10/20/26 9am: Morning. Lets look at the snowy-aspect of the approaching storm system(s).

As I mentioned, initially for the Wed/Thu storm system it will be much warmer with high snow-levels, favoring the San Juans.

Models show a second wave / upper-level low that will have some colder air and more widespread rain/snow for north-central CO on Sat into Sun (but details for that wave are all over the place).

And depending on the track of the second wave on Sat into Sun: Den/Bou and parts of the front-range will likely get some rain showers as well, with best chances between 12pm Sat through 6pm Sun (best chances on Sat night).

I made some graphics that show the situation. I also includes the Wet Bulb Freezing level (the elevation that could support snow falling based on evaporative cooling). You can see that even at 12am Thu (Wed night into Thu am) the web-bulb freezing level over southern CO is > 12,500ft.

But with 1-4" of liquid precip in the forecast for southern CO, it does look live the very highest elevations of the San Juans, especially upper parts of Weminuche Wilderness over to Uncompahgre Peak / above Lake City, could be favored for 1-2ft of snow in spots (mostly above 12k ft) by Fri/Sat.

Also look like parts of the north-central mountains, near the Cont. Divide from near Hoosier Pass to A-Basin to Loveland Pass to Berthoud Pass to IPW areas will also get some snow on Sat night into Sun, maybe 2-5" in a few spots. Snow-level may drop to 9500ft by Sun am.

Anyway, main timing windows:

Heavy rain (snow above 12,500 ft) for southern CO, favoring the San Juans to the Elks to Sangres, and southern Sawatch from 12pm Wed to 6am Fri initially. With more rain snow from Sat morning to Sun am (snow level drops to 10k ft by Fri into Sat).

There could be some big time rain amounts in spots, several models have 2-4" of rain near Durango. Flooding will be a concern Wed night through Thu night.

North-central mountain will have some rain showers (snow up high) on Thu into Fri. But then a better chance for some snow over the mountains passes from 12pm Sat to 12pm Sun.

Den/Bou and the front-range will have a chance for rain mostly from 12pm Sat through 6pm Sun, best chances Sat night. Best coverage likely from Denver south, especially PD south to Springs and Pueblo.

So it look fairly unsettled everywhere (mountains and front-range) this weekend for Sat and Sun, so heads up there with more cloud-cover, cooler and rain/snow in spots.

That is all for now.

First image shows forecast total snowfall from now through 12am Mon from very latest (06z) ECMWF model. Second image is equivalent for total liquid precip (take modeled rain/snow amounts with grain of salt). Third image shows the Wet-Bulb freezing level at 12am Thu from latest CAIC WRF 2km model. Fourth image shows the second storm system at 6pm Sat from latest GFS...its will all depend on where this low tracks.