Weather
The Northern Rockies trend from windy and mostly dry conditions into a more productive midweek snow cycle, with the best in-window snowfall focused on the Tetons and southwest Montana. Friday and Saturday stay mild with strong west winds, then a weak wave brings limited Sunday and Monday snowfall at higher elevations before a brief Tuesday lull. A colder front arrives Wednesday and Thursday, snow levels fall from around 6,500-8,000 feet to near 3,500-5,000 feet by Thursday night, and conditions turn more winter-like for many upper-mountain zones. Confidence is highest from Sunday morning through Friday afternoon, then drops for next weekend as storm timing and intensity spread increases.
From Friday through Tuesday, guidance is converging well on wind and temperature trends, but only weak snowfall production. Friday is the windiest day, with frequent gusts in the 25-40 mph range and stronger exposed ridgeline gusts, then winds ease Saturday. Sunday into Monday, guidance is aligned on timing and high snow levels near 6,500-8,000 feet, but diverges on intensity, especially in the Tetons, where accumulations are more likely than elsewhere. Most areas should stay around 0″-2″, while the Tetons are better positioned for 3″-8″. Snow quality in this first wave looks dense, with SLRs mostly around 8-10. Tuesday trends drier and warmer again, with above-normal temperatures and generally spring-like surface conditions outside shaded high terrain.
Wednesday through Friday is the main storm period, and guidance is converging on timing while still diverging on peak intensity by subregion. Snow should expand Wednesday afternoon and evening, continue through Thursday, then taper Friday, with the best overlap of snowfall and lower snow levels late Wednesday night into Thursday night. Wind impacts look moderate rather than extreme during this phase, with many mountain locations gusting around 25-35 mph. Snow quality also improves as colder air settles in: early storm snow is generally moderate to dense with SLRs near 10-12, then trends toward fair to lighter snow with SLRs near 12-15 later in the event. Most favored mountains in this window land in a 6″-12″ bracket, while Grand Targhee is positioned for roughly 12″-23″.
After Friday, confidence drops quickly for Saturday through Monday even though another storm signal remains on the table. Guidance splits between a colder, wetter camp and a milder, lower-output camp, so snowfall timing, snow levels, and wind magnitude are all less certain than the midweek period. The most realistic current range is another 3″-12″ for many higher-elevation areas, with an upside scenario near 12″-24″ in favored terrain if wetter solutions verify. The larger-scale early March pattern still supports continued opportunities for mountain snowfall across Idaho, Montana, and Wyoming, but day-to-day ski quality will depend heavily on which storm track wins out.
Resort Forecast Totals (Sun Mar 01 – Fri Mar 06)
- Grand Targhee – 12″-23″
- Big Sky – 6″-12″
- Jackson Hole – 7″-12″
- Schweitzer – 6″-11″
- Brundage – 5″-10″
- Bogus Basin – 3″-7″
- Bridger Bowl – 3″-6″
- Tamarack – 3″-6″
- Whitefish Mountain – 3″-5″
- Sun Valley – 1″-2″
