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Forecasters Warn of ‘Particularly Dangerous’ Fire Threat in Colorado and Wyoming with 100 Mph Wind Gusts Possible

Strong downslope winds under dry, warm conditions caused gusts over 100 mph and widespread fire weather warnings, prompting power outages and school closures, officials said.

  • The National Weather Service in Boulder forecasts continued strong wind and critical fire weather in Colorado through Dec. 19, with another surge expected.
  • Because of strong downslope flow and a warm, dry air mass, strong downslope winds under a dry, record warm air mass produced severe gusts and red-flag warnings as fires burned near the Yuma area.
  • Instrument reports recorded peak gusts of 109 mph at the NCAR Mesa Lab on Dec. 17 and sustained winds above 40 mph from 1 p.m. Wednesday until 6 a.m. Thursday.
  • Xcel Energy's preemptive shutdowns and wind damage caused power outages and disrupted schools, while three mountain elementary schools closed Dec. 18 for safety amid Yuma-area fires.
  • A fire-weather watch notes continued risk for the northern foothills, Fort Collins, Larimer County, and the Interstate 25 corridor as districts await Xcel Energy updates on Dec. 19 shutdowns.
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Forecasters warn of ‘particularly dangerous’ fire threat in Colorado and Wyoming with 100 mph wind gusts possible

Destructive wind gusts topping 100 mph along with other exceptional conditions are creating exceptional fire risk in Colorado and Wyoming.

·Atlanta, United States
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Coloradoan broke the news in on Thursday, December 18, 2025.
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