Heavy Snow in Helena Valley, Montana

Heavy Snow October 12, 2025 – October 13, 2025 · Helena Valley, Montana

What the National Weather Service wrote

The public and several trained spotters relayed reports of 6+ inches new snow from the evening of the 11th into the morning of the 12th. The peak report was 10.8 inches new snow in the foothills on the north side of Mt Helena.

The wider storm

Low-level northeasterly upslope flow at the surface combined with a relatively warm/moist airmass overrunning the cooler surface airmass to result in heavy snow, mostly along the Rocky Mountain Front and into Helena.

Source: NOAA Storm Events Database, event 1294335. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.