Red Flag Warning Issued for Denver Metro and I-25 Urban Corridor Through Tuesday Evening
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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The National Weather Service has issued a Red Flag Warning for the Denver metro area and surrounding counties due to high winds and low humidity, creating critical fire conditions.
Read this weather record in 30 seconds
- Record type
- Red Flag Warning
- Affected area
- Denver Metro and I-25 Urban Corridor, Colorado
- Issued
- April 6, 2026
- Issuing authority
- NWS Denver
Fire-weather notices describe conditions that can support rapid fire spread; they do not report that a fire is present. Check local emergency sources for any active incident.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Denver Metro and I-25 Urban Corridor, Colorado.
Alert Details
The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity. This alert indicates that critical fire weather conditions are either occurring now or will develop shortly. The combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
Affected Areas
The warning covers the I-25 Urban Corridor and surrounding regions, specifically including:
- Larimer County (below 6000 feet) and Northwest Weld County
- Boulder and Jefferson Counties (below 6000 feet) and West Broomfield County
- North Douglas County (below 6000 feet), Denver, West Adams, and Arapahoe Counties
- East Broomfield County
- Central and South Weld County
This impact area includes Fire Weather Zones 238, 239, 240, and 243.
What You Should Do
Residents in the affected areas are urged to avoid outdoor burning and any activity that may produce a spark and start a wildfire. Conditions will be favorable for rapid fire spread. Residents should prepare for potential fire hazards and monitor local conditions closely.
Expected Conditions
- Winds: West winds ranging from 10 to 20 mph, with gusts reaching up to 30 mph.
- Relative Humidity: Levels are expected to drop as low as 13 percent.
- Impacts: Critical fire weather conditions will facilitate the rapid spread of any fires that ignite.
Timeline
The Red Flag Warning is effective starting at 12:00 PM MDT today, March 10, 2026. The alert is scheduled to remain in effect until 7:00 PM MDT this evening.
Original source: NOAA Official Notice ↗
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