Avalanche — Sawtooth Mountains, Idaho

2017-01-09 to 2017-01-11 · Sawtooth Mountains, Idaho

Event narrative

Highway 75 was closed due to an avalanche from extremely heavy snow from Stanley to Clayton from the 9th through the 11th.

Wider weather episode

A long dawn out atmospheric river event brought a variety of impacts to southeast Idaho including extremely heavy mountain snow, valley snow then rain on snow leading to flooding and roads covered with ice in the Snake River Plain, and many mountain avalanches. Many roads were closed for extended periods due to the heavy snow and avalanches. Custer County was declared a disaster area due to the prodigious snow amounts. An emergency declaration was signed in Cassia County due to the flooding.

Source: NOAA Storm Events Database, event_id 677040. Narrative written by the NWS forecast office that issued the report.