Alert archive / Colorado / Red Flag Warnings in 2026

Red Flag Warning 50, NWS Denver/Boulder, CO

June 28, 202611 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Jun 28, 2026, 12:40 PM MDT for 11 counties in Colorado. It took effect at Jun 29, 2026, 12:00 PM MDT. It was in force for 9 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
Jun 28, 2026, 12:40 PM MDT (18:40 UTC)
In effect from
Jun 29, 2026, 12:00 PM MDT
Expired
Jun 29, 2026, 8:57 PM MDT
In force
9 hr
Issued by
NWS Denver/Boulder, CO

Counties Arapahoe County, CO, Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Lincoln County, CO, Park County, CO, Summit County, CO

The radar

The Denver radar (KFTG), 57 km from the middle of the area, began a volume at 18:42 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 Jun 27, 2:38 PM MDT, 22 hours 2 minutes earlier.

Area forecast discussion, Jun 27, 2:38 PM MDT, 22 hours 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 2:49 AM MDTFire Weather WatchBOUBoulder, Clear Creek, Douglas, Gilpin, Grand, Jefferson and 2 more10 hr

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.