Alert archive / Colorado / Winter Storm Warnings in 2025

Winter Storm Warning 8, NWS Denver/Boulder, CO

December 26, 2025Grand County, Jackson County, Colorado

NWS Denver/Boulder, CO issued this winter storm warning at Dec 26, 2025, 7:13 AM MST for Grand County, Jackson County, Colorado. It took effect at Dec 27, 2025, 12:00 AM MST. It was in force for 29 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: Dec 26, 2025, 7:13 AM MST (14:13 UTC)
In effect from: Dec 27, 2025, 12:00 AM MST
Expired: Dec 28, 2025, 5:00 AM MST
In force: 29 hr
Issued by: NWS Denver/Boulder, CO

Counties Grand County, CO, Jackson County, CO

The radar

The Cheyenne radar (KCYS), 147 km from the middle of the area, began a volume at 14:18 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 storm 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 winter storm warning went out at Dec 26, 4:04 AM MST, 3 hours 9 minutes earlier.

Area forecast discussion, Dec 26, 4:04 AM MST, 3 hours 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 26, 2:40 PM MST	Winter Weather Advisory	BOU	Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more	44 hr

Nearby

Winter Storm Warnings in Colorado, 2025 Every winter storm 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.