080 
FXUS65 KBOU 041729
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
1129 AM MDT Sun Oct 4 2026

.KEY MESSAGES...

- Dry and unseasonably warm weather for the week ahead. 
  Record/near record warmth on Monday.

- A few showers possible Tuesday as a weak disturbance moves
  across. 

&&

.DISCUSSION /Through Saturday/...
Issued at 1049 PM MDT Sat Oct 3 2026

An upper level high will be centered over the Great Basin on Sun and 
then will weaken some on Mon.  Cross-sections show just enough mid 
level moisture with favorable lapse rates to allow for isold high 
based showers mainly over Park county Sun aftn.  Otherwise it will 
be dry with above normal temperatures.

On Mon, once again there is some mid level moisture embedded in weak 
NW flow aloft.  As a result, can't rule out isold high based showers 
over the high terrain.  Meanwhile, with rising 850-700 mb temps 
along with downslope low level flow, highs will be near record highs 
across portions of the plains as readings reach the mid 80's to 
around 90.

On Tue, a weak disturbance may affect the area with some increase in 
mid level moisture.  Thus may see a slightly better chc of high 
based showers/isold tstms over the higher in the aftn.  Over nern 
CO, it will remain dry with highs remaining 10 to 15 degrees above 
normal.

By Wed, the flow aloft will remain weak WNW. The ECMWF still shows 
some lingering mid level moisture over the higher terrain while the 
GFS doesn't.  Overall, any high based shower activity should be 
rather isold.  Once again highs will be 10 to 15 degrees above 
normal.

For Thu and Fri, the flow aloft will become more zonal by Fri with 
mainly dry conditions expected.  Highs both days will continue 10 to 
15 degrees above normal over much of the area.

By next Sat, the flow aloft will increase from the WSW as an upper 
level trough develops over the Pacific NW.  Meanwhile, there are 
significant disagreements between the ECMWF and GFS as to where this 
system will be by late Sun.  The ECMWF intensifies the upper level 
trough and keeps it near the West Coast while the GFS moves it 
quickly into the nrn Rockies and Great Basin.  At this point, really 
hard to say which solution will pan out.  However, it looks warm and 
dry on Sat with highs from 10 to 15 degrees above normal.  For Sun, 
there could be a chc of precip in the mtns late in the day based on 
the faster GFS solution.  Meanwhile, will likely see another day of 
above normal temperatures as well.

&&

.AVIATION /18Z TAFS through 18Z Monday/...
Issued at 1128 AM MDT Sun Oct 4 2026

VFR conditions expected through the TAF period. Light and variable 
winds expected for the next couple of hours, though with a westerly 
component favored. By 20Z, winds should turn northeasterly and stay 
there for a few hours before turning back to the south. KDEN and 
KAPA may see some more gusty southerly winds (~15-20 kts) between 
00Z and 05Z, after which winds should settle into drainage for the 
overnight hours. Another period of light and variable winds is 
expected in the morning, around 16-20Z, with winds settling into a 
northeast pattern again after that. Skies should remain clear 
through the TAF period.

&&

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

&&

$$

DISCUSSION...RPK
AVIATION...AGS