National Weather Service Forecast Discussion

Thornton Weather Forecast   
Today's Forecast Story   
700
FXUS65 KBOU 060005
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
505 PM MST Thu Nov 5 2026

.KEY MESSAGES...

- Very light mountain snow possible on Friday in the high country with
  snow amounts less than 1".

- Pleasant temperatures and dry conditions are expected Saturday
  through late next week.

&&

.DISCUSSION /Through Thursday/...
Issued at 216 PM MST Thu Nov 5 2026

There is a ridge over Colorado with very light flow within it. The
subsidence has created a pleasant day with temperatures in the
upper 50s to low 60s across the plains with plenty of sunshine.

The current water vapor imagery shows an elongated trough
extending from northwest Montana to California. Models had
recently been showing this trough producing enough lift to
generate snow showers over the mountains tomorrow afternoon and
evening. However, the latest model runs split this trough with a
piece staying over North Dakota and another piece moving to
Arizona tomorrow. In the middle, over Colorado, there will be
minimal lift and limited moisture. The question is now, will there
be any snow showers at all? Compared to the question of, how much
snow will fall? The forecast was edited to show a 20-30% chance
of snow shows in the mountains tomorrow with other locations
remaining dry. Snow amounts will be less than 1" and most
locations won`t see any accumulation at all.

The Intermountain West will see a ridge develop over the region on
Saturday that will stick around in some form through next work
week. The ensemble data shows almost no chance for precipitation
in our CWA until the weekend of November 14-15. There will be very
pleasant temperatures with highs slowly warming from the low 60s
to close to 70 later in the week across the plains. With light
winds, no critical fire weather conditions are expected so there
will be no impactful weather.

&&

.AVIATION /00Z TAFS through 00Z Saturday/...
Issued at 451 PM MST Thu Nov 5 2026

VFR conditions are expected through this TAF package. Light east
winds will gradually turn southerly over the next few hours at APA
and DEN. Winds overnight at DEN will be from the south/southwest
around 9kts. BJC will remain light and variable for much of the
overnight period. A cyclone is forecast to form to the northeast
of DEN tomorrow morning, turning winds more N/NW for the late
morning and afternoon. Winds will remain on the lighter side
tomorrow, with speeds generally below 8kts.

&&

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

&&

$$

DISCUSSION...Danielson
AVIATION...AP

NWS BOU Office Area Forecast Discussion