Thunderstorm Wind — Lewis and Clark, Montana

2025-07-02 · near (hln)helena Rgnl Arp, Lewis and Clark, Montana

Event narrative

ASOS station KHLN Helena Airport measured a 60 mph wind gust.

Wider weather episode

An upper level trough brought embedded shortwaves aloft that developed thunderstorms in the region. Storms on July 1st were concentrated in Southwest MT. Coverage of thunderstorms became widespread across the region July 2nd due to better shear and moisture. The main hazards with storms were severe wind gusts.

View location on OpenStreetMap → (46.6000, -111.9800)

Source: NOAA Storm Events Database, event_id 1266219. Narrative written by the NWS forecast office that issued the report.