Alert archive / Colorado / Winter Weather Advisories in 2025
Winter Weather Advisory 21, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this winter weather advisory at Mar 31, 2025, 3:44 AM MDT for 9 counties in Colorado. It took effect at Mar 31, 2025, 9:00 PM MDT. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Mar 31, 2025, 3:44 AM MDT (09:44 UTC)
- In effect from
- Mar 31, 2025, 9:00 PM MDT
- Expired
- Apr 2, 2025, 6:00 AM MDT
- In force
- 33 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 102 km from the middle of the area, began a volume at 09:45 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 winter weather advisory 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 winter weather advisory went out at Mar 31, 12:26 AM MDT, 3 hours 18 minutes earlier.
Area forecast discussion, Mar 31, 12:26 AM MDT, 3 hours 18 minutes before
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Winter Weather Advisories in Colorado, 2025Every winter weather 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.