377
FXUS65 KPIH 072046
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
146 PM MST Sun Dec 7 2025

.KEY MESSAGES...

- Light snow in the mountains this afternoon and tonight. Rain
  in some of the lower elevations

- Even warmer temperatures on Tuesday, approaching record
  warmth.

- Moderate to heavy snow for high elevations in the mountains
  and highlands Tuesday-Tuesday night. Windy Tuesday night
  through Wednesday night.

&&

.SHORT TERM /THROUGH MONDAY NIGHT/...
Issued at 146 PM MST Sun Dec 7 2025

Mild northwest flow continues through the short term (and
beyond). Next shortwave in train of features in place through
tonight, with precipitation impacting higher elevation zones.
Warm temperatures remain in place with many lower elevation
areas remaining above freezing even for overnight lows. Snow
levels remain high, 5000-6000 ft overnight tonight, rising to
6000-7000 ft during the day Monday. Liquid precipitation amounts
for this feature through overnight tonight are expected to
generally range 0.10-0.20" at western edges of the central
mountains and the higher elevations east of I-15, but could
range as high as 0.25-0.35", and as low as 0.05". Following a
relative break on Monday, the next feature arrives Monday night,
with similar precipitation amounts expected. Overall, the Snake
Plain should remain dry throughout the short term, but if a few
showers manage to develop, the precipitation should fall as
rain.

&&

.LONG TERM /TUESDAY THROUGH SATURDAY/...
Issued at 146 PM MST Sun Dec 7 2025

Main impact in the long term is the atmospheric river in place
Tuesday through Wednesday then easing off on Thursday.  Expect
at least a 50 percent chance of an inch of liquid precipitation
over the Sawtooths and Sun Valley region into the central
mountains.  Snow levels rising to above 7 thousand feet Tuesday
and above 8 thousand feet Wednesday so not expecting significant
travel impacts other than at pass level for the most part both days.
High temperatures both days mainly in the 40s mountains to lower to
mid 50s valleys significantly above seasonal normal.  Lows Tuesday
night 30s mountains and 40s valleys and lows Wednesday night again
in the 30s and 40s.  Expect very strong winds both Tuesday and
Wednesday especially in the Snake River Plain with 20 to 30 mph
sustained winds and gusts over 35 mph expected both days.  Not
expecting significant rain in lower elevations.   Will see mainly
dry conditions Friday through next Sunday with warm conditions
continuing through next weekend with high temperatures remaining in
the 40s and 50s so will continue to see the stretch of extremely
warm conditions continue.

&&

.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1037 AM MST Sun Dec 7 2025

Worst flying conditions likely at DIJ this afternoon and
overnight with the potential for MVFR to IFR conditions after
22Z with snow and low ceilings. Have VFR at all other sites
through 18Z Monday. Winds will likely increase overnight tonight
and Monday morning to sustained 10 to 20 knots at PIH, IDA and
BYI with gusts approaching 20 to 30 knots as well.

&&

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

&&

$$

SHORT TERM...DMH
LONG TERM...GK
AVIATION...GK