Dense Fog — Central and Southern Valley, Montana

2025-11-27 · Central and Southern Valley, Montana

Event narrative

The Glasgow airport ASOS site (KGGW) recorded dense fog with visibility of 1/4 mile or worse for about 3 hours on the 27th.

Wider weather episode

Arctic cold temperatures from the north combined with a relatively moist airmass to create areas of dense fog for portions of northeast Montana.

Source: NOAA Storm Events Database, event_id 1296286. Narrative written by the NWS forecast office that issued the report.