Mammoth & Eastern Sierra
Data-driven analysis of 1 resort — NWS forecast accuracy, storm rankings, and local knowledge, powered by SNOTEL ground truth.
The Headlines
Mammoth Mountain averaged 6.7"/storm-day — the region's top producer with 400" on the season.
The region's biggest drop: 40" at Mammoth Mountain on Jan 15, 2026.
Resort Rankings
Sorted by season snowfall total.
| # | Resort | Season Total | Avg/Storm-Day | Best Storm | NWS Bias |
|---|---|---|---|---|---|
| 1 | Mammoth MountainCA | 400" | 6.7"/day | 40" | Pending |
NWS Forecast Direction
Where NWS consistently runs high or low vs. SNOTEL ground truth, confirmed across every verification method we've tested. Everything else shows as pending until StormDrop's verification pipeline rebuild is complete — we don't publish a number we can't stand behind.
Storm Timeline
Monthly snowfall across the region — feast months vs. famine months.
What Locals Are Saying
Top community intel from TGR forum data. The best powder intel isn't in the forecast.
“Chapter 5: Post-storm best bet, untracked lines available late day”
Don't Get Skunked Next Season
This season proved the forecast alone is not enough. StormDrop shows the raw NWS number, predicts the canyon and road closures, and tells you where to go when your home mountain isn't delivering.