624
FXUS65 KCYS 272023
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
123 PM MST Thu Nov 27 2025

.KEY MESSAGES...

- Two cold fronts will move through the area this weekend,
  bringing much colder temperatures and chances for minor snow
  accumulations.

&&

.SHORT TERM /THROUGH FRIDAY NIGHT/...
Issued at 123 PM MST Thu Nov 27 2025

For this Thanksgiving Day, no weather concerns are expected if you
or your family have any travel plans across the CWA. Overall, quiet
conditions with little to no precipitation chances and relatively
light winds. One caveat, hi-res guidance brings in a possibility of
widely scattered light snow showers, primarily west of the I-25
corridor, now into the evening hours, diminishing overnight. Little
to no snow accumulations anticipated, while temperatures will be
seasonal as highs climb into the mid 40s and lows tonight dip into
the 20s.

What about Friday and all the shopping that I need to do? Well, I
got good news, expect relatively benign weather conditions across a
majority of the CWA throughout the day. There is the possibility of
a few scattered light snow showers ahead of an arctic front that
will dive south, with the greatest threat west of the I-25 corridor.
Some of this precipitation may become a mix (rain/snow) as a surge
of warmer temps in the mid-levels move in and helps surface
temperatures soar into the 50s for many locations. Strongest gust
potential will be in the typical wind-prone areas in southeast
Wyoming, high wind thresholds will not occur as guidance fails to
show the threat. Flip the light switch heading into the overnight
hours as we are anticipating some changes with an arctic front
diving south across the region. First, ahead and with the passage of
the front, guidance depicts decent parameters for the likelihood of
snow squalls, with the greatest threat west of Cheyenne. As the
front passes through, widespread snow is possible as winds shift to
the north which allows a surge of cold Canadian air to move into the
CWA, making temperatures plummet Friday night as lows bottom out in
the low teens to possible single digits in a few areas. Snow
accumulations appear to be minor in the Cheyenne area, generally
less than an inch, while higher amounts to the west and north, with
many places seeing 1 to 2 inches, greater at higher elevations.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
Issued at 123 PM MST Thu Nov 27 2025

An active upper level pattern is expected this
weekend and lasting through the work week. A train of troughs will
move through the Intermountain West to give renewing snow chances on
an almost daily basis. Saturday morning, a weak shortwave will be
pushing east into the Northern Plains tapering off the snowfall
throughout the morning. By Saturday afternoon all snowfall should be
ceased as dry air filters in to give us a temporary break. Sunday
morning another system will start pushing into the Intermountain
West to give snow chances to the higher elevations and mountainous
regions mainly in Carbon and Albany county. There`s some uncertainty
if snow will reach the lower elevations due to the layer of dry
indicated on the model soundings. However, some of ensemble members
from the Euro and GEFS still show some light accumulations occurring
overnight when temperatures will be colder and easier to saturate.
However, during this time the system will be continuing to dive
south into the four corners region taking majority of the moisture
with it. If snow were to occur the best locations look to be along
the I-80 corridor before midnight. Monday through Tuesday afternoon
a short lived ridge wobbles east from the West coast to set up a
high pressure system over the Intermountain West. This ridge will
allow some slightly warmer temperatures aloft to move over the
region for a slight temperature boost. However, starting Tuesday
afternoon another weak shortwave flattens the ridge to resume the
active pattern until the end of the week. With the exception of
Monday and Tuesday, temperatures look to remain in the 20`s during
the day and drop into the teens and single digits at night. For
Monday and Tuesday, temperatures look to be a little higher in the
30`s with some areas possibly reaching the 40`s by Tuesday with
overnight temperatures reaching the 20`s for most of the areas.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1020 AM MST Thu Nov 27 2025

VFR conditions expected throughout the duration of this TAF period
across all terminals. Winds will generally be light except at KRWL,
where west southwest winds gusting to 25 knots are possible through
00Z Friday, diminishing thereafter. Cloudy skies will dominate the
TAF period; however, CIGs and VIS will remain VFR. With these cloudy
skies, can`t rule out an isolated snow shower, if one were to pass
over a terminal, expect VIS to decrease briefly.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.

&&

$$

SHORT TERM...RZ
LONG TERM...MM
AVIATION...RZ