Dense Fog Advisory issued October 13 at 2:01PM MDT until October 14 at 12:00PM MDT by NWS Great Falls MT
Issue date: 2026-10-13T20:01+00:00
* WHAT...Highly variable visibility as low as one quarter of a mile in dense fog. * WHERE...Canyon Ferry Area, Gallatin Valley, and Missouri Headwaters. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Below freezing temperatures tonight may lead to a glaze of ice on surfaces, most notably on bridges and overpasses.
