Alert archive / Colorado / Frost Advisories in 2025
Frost Advisory 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this frost advisory at Oct 17, 2025, 1:34 PM MDT for 7 counties in Colorado. It took effect at Oct 18, 2025, 10:00 PM MDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Oct 17, 2025, 1:34 PM MDT (19:34 UTC)
- In effect from
- Oct 18, 2025, 10:00 PM MDT
- Expired
- Oct 19, 2025, 8:00 AM MDT
- In force
- 10 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Jefferson County, CO
The radar
The Denver radar (KFTG), 29 km from the middle of the area, began a volume at 19:34 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 17, 1:34 PM MDT | Freeze Watch | BOU | Adams, Arapahoe, Douglas, Elbert, Larimer, Lincoln and 6 more | 13 hr |
| Oct 17, 1:39 PM MDT | Fire Weather Watch | BOU | Arapahoe, Boulder, Broomfield, Clear Creek, Douglas, Elbert and 4 more | 24 hr |
Nearby
Frost Advisories in Colorado, 2025Every frost advisory 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.