Winter Storm — Helena Valley, Montana

2023-10-24 to 2023-10-25 · Helena Valley, Montana

Event narrative

Many reports were received from the Helena Valley meeting winter storm criteria. Reports ranged from 6 inches all the way up to 13.4 inches in the Helena area. Official NWS obs at the Helena Airport measured 6.5 inches storm total snow.

Wider weather episode

A robust upper trough, embedded waves, and jet energy supported two rounds of snow across North-central and Southwest Montana October 25-27, 2023. The first round, Oct 25 & 26, was more impactful to North-central and Central Montana, while the second round of snow, Oct 26 & 27, was more impactful to Southwest through Central Montana.

Source: NOAA Storm Events Database, event_id 1138670. Narrative written by the NWS forecast office that issued the report.