Sleeper Day!

Posted Tuesday, December 22nd, 2020 by CJ Sawyer

TD;LR: Pow day in the Cottonwoods today with skies clearing out quickly. High pressure builds in as we end the week with dry conditions through the weekend.

Nowcast: NW flow overnight dumped snow in Little Cottonwood canyon with Alta reporting 9 inches of very low density snow overnight. Elsewhere, solitude is reporting 4 inches overnight and park city is reporting 4 inches overall.

Sugarloaf peak webcam this morning courtesy of Alta

Short Term: We are looking at a building ridge of high pressure over the Great Basin as we head toward Christmas. What this means for Northern Utah is dry days ahead and building inversions unfortunately. Expect haze to increase by Thursday with the ridge axis over the northern Rockies. The next chance for snow in the Wasatch will likely be Saturday.

ECMWF Courtesy of

Long term: The good news is the trough offshore the west coast seen in the above image will likely move onshore as we head into the weekend and next week. Right now, none of the shortwaves associated with this longwave troughs look particularly strong (no big storms), but with the right flow setup could be good for certain areas.

CJ Sawyer

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