The West is in active pattern this week with the high pressure ridge slowly retreating. Moisture off the Pacific is still being forced north into the Cascades and British Columbia. This eventually will swing into the northern Rockies over the next 7 days. Light to moderate snow is likely this weekend in the Tetons with perhaps higher amounts expected mid week. We might dry out somewhat as we approach Xmas Eve before a more active period starts in early January.
Below: Low pressure over the northern Rockies Wednesday night/Thursday
This weekend will feature a moderate dose of snowfall for the Tetons. Much colder temperatures will bring light snowfall to the Valleys. Light snow will begin tonight over the Tetons and enhance by Saturday morning. Moderate snow will be falling during the day with perhaps 5-7 inches at upper elevations by last chair Saturday. Peak snowfall rates will occur between 5AM and Noon Saturday. “While moisture totals are not significant (1/2 inch of liquid) colder temperatures may provide higher amounts with better snow ratios” Lets hope we creep closer to the 6-10 inch mark by midnight Saturday. Its definitely a wildcard and would only happen at higher elevations” Snow showers will be likely Saturday night with perhaps a few more inches into Sunday morning. Total snowfall this weekend will range from 4-8 inches with isolated higher amounts at the summits on West or NW facing slopes.
Light snow is likely Monday with some clearing by Tuesday afternoon. Snow will increase on Wednesday morning with the approach of a cold front and decent moisture from the Pacific Northwest. This storm is likely to bring moderate snow back to the Tetons through Thursday morning. Its a bit far out to speculate amounts. Early indications with cold air and west or NW winds are a good chance of 5-10 inches from this event. Peak snowfall may happen Wednesday late morning through midnight. The Good: Several periods of light to moderate snow in the next 7 days that should add up nicely by Thursday afternoon. The Bad: No single overnight deep dump
Below: 7 day total snowfall in the Tetons- Highlights will happen this weekend and mid next week. Its likely that we are looking at 12-20 inch totals through the period.
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Forecaster: Powderchaser Steve