Heavy Snow — Snowy and Judith Mountains, Montana

2023-04-18 to 2023-04-20 · Snowy and Judith Mountains, Montana

Event narrative

A co-op observer measured 14 inches new snow over 24 hours ending 7AM MDT 4/19. A public report of 24 inches was received southeast of Lewistown in the Snowy Mountains foothills. Additionally, the Crystal Lake Snotel estimated 33 inches new storm total snow for the event.

Wider weather episode

A pair of upper lows became cut off over southern and eastern Montana extending south and east into the Dakotas and Wyoming from a negatively-tilted trough centered off the Pacific Northwest coastline. This cut-off low spun in place through Thursday the 20th. The result was for significant accumulating snow in eastern portions of North-central Montana, with additional heavy snow across much of the rest of Southwest and Central MT.

Source: NOAA Storm Events Database, event_id 1093966. Narrative written by the NWS forecast office that issued the report.