Headline:
Dense Fog Advisory issued October 12 at 12:25PM MDT until October 13 at 12:00PM MDT by NWS Great Falls MT
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
October 12, 2026 - 11:25am
Expires:
October 13, 2026 - 5:00am
Description:
* WHAT...Visibility as low as one quarter of a mile in dense fog.
* WHERE...Portions of central, north central, and southwest Montana.
* WHEN...From 9 PM this evening to noon MDT Tuesday.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Below freezing temperatures may lead to a
glaze of ice on surfaces, most notably on bridges and overpasses.
Instruction:
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
Area Description:
Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Hill County; Northern Blaine County; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Helena Valley; Meagher County Valleys; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley
Forcast Office:
NWS Great Falls MT
Sender:
w-nws.webmaster@noaa.gov