Alert archive / Colorado / Red Flag Warnings in 2025

Red Flag Warning 23, NWS Denver/Boulder, CO

August 6, 20254 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Aug 6, 2025, 2:47 PM MDT for 4 counties in Colorado. It took effect at Aug 7, 2025, 12:00 PM MDT. It was in force for 8 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 6, 2025, 2:47 PM MDT (20:47 UTC)
In effect from
Aug 7, 2025, 12:00 PM MDT
Expired
Aug 7, 2025, 8:00 PM MDT
In force
8 hr
Issued by
NWS Denver/Boulder, CO

Counties Grand County, CO, Jackson County, CO, Park County, CO, Summit County, CO

The radar

The Denver radar (KFTG), 131 km from the middle of the area, began a volume at 20:48 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 5, 2:57 PM MDT, 23 hours 50 minutes earlier.

Area forecast discussion, Aug 5, 2:57 PM MDT, 23 hours 50 minutes before
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 2:47 PM MDTFire Weather WatchBOUBoulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more18 hr
Aug 6, 3:40 PM MDTSpecial Weather StatementBOUArapahoe, Denver, Douglas65 min

Nearby

Red Flag Warnings in Colorado, 2025Every red flag warning in 2025

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.