Red Flag Warning in Boulder County, Colorado
Issued by the National Weather Service and archived by Claims Pages
EXPIRED
4/21/2026 11:53:00 PM (UTC)
Urgency: Expected
Severity: Severe
Certainty: Likely
4/21/2026 11:53:00 PM until 4/22/2026 3:00:00 PM
* AFFECTED AREA...Fire Weather Zone 215.
* TIMING...From 10 AM Wednesday to midnight MDT Wednesday night.
* WINDS...West 20 to 30 mph with gusts up to 45 mph.
* RELATIVE HUMIDITY...5 to 8 percent.
* IMPACTS...Conditions will be favorable for rapid fire spread.
Avoid outdoor burning and any activity that may produce a
spark and start a wildfire.
