02/10/26 8pm: Alright, here you go, my preliminary total snowfall map for the approaching storm system, valid from 5am Wed to 5am Fri. Most of the snow for the mountains will be 5pm Wed to 12pm Thu with snow showers before and after this. Forecast remains on track but devil is in the details and there is still some disagreement between the models in spots.

Overall a warmer storm system at least initially through Wed night, then colder by Thu am. Could be some rain in the mountains valleys tomorrow with snow-levels above 9500ft through Wed evening, falling to 8k ft by Thu am.

Highest uncertainty in terms of snowfall amounts are for the ski areas in Summit, ClearCreek and Grand counties (areas further east), its going to be a battle between good lift from the left exit region of the jet-stream and southwest flow aloft (and some warmer air). Some models have the heavier band extending into northern Summit Co and towards Loveland ski area. Other models have all the heavy / significant snow west of Vail Pass. Right now thinking 4-9" generally for the Summit/ClearCreek/Grand ski areas, refer to map.

Heaviest snowfall overall will be west of Vail Pass (Vail, BC locally) with heaviest amounts likely in parts of the Park Range (near/north of Steamboat ski area), Flat Tops, Elk Range (between Aspen and CB, especially the west Elks) and Grand Mesa.... a good 7-15" for those areas.

Further south for the San Juans, generally 4-10" of new snow by Fri am, favoring the western San Juans near Silverton (higher uncertainty near Wolf Creek).

The Park Range (Rabbit Ears to Steamboat ski to Buff Pass, etc) is under a Winter Storm Warning from 6am Wed to 12pm Thu.

Most of the west-central mountains from near Vail, Beaver Creek, Aspen and Crested Butte are under a Winter Weather Advisory from 6am Wed to 12pm Thu. I would expect that much of the rest of the north-central mountains (Summit/Grand) will also have and advisory later (or maybe not).

For Den/Bou and the northern front-range looks like some rain showers primarily between 5am Thu to 2am Fri (best chances Thu afternoon / evening). Maybe Trace-1" for parts of the Palmer Divide to northern C. Springs. And maybe 1-4" for parts of the foothills (favoring areas in Boulder and Larimer counties)

Some light snow or snow showers likely continue on Thu afternoon into Fri morning, then a break. Then likely a few more snow showers on Fri night into Sat am as a low passes well south of CO.

Southern CO / San Juans will likely get some decent snowfall on Fri night into Sat mid-day, with an additional 3-6"+ in spots (western and eastern San Juan higher terrain).

Then looks sunny for northern CO on Sat-Mon now.

Next more significant storm system arrives by next Tue mid-morning (02/17) and that looks juicy. More on that later.

That is all for now. First image is my preliminary snowfall map through 5am Fri. Image 2 shows the current Winter Storm Warnings (pink) and Winter Weather Advisory (Purple) from NWS. Images 3 and 4 compare forecast total snowfall through 11am Fri from latest 00z HRRR and 18z CAIC WRF 2km model, take modeled snowfall amounts with grain of salt (but we are no in range of the high-res models, so we will lean on them going forward).