Avalanche — Eastern Lemhi County, Idaho

2017-02-04 · Eastern Lemhi County, Idaho

Event narrative

Warm weather and rain helped prime conditions for multiple snow slides that covered roads in Lemhi county. The Idaho Transportation Department reported one 100 ft wide and 10 ft high snow slide on Hwy 93 north of Salmon, ID that completely blocked the road for 1.5 hours. Four other smaller slides caused roads to be reduced to one lane, and heavy equipment was needed to clear snow.

Wider weather episode

Moist warm air moving over the Northern Rockies brought heavy snow and freezing rain to parts of central Idaho. Multiple snow slides were reported in Lemhi county during this event.

Source: NOAA Storm Events Database, event_id 680278. Narrative written by the NWS forecast office that issued the report.