Published evidence / Open chart

Where reliable natural snow moves uphill.

Name: Chablais · Intermediate · RCP4.5: published climate evidence
Creator: PeakWave

Chablais · Intermediate · RCP4.5

Period1986–2005 reference; 2030–2050 and 2080–2100 projections

Baseline1986–2005 modelled HIST reference

100-day groomed-snow criterion in 7/10 winters; not a confidence interval · m

Your comparison altitude: 1,800 m (dashed marker)

Regional modelled reliability elevations are not universal snowlines, operating dates or resort closure predictions.

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The values behind the chart

100-day groomed-snow criterion in 7/10 winters; not a confidence interval. Units: m.
Series	Published value
1986–2005	1,580 m
2030–2050 · selected	1,860 m
2080–2100 · selected	2,060 m

Method and original sources

Spandre et al. (2019), Appendix A, Tables A1–A3. Groomed natural snow: at least 100 days with 100 kg/m², 15 December to 15 April, in seven winters out of ten. The selected comparison altitude of 1800 m is context, not a model output.

Spandre et al. · snow reliability · 2019 ↗

Appendix A, Tables A1 (HIST), A2 and A3, groomed snow, 70% columns. CC BY 4.0.

Evidence reviewed 2026-10-11. Source publication dates are shown separately. This chart republishes selected findings; it does not calculate a local climate forecast.

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