Colorado's largest until 2020. Cause (arson), 600 structures, deaths and aftermath.
Read the overviewThe High Park Fire (2012) burned 87,284 acres west of Fort Collins, destroyed 259 homes and killed one. Cause, timeline and aftermath.
Read the overviewThe Quarry Fire (2024) burned 579 acres in Jefferson County southwest of Denver and was investigated as arson. Facts, evacuations and context.
Read the overviewThe complete, searchable record of every major Colorado wildfire in history.
Open the full guideAn escaped Colorado State Forest Service prescribed burn that reignited during high winds.
Three residents died and 27 structures were destroyed.