733
FXUS65 KMSO 091103
AFDMSO

Area Forecast Discussion
National Weather Service Missoula MT
403 AM MST Sun Nov 9 2025

.DISCUSSION...


KEY MESSAGES:

- Patchy fog and low stratus today

- Increased winds and scattered showers on Monday into Tuesday

- Rebounding ridge of high pressure Wednesday into Friday


A ridge of high pressure will be the dominant feature over the
Northern Rockies today. This ridge will cause stable conditions
allowing for the development of patchy fog and low stratus today
into Monday morning.

A weak disturbance will be pushing across the region on Monday
into Tuesday. This feature will flatten the ridge of high pressure
causing increased westerly winds. The strongest winds will be
mainly confined to the higher terrain, especially along the
Continental Divide. The feature will bring a band of scattered
showers southward out of Canada late Monday into Tuesday morning.
The best shower activity will be across northwest Montana.
Snow levels will be fairly high for this time of year and moisture
will be limited, so snow will be restricted mainly to the higher
terrain.

The ridge of high pressure will rebound back over the Northern
Rockies Wednesday. A large trough of low pressure is anticipated
to move into the region by latter part of the work week into the
weekend. The latest model guidance diverge on the timing of the
frontal passage. The timing of the cold front is sometime between
Thursday through Friday, but the overall message is to anticipate
cooler temperatures, increased shower activity and periods of
gusty westerly winds.


&&

.AVIATION...High pressure will be dominant feature over the
Northern Rockies for the next 24 hours. Patchy fog and low stratus
will be a concern in the valleys of north central Idaho and west
central Montana. The best potential for fog will be near rivers
and large body of water. Winds are anticipated to be relatively
light and variable.

&&

.MSO WATCHES/WARNINGS/ADVISORIES...
MT...None.
ID...None.
&&

$$