Score trend pulse
Among open resorts with a latest SnowSure trend signal (31 mountains). GPT-4o labels each score as improving, stable, or declining.
Improving
25.8%
8 resorts
Stable
61.3%
19 resorts
Declining
12.9%
4 resorts
Powder days this season
Tracked powder events, SnowSure-only. Northern Hemisphere 2026–27 · Southern Hemisphere 2026.
| 1 | Caviahue | 61 days |
| 2 | Las Leñas | 59 days |
| 3 | Nevados de Chillán | 55 days |
| 4 | Chapelco | 50 days |
| 5 | Corralco | 50 days |
| 6 | El Colorado | 50 days |
| 7 | Valle Nevado | 49 days |
| 8 | Antuco | 48 days |
| 9 | Cerro Catedral | 45 days |
| 10 | Portillo | 43 days |
| 11 | Antillanca | 43 days |
Bluebird days this season
Clear-sky powder mornings, verified or predicted. Northern Hemisphere 2026–27 · Southern Hemisphere 2026.
| 1 | El Colorado | 9 days |
| 2 | Valle Nevado | 8 days |
| 3 | Lagunillas | 8 days |
| 4 | Las Leñas | 7 days |
| 5 | La Parva | 7 days |
| 6 | Mt Dobson | 6 days |
| 7 | Roundhill | 6 days |
| 8 | Mt Hutt | 5 days |
| 9 | Nevados de Chillán | 5 days |
| 10 | Ōhau | 4 days |
| 11 | Portillo | 4 days |
Where models disagree
14-day snowfall spread across ECMWF, GFS, GEM, JMA, ICON, Météo-France, and Met Norway — minimum 5 cm spread to qualify.
| # | Resort | Spread | Avg forecast |
|---|---|---|---|
| 1 | Alyeska ResortUnited States | 237 cm | 145 cm |
| 2 | PortilloChile | 167 cm | 131 cm |
| 3 | LagunillasChile | 145 cm | 96 cm |
| 4 | FolgefonnNorway | 121 cm | 98 cm |
| 5 | PenitentesArgentina | 116 cm | 78 cm |
| 6 | El ColoradoChile | 100 cm | 127 cm |
| 7 | La ParvaChile | 95 cm | 128 cm |
| 8 | StrynNorway | 76 cm | 57 cm |
| 9 | Valle NevadoChile | 69 cm | 135 cm |
| 10 | Nevados de ChillánChile | 66 cm | 49 cm |
| 11 | Las LeñasArgentina | 61 cm | 48 cm |
| 12 | Kitzsteinhorn - KaprunAustria | 60 cm | 34 cm |
Days 8–14 outlook
Average of 7 models — the plain average of the seven weather models for the second week of the 14-day window. Ranked by forecast cm over days 8–14 (27 open resorts).
| # | Resort | Days 8–14 |
|---|---|---|
| 1 | Valle Nevado | 42 cm |
| 2 | La Parva | 41 cm |
| 3 | Portillo | 36 cm |
| 4 | Lagunillas | 27 cm |
| 5 | Whakapapa | 22 cm |
| 6 | Penitentes | 18 cm |
| 7 | Stubai Glacier | 18 cm |
| 8 | Galdhopiggen | 17 cm |
| 9 | Gletscherwelt Zillertal 3000 | 16 cm |
| 10 | Pitztal Glacier | 16 cm |
| 11 | Hintertux Glacier Ski Resort | 16 cm |
| 12 | Sölden | 16 cm |
Upcoming bluebird predictions
Predicted clear-sky powder mornings 1–3 days ahead. Track record: 0/243 verified correct (0%).
| Resort | Predicted day | Confidence | Fresh snow |
|---|---|---|---|
| Valle Nevado | Thu, Oct 15 | medium | 7 cm |
Best model by region
Weekly MAE-based skill scores from verified forecasts. See Forecast Trust for the full verification corpus.
| Region | Top model | Skill score |
|---|---|---|
| Alps | Météo-France | 71.8 |
| andes | JMA | 52.1 |
| cascades | ICON | 78.6 |
| Rockies | ECMWF | 82 |
| sierra | ECMWF | 72.2 |
| southern-alps | GFS | 36.6 |
Use this data in your app
Every dataset on this page is available via public REST endpoints and the SnowSure MCP server. Start with the trends catalog, or pull per-resort season stats and score component history.
GET /api/v1/trends · GET /api/v1/leaderboards/extended-outlook · GET /api/v1/forecasts/disagreement
