11/26/25 1:30pm: One thing that is becoming a bit more clear is that the north-central mountains will get a good amount of snow (> 10" in spots) from the two storm systems combined: The Fri/Sat storm and the Sun/Mon storm system (two distinct waves, back to back).

Not as clear for the front-range Den/Bou, but likely some light snow early Sat am and more light snow Sun afternoon into Mon am and turning much much colder.

I'm basing my forecast off a combination of the latest (12z: 5am initialized) ECMWF and GFS models. ECMWF shows a stronger first wave (Fri into Sat) but a weaker second wave (Sun into Mon). GFS on the other hand has a weaker first wave and stronger second wave, so devil in the details.

General timing

• First storm system expected from 8pm Fri to 11am Sat, biggest impacts early Sat morning

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• Second storm system from: 11am Sun to 5am Mon, biggest impacts on Sun night

Here are some general snow totals I'm seeing from both waves combined:

• North-central mountains including Steamboat, Aspen, Vail, Copper, Breck, A-Basin, Loveland, Winter Park, IPW, RMNP, Cameron Pass, etc: 8-16" of new snow by Mon am (heaviest snow in areas favored by northwest flow)

• Mountain towns / valleys: 2-8"

• South-central / southwest mountains (Crested Butte, Grand Mesa, Monarch, Telluride, Silverton, Purgatory, Wolf Creek, Sangres, etc): 6-12"

• Northern front-range including Denver, Boulder, Ft. Collins, Castle Rock: 1-4" total (some Sat am, some Sun night)

• Northern Foothills including Estes Park, Allenspark, Nederland, Evergreen, Conifer, etc: 3-7"

• Southern front-range including Colorado Springs, Pueblo, Trinidad ect): 1/2" to 3"

• Southern foothills (Woodland Park, areas near Pikes Peak, areas west of Canon City, Wet Mountains, etc): 1-4"

Details will change some so stay tuned. Fingers crossed for good snowfall.

First image shows forecast precip-type/rate and thickness from Fri morning through Tue morning. Image 2 and 3 compare forecast total snowfall from now through 11am Mon from very latest ECMWF and GFS, take modeled snow amounts with a grain of salt.

I'll be working on an initial snowfall map for the Fri/Sat storm tomorrow.