High Wind — Eastern Lemhi County, Idaho

2025-12-17 · Eastern Lemhi County, Idaho

Event narrative

Lemhi County County dispatch reported at least 3 trees were down. There were multiple weather stations that reported wind gusts above 70 mph for multiple hours. The Idaho Power station on Sandy Creek Road recorded a sustained wind speed of 48 mph with a peak gust of 76 mph at 0900MST.

Wider weather episode

On December 17, 2025, a historic high wind event driven by a strong cold front undercutting an atmospheric river brought hurricane-force winds to North Central Idaho. Saturated, extremely wet soils severely weakened root structures, which substantially exacerbated the toppling of countless trees and power poles. The region experienced devastating wind gusts exceeding 70 mph.

The storm caused catastrophic damage to utility infrastructure, resulting in what Clearwater Power described as the most widespread outage and system damage the cooperative has ever experienced. The intense winds and falling timber damaged equipment, substations, and every single main distribution line across their expansive 5,000-square-mile electric system all at once. Fallen trees completely blocked roads and access points, while additional snow and wind following the initial event severely hampered repair progress. Outages persisted for over a week for some residents, with crews and mutual aid partners quadrupling the normal workforce to work through the Christmas holiday to fully restore power across the rugged landscape.

Source: NOAA Storm Events Database, event_id 1307707. Narrative written by the NWS forecast office that issued the report.