Winter Weather — San Juan River Basin, Colorado

2023-01-01 to 2023-01-02 · San Juan River Basin, Colorado

Event narrative

Generally 4 to 8 inches of snow fell across the area with locally higher amounts of up to a foot reported.

Wider weather episode

Moisture associated with a landfalling moderate Atmospheric River reached western Colorado, riding on a 120-130 knot jet aloft. Perturbations in the northwest flow associated with this jet combined with favorable orographics to result in moderate to heavy snow across the mountains. Light to moderate snow also fell in some of the valley areas.

Source: NOAA Storm Events Database, event_id 1062890. Narrative written by the NWS forecast office that issued the report.