Heavy Snow — Judith Basin County and Judith Gap, Montana

2025-12-11 to 2025-12-12 · Judith Basin County and Judith Gap, Montana

Event narrative

A coop observer in Stanford and the public near Buffalo observed snow in excess of 6 inches, with the highest amount (8 inches) near Buffalo. Start time is estimated.

Wider weather episode

An initial Canadian cold front brought a much colder airmass southward through North-central Montana to nearly the I-90 corridor on the 11th. As a mid level warm front overran this airmass, instances of heavy snow were observed from the 12th into the 13th. Cold air near the surface and warm nose aloft between the Helena area and Townsend area resulted in significant icing the morning of the 12th.

Source: NOAA Storm Events Database, event_id 1300728. Narrative written by the NWS forecast office that issued the report.