Winter Storm — Big Hole Mountains, Idaho

2020-01-10 to 2020-01-15 · Big Hole Mountains, Idaho

Event narrative

A powerful winter storm brought heavy snow and very strong winds to the region. A trained spotter 4 miles west of Victor recorded 17.5 inches of snow through the 13th with the storm.

Wider weather episode

A major multi day storm affected all of southeast Idaho with very heavy snow, road closures, and school closings widespread. Five day snow totals exceeded a foot in many locations with as much as three feet in some mountain locations. Some high elevation SNOTEL sites exceeded 5 feet. Some of the road closures by the 11th and 12th were US Route 26 from Swan Valley to Ririe, interstate 15 from Dubois to the Montana state line, US Route 20 from Ashton to the Montana state line, Idaho Route 33 from Newdale to Tetonia, and Idaho route 32 from Ashton to Tetonia. Many Idaho school districts closed on the 13th and 14 as well.

Source: NOAA Storm Events Database, event_id 873729. Narrative written by the NWS forecast office that issued the report.