Dense Fog in Utah, December 1, 2025

Area Forecast Discussion
National Weather Service Grand Junction CO
317 AM MST Mon Dec 1 2025

.KEY MESSAGES...

- Winter Weather Advisories are expected to trail off this
  morning, but mountain roadways could still be challenging for
  the commute.

- Skies clear and high temperatures today trend down 5-10
  degrees.

- Another winter storm comes into view Tuesday afternoon into
  Thursday, with more snowfall for mountains.

- Cool, unsettled conditions stick around into the weekend.

&&

.SHORT TERM /THROUGH TUESDAY/...
Issued at 311 AM MST Mon Dec 1 2025

Clear and cold conditions are sweeping in behind the cold front this
morning. Orographic snow showers continue on many of our mountains
this morning, but accumulations are negligible at this point. Some
area roadways remain snow covered in the cold air settling across
the region. Morning commuters should check local conditions before
setting out for work. Winter Weather Advisories will likely drop off
much sooner than the noon timeline given initially, as the drier and
subsident air mass pushes into the region. Sunny skies should return
across the region by lunch, with some stray cloud cover hanging on
the mountains into afternoon. Winds will remain north and west
today, with temperatures 5-10 degrees colder in one of the coldest
air masses of the season. As skies clear out tonight, this should
deliver frigid overnight lows to our mountain basins surrounded by
fresh snowpack.

Quiet weather will be short-lived, as we queue up another cold front
for Tuesday and beyond. This one looks very similar to yesterday's
system. An arcing ridge in the Pacific, offshore of the CONUS, is
sending a battery of digging jet maxes down the PACNW into the Great
Basin. This comes along with the deep cold pool oozing out of
Continental Canada. This bodes well for snow production from any
moisture we can tap. While early indications for Tuesday and beyond
are not as bullish on moisture as this last system, there will still
be measurable snow for the mountains. Light snow across northeast
Utah and northwest Colorado initiates Tuesday morning, then spreads
south by afternoon. At the moment, this looks good for a couple
inches of new snow on the mountains by sunset Tuesday evening.(and
more later) Afternoon highs will trend down a couple degrees again
on Tuesday beneath gray skies and additional precipitation.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Issued at 158 PM MST Sun Nov 30 2025

And the wave train doesn't end as we look upstream Tuesday. An
upper level trough will be located over western Montana and
eastern Idaho early Tuesday. Ahead of this feature will be a
shortwave that will just clip our CWA bringing some light snow
to the eastern Uintas, and northern valleys and mountains. Don't
look for much accumulation though, that won't start until the
main upper level trough and the next weak, cold front pushes
through. Ensembles are in fairly good agreement with this system
even this far out but that's not to say we couldn't see some
changes over the next few days. That being said, the forecast is
calling for 2 to 5 inches over the northern mountains, Flat
Tops and portions of the central mountains with lesser amounts
south. Previous, similar systems have come in with amounts like
these and then as we get closer to the event, amounts bump up so
there's always that chance. Either way, much of the CWA will
see some form of precip Tuesday morning through Thursday.

And wouldn't you know, the wave train continues Friday into the
weekend as pieces of energy move through northwesterly flow.
You folks up in Steamboat Springs, you know what this means.
Favorable orographics, not to mention stronger waves moving
through, over a prolonged period may bring some decent snowfall
amounts to the Elkheads and Park Ranges. We are still a ways
out, however, so take this with a grain of salt. Still,
something to look forward to. As far as high temperatures are
concerned, they will be on the cool side with highs generally
below more normal early December values across the region.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1009 PM MST Sun Nov 30 2025

The cold front has mostly exited the region to the southeast.
Behind the front, lingering snow showers and low ceilings will
continue behind the front through about 12Z, diminishing
northwest to southeast overnight before the ceilings lift to
VFR levels. Look for improving conditions above ILS breakpoints
at KHDN by 08Z, KGJT, KRIL and KEGE by 10Z, KMTJ and KTEX by
12Z, and KGUC by 14Z. Thereafter, expect clear skies and VFR
conditions across the region through 06Z.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...

CO...Winter Weather Advisory until noon MST today for COZ004-009-
     010-012-013-017>019.
UT...Winter Weather Advisory until noon MST today for UTZ028.

&&

SHORT TERM...LTB
LONG TERM...TGR
AVIATION...DB

Hazardous Weather Outlook
National Weather Service Grand Junction CO
232 AM MST Mon Dec 1 2025

COZ001>014-017>023-UTZ022>025-027>029-020945-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
232 AM MST Mon Dec 1 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Snow will taper off this morning on our mountains, with a few
flurries falling into midday up against the Continental Divide. Skies
clear across the region this afternoon with sunshine and high
temperatures 5-10 degrees cooler behind the cold front. Overnight
lows Tuesday morning will be some of the coldest of the season with
mountain basins in the single digits and our lower desert valleys
down in the low 20's.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Unsettled conditions are still expected to return Tuesday afternoon,
with additional measurable mountain snowfall expected through
Thursday morning. Another disturbance comes into view this weekend
with snow favoring our northern mountains. Temperatures remain on the
cool side of climatology through the period.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected today or tonight, however
spotters are encouraged to report snowfall amounts to the
National Weather Service in Grand Junction.

Preliminary Local Storm Report
National Weather Service Grand Junction CO
1018 PM MST Sun Nov 30 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     Snow             7 NE Sawpit             38.06N 107.91W
11/30/2025  E5.5 Inch        San Miguel         CO   Trained Spotter

0600 PM     Snow             Hayden                  40.49N 107.25W
11/30/2025  M3.0 Inch        Routt              CO   CO-OP Observer

            CO-OP Observer station HAYC2 Hayden.

0800 PM     Snow             Gunnison                38.54N 106.92W
11/30/2025  E6.0 Inch        Gunnison           CO   Public

&&