Alert archive / Colorado / Red Flag Warnings in 2026
Red Flag Warning 56, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Aug 4, 2026, 12:20 PM MDT for 8 counties in Colorado. It took effect at Aug 5, 2026, 12:00 PM MDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 4, 2026, 12:20 PM MDT (18:20 UTC)
- In effect from
- Aug 5, 2026, 12:00 PM MDT
- Expired
- Aug 5, 2026, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 108 km from the middle of the area, began a volume at 18:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this red flag warning went out at Aug 3, 5:54 PM MDT, 18 hours 26 minutes earlier.
Area forecast discussion, Aug 3, 5:54 PM MDT, 18 hours 26 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 1:39 AM MDT | Fire Weather Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more | 11 hr |
| Aug 4, 2:10 PM MDT | Special Weather Statement | BOU | Teller | 20 min |
| Aug 4, 2:32 PM MDT | Special Weather Statement | BOU | Teller | 28 min |
Nearby
Red Flag Warnings in Colorado, 2026Every red flag warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.