898
FXUS65 KBYZ 250951
AFDBYZ

Area Forecast Discussion
National Weather Service Billings MT
251 AM MST Tue Nov 25 2025

.KEY MESSAGES...

- A disturbance over eastern MT will bring up to 2 inches of snow
  and gusty winds 40-55 mph through this morning. Locally higher
  gusts over the higher hills are possible.

- Near to below normal temperatures Tuesday through Friday.
  Periods of light rain/snow possible (20-50%) this evening
  through Friday.

- Even colder air arrives Friday night with the potential for the
  first significant snowfall of the season across the area
  through Sunday. Stay tuned if you have Holiday weekend travel
  plans!


&&

.DISCUSSION...

Today through Monday...

Strong subsidence and a tight pressure gradient behind a low
pressure system is bringing gusty winds to southeast MT. Snow is
expected to fill in in southeast MT bringing up to two inches of
snow. Those traveling through the morning hours should use caution
as reduced visibility is expected. Conditions behind the front
will leave behind cooler temperatures with highs in the 30s and
low 40s expected today through Friday. The mid level pattern will
transition to northwest flow as soon as this evening, with
overrunning energy and pushes of Pacific moisture creating daily
chances for precipitation through Friday. Late this evening, a
jet will move into the west allowing for snow showers, spreading
east into the day Wednesday. Generally less than half an inch of
accumulation of snow is expected across lower elevations and the
foothills, with around 4-8 inches in the mountains. Into
Thursday, weak energy from a departing jet and Pacific moisture
will bring some precipitation. In fact, ensembles are showing
precipitable water values around 150-200% above normal for this
time period which could enhance precip amounts. With slightly
warmer temperatures from warm air advection Thursday, mixed
precipitation types will need to be watched closely. Models seem
to have come into have come into agreement that a cold front will
move through during the day Friday, ushering in more precipitation
and much cooler temperatures. Currently, there are moderate to
high chance for at least 6 inches of snow for the mountains and
foothills Thursday night through Saturday. Around a 20-40% chance
exists for the lowers elevations. Additional rounds of
precipitation are possible through the weekend, but there is still
some disagreement amongst the models. High temperatures for the
weekend will be in the teens to 20s, with Sunday and Monday
morning being the coolest. Currently, There is a 40-60% chance for
the region to see Monday morning low temperatures at or below
zero. Temperatures will begin to transition slightly warmer as
heights build back in from the west. Highs Monday are forecast to
be in the teens to low 30s. TS


.AVIATION...

Breezy winds and light snow across southeast MT will continue to
produce blowing snow and reduced visibility across most terminals.
Both winds and snow will slowly lighten up throughout the morning,
and predominant flight conditions are expected to return to VFR by
the late morning, persisting through the rest of the day. Vertz

&&

.PRELIMINARY POINT TEMP/POPS...

    Tdy Wed     Thu     Fri     Sat     Sun     Mon
-------------------------------------------------------
BIL 038 026/042 028/039 028/036 016/026 007/018 003/025
    0/U 12/J    12/W    46/W    64/J    53/J    11/B
LVM 037 025/044 028/046 027/039 015/030 009/023 005/031
    0/B 45/J    23/W    47/W    54/J    52/J    11/B
HDN 038 021/041 024/043 025/036 015/027 006/019 901/025
    0/U 12/W    12/W    57/W    75/J    65/J    22/J
MLS 035 019/036 019/036 023/033 014/023 006/016 902/022
    1/N 00/E    00/E    44/J    43/J    42/J    11/B
4BQ 034 019/037 021/038 025/034 017/027 009/018 002/023
    1/N 01/E    00/E    24/J    43/J    43/J    11/B
BHK 030 012/034 014/033 017/029 010/021 002/016 904/021
    7/J 00/B    00/B    24/J    42/J    32/J    11/B
SHR 035 016/038 021/044 022/039 012/028 006/020 901/026
    0/Q 02/J    11/E    26/W    74/J    65/J    22/J

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory in effect until 11 AM MST this
      morning FOR ZONES 33-37.
WY...None.

&&

$$
weather.gov/billings