Dense Fog — Central Yampa River Basin, Colorado

2025-10-07 · Central Yampa River Basin, Colorado

Event narrative

Patchy fog developed over the Yampa River Basin during the morning of October 6. The KCAG ASOS at the Craig-Moffat County Airport reported decreasing visibility for about 4 hours overnight, including about half an hour of visibility dropping to or below 1/4 mile shortly after sunrise. No reports of injuries, damages, or fatalities were received.

Wider weather episode

Weak surface moisture moved through the region around a southern CONUS high pressure system. Skies remained clear due to a dry mid-level atmosphere though. Overnight temperatures fell to near or below freezing across much of northern Colorado as a result, leading to the formation of patchy dense fog.

Source: NOAA Storm Events Database, event_id 1298336. Narrative written by the NWS forecast office that issued the report.