hourly
Best SnowSure by Region
Top 5 SnowSure scores per macro-region among open resorts.
Snow intelligence
Rankings, season context, and archive insight.
Pre-computed cards from SnowSure — not generic weather widgets. SnowSure Score, 7-model blend, verified accuracy, season norms, powder-day counts, and ground-truth where available.
2025-26 · 2 open resorts · 10 cards with sufficient data · Updated Jun 4, 2026, 8:26 AM UTC · Snow intelligence by SnowSure
Phase 1
Right now
Live rankings and season snapshot cards refreshed hourly or daily.
hourly
Best SnowSure Right Now
Top 2 open resorts by SnowSure score.
25
- 2
daily
Biggest Single-Day Storm — 2025-26
Grandvalira — 38.9 cm on 2026-04-02
38.9cm
Grandvalira
hourly
Highest 14-Day Snow Forecast
daily
Most Powder Days — 2025-26
Resorts with the most powder days (≥6 cm / 24h) this season.
34
- 2Limone Piemonte34 days
- 3Isola 200032 days
- 4Sierra Nevada30 days
- 5Auron29 days
Phase 2
This season
Forecast intelligence, model accuracy, and season-long performance.
weekly
Best Forecast Model by Region
Top-weighted model per region from verified forecast error (MAE).
- Japan100.0%
METEOFRANCE
- Alps100.0%
ICON
- East Coast100.0%
ICON
- Southern Alps99.9%
GEM
- Andes99.8%
GFS
- Scandinavia99.6%
GEM
- Rockies99.5%
METEOFRANCE
- Cascades98.6%
ECMWF
hourly
SnowSure Trend Pulse
0% of open resorts improving.
0%
of open resorts improving
- Improving
- 0
- Stable
- 2
- Declining
- 0
2 open resorts in sample
Phase 3
Deep dive
Archive comparisons, ground truth, and historical context.
weekly
Earliest Opens — 2025-26
First resorts to open this northern-hemisphere season.
- Winterpark Resort2025-10-31
Verify on SnowSure → season dates vs reported open.
- Copper Mountain2025-11-07
Verify on SnowSure → season dates vs reported open.
- Killington Resort2025-11-12
Verify on SnowSure → season dates vs reported open.
- Mammoth Mountain2025-11-20
Verify on SnowSure → season dates vs reported open.
- Val Thorens2025-11-22
Verify on SnowSure → season dates vs reported open.
weekly
Longest Completed Seasons — 2025-26
Mammoth Mountain — 194 days open.
- Mammoth Mountain194
days open
- Killington Resort194
days open
- Winterpark Resort164
days open
- Val Thorens 163
days open
- Tignes 163
days open
weekly
SnowSure ML Forecast Accuracy
Latest gated validation vs simple-mean baseline by forecast horizon bucket.
+1.6%
Day 1 3
+12.8%
Day 4 7
+36.2%
Day 8 14
Southern Hemisphere and global snapshots are available via the same API with hemisphere=sh or scope=global.