High Winds Topple Trees, Cut Power Across Lewis and Clark County

Strong storm force winds moved across western and central Montana on December 17, leaving a trail of toppled trees, damaged vehicles and disrupted services that touched communities in Lewis and Clark County. Utility operators reported widespread outages from northwest Montana to Livingston, and the Flathead Electric Cooperative alone reported 30,625 customers without power at the height of the event. Social media feeds showed semitrucks blown over, flattened trees and at least one elementary school roof in Missoula with portions scraped off by the wind.

Meteorologists warned of additional high speed gusts that day and forecast models indicated winds could reach up to 100 miles per hour in places along the Rocky Mountain Front. The second wave of gusts arrived in the afternoon and forecasters said the Hi Line and central valleys remained at risk for more severe conditions. With roads littered by debris and visibility reduced by blowing branches, travel became hazardous across the region.

Helena Public Schools announced early release so students could avoid dismissal during the most severe afternoon winds, citing concerns for safety for students who walk home or ride buses in dangerous conditions. City urban forestry supervisor Chris Daly urged residents to carefully assess downed trees and branches for proximity to power lines, and to keep clear of any scene where wires are visible. “At this point I have no idea,” Daly said when asked how long cleanup could take. He noted that after an October storm it took crews about three weeks to finish clearing damage.

City and county crews planned to begin clearing obstructions as soon as conditions were safe, and residents were advised to remove small branches from sidewalks and roads only where no hazards existed. Officials specifically discouraged use of chainsaws on downed trees that might be entangled with live wires. Photographs from Helena documented extensive limb and infrastructure damage and matched accounts of service disruptions in neighboring counties.

The storm underscores the county need to maintain response capacity for extreme wind events, from emergency sheltering and school dismissals to utility restoration and urban forestry resources. Residents should monitor local alerts, report downed lines to their provider and avoid unsafe cleanup practices until professionals can secure affected areas.