Heavy Snow — Upper Blackfoot and Macdonald Pass, Montana

2025-04-01 · Upper Blackfoot and Macdonald Pass, Montana

Event narrative

SNotel equipment at Nevada Ridge estimated 13 inches new snowfall over 24 hours ending 8 PM April 1. Criteria time is estimated.

Wider weather episode

A more convective type of rain/snow transitioned to be more stratiform across the region as several embedded waves within broad cyclonic flow consolidated across the region. Uncertainty was high with this system, closely related to how quickly snow levels fell across the region. Several areas saw snow in excess of 10 inches, including a snotel estimating 17 inches new snow in Jefferson County.

Source: NOAA Storm Events Database, event_id 1257683. Narrative written by the NWS forecast office that issued the report.