Alert archive / Colorado / Red Flag Warnings in 2023

Red Flag Warning 18, NWS Denver/Boulder, CO

August 21, 202311 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Aug 21, 2023, 2:53 AM MDT for 11 counties in Colorado. It took effect at Aug 21, 2023, 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 21, 2023, 2:53 AM MDT (08:53 UTC)
In effect from
Aug 21, 2023, 12:00 PM MDT
Expired
Aug 21, 2023, 7:00 PM MDT
In force
7 hr
Issued by
NWS Denver/Boulder, CO

Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Washington County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 34 km from the middle of the area, began a volume at 08:56 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 2:44 AM MDTHeat AdvisoryBOUAdams, Arapahoe, Broomfield, Denver, Douglas, Logan and 4 more17 hr

Nearby

Red Flag Warnings in Colorado, 2023Every red flag warning in 2023

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.