Heavy Snow — Fergus County Below 4500ft, Montana

2023-04-18 to 2023-04-19 · Fergus County Below 4500ft, Montana

Event narrative

Multiple trained spotters and public reports in the Lewistown area reported heavy snow. A trained spotter measured 20 inches new snow storm total 2 miles SE of Lewistown. A trained spotter near Hilger reported 7 inches storm total snow. Public reports of a foot and a half of new snow in Lewistown were also received. The COOP Observer in Grass Range reported an official snow amount of 9 inches 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 1093967. Narrative written by the NWS forecast office that issued the report.