5 Injured, High School Evacuated After Grass Fire Erupts in Colorado

Blaze burns 10 acres in Thornton, prompting evacuations and highway closure

Published on Feb. 26, 2026

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Four firefighters and one civilian were injured after a grass fire erupted in Thornton, Colorado, prompting the emergency evacuation of a neighboring high school and the temporary closure of a major highway outside Denver. The rapidly spreading blaze burned 10 acres before being contained, with several businesses sustaining damage but no residential structures lost.

Why it matters

The fire highlights the growing threat of wildfires in the Denver metro area, which has been plagued by red flag conditions including high winds, low humidity, and warm temperatures that contribute to extreme fire behavior. This incident underscores the need for continued vigilance and preparedness as climate change increases the risk of such events.

The details

The vegetation fire broke out quickly around 11:30 a.m. in the area of Huron Street and 84th Avenue, burning between a neighborhood and businesses. A coalition of regional fire departments and first responders contained the blaze by 2:30 p.m., though several businesses sustained damage. The fire threatened Pinnacle Charter High School, which was evacuated, and prompted door-to-door evacuations in a nearby neighborhood. Interstate 25 was also temporarily closed due to smoke conditions.

  • The fire broke out around 11:30 a.m. on February 26, 2026.
  • The blaze was contained by 2:30 p.m. the same day.

The players

Thornton Fire Department

The local fire department that responded to and contained the grass fire.

Pinnacle Charter High School

The neighboring high school that was evacuated due to the proximity of the fire.

Thornton Fire Chief Stephen Kelley

The fire chief who provided updates on the incident and response efforts.

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What they’re saying

“The outcome of this fire, as challenging as it was, I would like to highlight, we lost no residential structures as a result of this fire.”

— Thornton Fire Chief Stephen Kelley (foxweather.com)

“To the community, I appreciate very much the rapid response from our residents to evacuate the neighborhood, so our crews could get in the area and perform fire suppression operations. This was a dynamic, rapidly spreading event that challenged many of the departments in the North area [near the neighborhood].”

— Thornton Fire Chief Stephen Kelley (foxweather.com)

What’s next

The cause of the fire is still under investigation by authorities.

The takeaway

This incident underscores the growing threat of wildfires in the Denver metro area due to climate change-driven conditions like high winds, low humidity, and warm temperatures that contribute to extreme fire behavior. It highlights the need for continued vigilance, preparedness, and coordinated emergency response efforts to protect communities from such events.