State Finds Fallen Aspen Tree on Energized Line Caused Aspen Acres Fire

Overview

• Colorado investigators concluded the Aspen Acres Fire began when an aspen tree broke free in high winds and contacted energized overhead power lines, igniting vegetation at the origin site.
• The report places the origin about 200 feet west of Highway 165 at mile marker 17 and documents physical evidence including the tree touching both conductors, charring, arcing on the lines, and melted aluminum under the contact point.
• Investigators cited wind gusts up to about 50 mph that pushed the tree into the lines and said the impact pulled the wires down to roughly three feet above ground where heat from arcing ignited nearby fuels.
• The team ruled out lightning, discarded smoking materials, and nearby open flames using STRIKEnet lightning data, witness statements, and fire‑behavior and burn‑pattern analysis.
• The blaze burned about 102,000 acres, destroyed hundreds of structures including more than 200 homes, remains largely contained, and the report made public through victims' attorneys is expected to drive regulatory scrutiny of utilities and potential litigation.