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Monsoon Rains Temper Western Slope Wildfires as Lee Hits 90% Containment, Derby Holds at 0%

Operations have shifted toward containment work with selective closures still in place.

Overview

  • As of Monday, the Lee fire stands at 137,758 acres with 90% containment, while the Derby fire is approximately 5,346 acres with 0% containment and 648 personnel assigned.
  • Monsoonal moisture delivered roughly 0.1 to 0.5 inch of rain over the Derby footprint Sunday, with forecasters calling for daily showers, cooler temperatures and light winds this week.
  • Incident meteorologists cautioned about localized flash flooding and debris flows on recent burn scars, along with frequent lightning that could spark new ignitions.
  • The FDNY Incident Management Team assumed command of the Lee fire, where crews are securing established lines, conducting patrol and mop-up, and advancing suppression repair.
  • Forest and BLM closures and targeted evacuation notices continue around the Derby area, and state health officials issued smoke advisories near the Derby and Stoner Mesa fires.