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WWUS85 KTFX 201426
SPSTFX

Special Weather Statement
National Weather Service Great Falls MT
726 AM MST Thu Nov 20 2025

MTZ315-320-322-325-201630-
Upper Blackfoot and MacDonald Pass-
Big Belt, Bridger and Castle Mountains-
Elkhorn and Boulder Mountains-Madison River Valley-
Including the cities of Marysville, Lincoln, Flesher Pass,
MacDonald Pass, Trident, Maudlow, Battle Ridge Pass,
Bozeman Pass, Deep Creek Pass, Montana City, Clancy, Boulder,
Corbin, Wickes, Elk Park Pass, Homestake Pass, Cameron, Ennis,
Jeffers, McAllister, and Norris
726 AM MST Thu Nov 20 2025

...Patchy dense fog will continue over the Madison River Valley
and mountain passes across central and southwest Montana through
mid-morning...

Patchy dense fog will continue over the Madison River Valley and
mountain passes across central and southwest Montana through mid-
morning. Variable visibility down to a quarter mile can be
expected.

Those with travel plans this morning should be prepared for
highly variable road conditions, including visibility reductions
down to a quarter mile. Slow down and allow extra time to reach
your destination.

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