470
WWUS85 KTFX 061554
SPSTFX

Special Weather Statement
National Weather Service Great Falls MT
954 AM MDT Mon Oct 6 2025

MTZ319-323-061800-
Helena Valley-Canyon Ferry Area-
Including the cities of Helena, Toston, Townsend, and Winston
954 AM MDT Mon Oct 6 2025

...Patchy dense fog in the Helena area and along portions of
highway 287 near Canyon Ferry Lake through the morning hours...

Patchy fog dense fog continues over portions of the Helena Valley
and along sections of highway 287 bordering Canyon Ferry Lake,
especially on the north side of the lake. This will continue for
the next couple of hours before dissipating early this afternoon.

Those traveling in the Helena Valley and along highway 287 in
between Three Forks and Helena should be prepared for highly
variable conditions across short distances with visibility falling
as low as a quarter mile or less. Slow down and allow extra time
to reach your destination.

$$