An initial look at the Sat/Sun storm system: biggest impacts over southwest CO again

11/10/26 8:30am: Alright, its time to take a look at our next storm system slated to impact the state from Saturday morning through Sunday evening (biggest impacts expected Sat night into Sun).

Main impacts expected from 8am Sat through 5pm Sun (rain snow moves into the San Juan by 5am Sat).

Models show a broad trough moving into CO by Sat am (with strong southwest flow initially), then turning into an upper-level low over southeast CO by Sun pm.

Overall storm track will favor southern CO / San Juans for heaviest rain/snow again (whats new). Parts of the San Juans could get 6-12" of snow by Sun afternoon.

But even the north-central mountains should get a nice round of rain/snow on Sat night into Sun with falling snow levels. The local ski areas could get 1-5" of new snow by Sun afternoon.

Snow-level likely go from near 10k ft on Sat am to 8k ft by Sun am.

Unclear if Den/Bou gets much precip (not a great setup for the front-range with quite a bit of westerly downslope flow, at least initially). But likely a chance for some rain showers from late Sat night into Sun and maybe during the day Sun.

Right now looks like best chances on Sun will be over the southern front-range from the Palmer Divide south to Springs and Pueblo (some rain in those areas on Sun).

Also the foothills could have some rain/snow Sat night into Sun (snow-levels may drop to 7k ft by Sun am)

The storm clears out of the state by Sun night.

First image shows the next storm system via 500mb vorticity / wind valid 3pm Sat from latest ECMWF. Second image shows forecast precip-type / rate at 3pm Sat from ECMWF. Images 3 and 4 compare forecast total liquid precip and snowfall from now through 6pm Sun from latest ECMWF (regional views, take with a grain of salt, details will change).