555
FXUS65 KPIH 231742
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
1042 AM MST Sun Nov 23 2025

.KEY MESSAGES...

- More patchy dense fog this morning.

- Remaining dry again today before a cold front on Monday.

- Continued unsettled pattern and turning colder through the
  Thanksgiving weekend.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 353 AM MST Sun Nov 23 2025

Another morning of low stratus and locally dense fog. While impacts
to visibility are fewer this morning, anyone traveling now through
later morning should still be prepared for the possibility of slick
spots on roadways and sudden reductions in visibility.

Daytime temperatures will be very similar to yesterday`s
temperatures, with mid to upper-40s across our valleys and 30s in
the mountains. Overnight temperatures tonight will run several
degrees warmer. Winds will remain light for one more day.

&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
Issued at 136 PM MST Sat Nov 22 2025

Fast moving shortwave drives across Idaho with cold front passage
during the day Monday. Impacts are still expected to remain minor
with light precipitation and snow accumulation focused mainly over
the higher terrain. Winds increase along and behind the front, with
speeds still expected to reach 25-30 mph and gusts around/over 40
mph especially across the Upper Snake Plain. There is still
uncertainty headed into the Thanksgiving holiday travel period, as
the ensemble clusters show signs of the next intermountain ridge
breaking down by Thanksgiving. By Friday, half of the clusters
depict a trough shifting into the western states while the other
half maintain a ridge over the coastal states or intermountain west.
 Either way, they all show some sort of a trough across or already
through the western states by the weekend, with nearly half of the
clusters depicting a deep trough similar to the operational GFS. It
is also fair to note that the slower or less amplified clusters
appear to favor the EC ensembles. The pattern stays somewhat
unsettled and trending colder into the weekend and early next week.
There is  potential for a much colder airmass early next week on the
periphery of the polar chill that may be headed for the north-
central states.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1042 AM MST Sun Nov 23 2025

IFR fog and low stratus still impacting the corridor between
PIH and BYI this morning, but satellite imagery shows
dissipation and trend should continue through about 20Z.
Upstream we are beginning to see high clouds work toward East
Idaho ahead of pair of shortwaves approaching the region.
Ceilings lower to 6k-10k ft overnight through Monday morning,
bringing SHSN to higher elevations. The only terminals that have
the potential for SHSN at this point may be SUN and DIJ after
12Z Monday, with the remaining terminals remaining dry. Winds
begin to increase mid- morning Monday as well, but the strongest
winds are expected Monday afternoon associated with passage of
the cold front.


&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SHORT TERM...Cropp
LONG TERM...DMH
AVIATION...DMH