The Northern Rockies stay in a routine spring pattern through early week, then turn much more wintry with a 10-20 inches midweek reset from Wednesday into Friday. The weekend through Monday looks useful but not especially deep for skiers, with scattered showers, high snow levels, and periods of wind keeping the best fresh snow confined to the higher terrain. The better open-resort upside next week centers on Brundage, Big Sky, Grand Targhee, Tamarack, and Jackson Hole.
Saturday through Monday, guidance is aligned on an unsettled stretch but still split on exactly where the showery bands cash in, so confidence is better on the overall pattern than on resort-level snowfall. Snow levels generally hold around 6,000-8,500 feet while it is precipitating, so a lot of the weekend falls as rain or very wet snow low on the mountain and only modest accumulations build higher up. Expect mostly dense to fair snow where it sticks, with SLRs often in the 7-10 range and only occasional 10-12 pockets at the highest elevations. Exposed terrain will stay breezy, with gusts commonly in the 25-40 mph range and a few stronger bursts near showers.
Confidence is best from Wednesday morning through Friday afternoon, when the guidance converges on a broader storm, a steady drop in snow levels, and a colder finish. Snow should spread in during Wednesday, then turn more productive Wednesday night into Thursday as snow levels fall from roughly 5,500-6,500 feet to about 1,500-3,500 feet by late Thursday into Friday, lowest in northwest Montana and the Idaho Panhandle and a bit higher near the Tetons. Snow quality should improve as the storm matures, starting fairly dense Wednesday with SLRs near 10, then trending to moderate or even fairly light snow Thursday and Friday with SLRs more often in the 12-16 range. Winds look most disruptive ahead of and early in the front, with exposed gusts around 35-50 mph and locally higher around Schweitzer and other wind-prone ridgelines.
After Friday, the colder pattern likely hangs on into next weekend, but the guidance diverges quickly on where the next organized snowfall wave sets up. Some guidance reloads snow sooner across the northern half of the region, while other guidance delays the next meaningful shot until later next week, so that part of the outlook is still speculative. The cleaner signal is for cooler-than-normal temperatures to persist, which should help preserve whatever midweek refresh falls. Also note that Bridger Bowl, Whitefish Mountain, and Bogus Basin are already closed, so some of the late-week snow there is more of a seasonal footnote than an active chase target.
Resort Forecast Totals (Wed Apr 15 – Fri Apr 17)
- Brundage – 10-18 in
- Big Sky – 9-17 in
- Grand Targhee – 9-16 in
- Bridger Bowl – 7-13 in
- Tamarack – 7-13 in
- Jackson Hole – 7-13 in
- Bogus Basin – 6-11 in
- Schweitzer – 6-10 in
- Whitefish Mountain – 4-7 in
- Sun Valley – 2-4 in