Heavy Snow — Southern Clearwater Mountains, Idaho

2019-02-12 to 2019-02-13 · Southern Clearwater Mountains, Idaho

Event narrative

A prolonged period of moderate to heavy snowfall impacted travel on Highway 12 over Lolo Pass were close to 2 feet of snowfall was observed.

Wider weather episode

A plume of subtropical moisture interacted with an arctic air mass leading to a prolonged period of snowfall.

Source: NOAA Storm Events Database, event_id 805539. Narrative written by the NWS forecast office that issued the report.