TL;DR: A low-pressure trough will pass through the region today bringing snowfall to Wasatch resorts. This trough will evolve through this week to become a retrograding cutoff low in the SW states. A bulky high-pressure ridge will move over northern Utah this weekend looking to stay in place for the beginning of next week.
Nowcast: Snowfall has already begun in the Wasatch! It is currently 28 F at the base of Alta and 20 F at the top of Collins. Wind is light from the WNW.
Short-Term: Wasatch resorts will begin seeing snowfall beginning this morning. The heaviest snow accumulation will occur through Tuesday night (~8 pm). Instability will persist throughout the region after this; however, snowfall rates will calm down. Snowfall totals at ski resorts range from 8-15” through Wednesday. Cold air advection will occur beginning Tuesday afternoon and temperatures will reach a minimum for this system by Wednesday night.
(Univ Utah: https://weather.utah.edu/. Time Height plot showing moisture headed our way. Snowline (Blue Line) also drops to the valley floor with this system.)
Long-Term: A bulky high-pressure ridge will push into northern Utah this weekend bringing fair weather. This pattern looks to persist well into next week. Expect temperatures to steadily rise throughout this period and a consistent diurnal cycle.
(Univ Utah: https://weather.utah.edu/. Shows the “bulky” high-pressure ridge moving into the region this weekend.)
Backcountry comments: With fair weather on its way next week don’t forget to check UAC before heading into the backcountry.
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