445
FXUS65 KBOU 242226
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
326 PM MST Mon Nov 24 2025

.KEY MESSAGES...

- Becoming windy tonight into Tuesday and turning colder.

- Very light snow possible in the mountains tonight and on
  Wednesday.

- First taste of winter weather next weekend, with a chance of
  snow for the mountains and plains.

&&

.DISCUSSION /Through Monday/...
Issued at 244 PM MST Mon Nov 24 2025

Water vapor imagery shows a shortwave trough over Montana headed
east-southeastward. This trough will pass well to the north of
Colorado late tonight. A cold front associated with the trough
will move across the plains early tomorrow morning. This will
bring in cooler temperatures tomorrow with highs roughly 5 degrees
below normal. This will also bring in gusty winds. The far
northeast plains may see gusts up to 45 mph tomorrow afternoon.
With such strong winds aloft, the higher mountains will see
gusts up to 65 mph tonight and tomorrow morning. In addition, a
few light snow showers could occur at high elevations tonight with
minimal accumulation.

Northwesterly flow aloft will be overhead on Wednesday with
subsident flow. Dry conditions are expected with near normal
highs. Ridging aloft will move overhead on Thursday and into
Friday morning. Mild and dry conditions are expected both days
with mostly clear skies.

Late Friday through the upcoming weekend will be one to watch for
the welcoming of winter to our area. Models disagree greatly on
the strength, location, and timing of a longwave trough over
Colorado, but they at least all have a longwave trough. Ensemble
data shows that highs across the plains have a good chance of
staying below freezing with lows in the teens. Ensemble data also
shows a moderate snowfall in the mountains is likely with a light
snowfall likely across the plains. There could be two waves of
precipitation depending on how the shortwave troughs play out
within the longwave trough. It`s reasonable to expect that travel
will be impacted especially in the mountains this upcoming
weekend. Right now the forecast mentions a chance for snow across
our entire CWA and there are not many other details to be
confident about right now.

&&

.AVIATION /18Z TAFS through 18Z Tuesday/...
Issued at 1034 AM MST Mon Nov 24 2025

VFR conditions throughout the TAF period. Light northeast winds
are expected throughout the afternoon at DEN and APA. Winds will
become light and variable or southeast around sunset (00Z). As a
trough arrives from the northwest, gustier westerly flow aloft may
mix down this evening. Gusts up to 18 knots are possible at all
terminals from 02-06Z. A cold front will move through the
terminals between 10-13Z Tuesday. This front will initially bring
gusty northeast winds behind it with gusts up to 20 knots. Winds
will slightly decrease during the early morning hours but will
increase again around 16z. A Longmont anticyclone will develop
tomorrow which will keep winds at DEN and APA out of the NE and
light and variable winds at BJC. Gusts during the day should stay
less than 25 knots.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION...Danielson
AVIATION...Danielson