AI-powered 15-day snow forecasts for 120 ski resorts. The only forecast you can verify — every prediction is scored daily against NOAA SNOTEL observations and our accuracy is published publicly.
Resorts forecast to get 3 inches or more on a day in the next 7 days
Most snow forecasts are a single NWP model in a pretty wrapper. We built a real ensemble.
Select a resort for detailed 15-day probabilistic snow predictions
Purpose-built for skiers who want accurate, actionable snow forecasts
Every forecast is built from NOAA's GEFS ensemble: 31 runs of the same model, each started from slightly different conditions. When the members disagree, the range we show widens. That spread is the model's own; whether reported snowfall stays under the top of the range as often as it should is something we measure, not assume.
Each day shows the snow we expect and an “up to” amount (the 80th percentile). We score how often resorts' own reported snowfall stays under it and publish the result in our methodology.
Every prediction is scored daily against NOAA SNOTEL and GHCN observations. Unlike other services, we publish our track record publicly at /scorecard — no cherry-picking, no manual adjustments.
Get an email when a resort you follow is forecast to reach the snowfall you choose, with the range we forecast for that day: expected, and up to the 80th percentile.
Forecasts refresh after each GEFS model cycle (00Z, 06Z, 12Z, 18Z). You always see the latest data, with forecasts extending 15 days from the most recent run.
From global weather model to your mountain's snow forecast
We pull the latest 31-member GEFS ensemble from NOAA at 0.25° resolution, extracting precipitation, temperature, and wind for each resort's grid point.
Mountains squeeze extra moisture from clouds. We apply per-resort, wind-direction-dependent orographic multipliers with dynamic damping for heavy precipitation events.
Liquid precipitation is converted to snow depth using Kuchera snow-to-liquid ratios that account for temperature. Lapse rate corrections adjust for the difference between GEFS grid elevation and actual summit/base elevations.
The 31 ensemble members give us a probability distribution. We report the 50th percentile (expected) and the 80th percentile (a realistic upper estimate) for each 6-hour period, then aggregate to daily totals.
Snow forecasts for ski resorts across the western United States and beyond
Everything you need to know about PowCall's snow forecasts
Check the latest 15-day snow forecasts for all 50+ ski resorts.
❄ View Snow Dashboard