Croix de Chamrousse
📍 Rhone-Alpes , Departement de l'Isere · Nearest city: Livet-et-Gavet (3 km)
56 XC score / 100 · takeoff at 2219 m · 📍 View on map
Coordinates and external links
45.12720, 5.90217Forecast next days
Updated: 2026-04-19 16:12 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día muy favorable para XC, base de cúmulos ~641 m, viento 10 km/h.
base ~641m · wind 10 km/hDía volable, condiciones decentes, base de cúmulos ~791 m, viento 11 km/h.
base ~791m · wind 11 km/hCondiciones marginales, base de cúmulos ~1372 m, viento 10 km/h.
base ~1372m · wind 10 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-20❌ Not recommended · peak 63 at 16h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (100/100) — base bajo freezing con CU
⏰ Useful window: 14:00 – 15:00
| 08 35 ☁️⚠️ | 09 40 ☁️⚠️ | 10 50 ☁️⚠️ | 11 50 ☁️⚠️ | 12 45 ☁️⚠️ | 13 45 ☁️⚠️ | 14 45 ☁️⚠️ | 15 45 ☁️⚠️ | 16 63 ☁️⚠️ | 17 48 ☁️⚠️ | 18 45 ☁️⚠️ | 19 53 ☁️⚠️ | 20 50 ☁️⚠️ |
Peak 16h: CAPE 20 J/kg · LI -0.4 · BL top 1370 m · w* 0.0 m/s · cloud base 2906 m · 0°C at 2810 m · Pro score 54/100 · sun 24° over slope
2026-04-21❌ Not recommended · peak 60 at 16h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (82/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 30 ☁️⚠️ | 10 30 ☁️⚠️ | 11 55 ☁️⚠️ | 12 55 ☁️⚠️ | 13 30 ☁️⚠️ | 14 35 ☁️⚠️ | 15 35 ☁️⚠️ | 16 60 ☁️⚠️ | 17 55 ☁️⚠️ | 18 50 ☁️⚠️ | 19 55 ☁️⚠️ | 20 55 ☁️⚠️ |
Peak 16h: CAPE 10 J/kg · LI 3.6 · BL top 1180 m · w* 0.0 m/s · cloud base 2944 m · 0°C at 2810 m · Pro score 52/100 · sun 25° over slope
Hourly flyability (0–100). ⛈️ = storm risk · ☁️⚠️ = cloud suck · 🏔️ = active ridge lift. CAPE = convective energy, LI = stability, BL top = thermal ceiling, w* = estimated dry thermal velocity. Source: Open-Meteo (ECMWF/GFS/ICON blend model).
Estimated vertical profile (Sounding)
Reference time: 16:00 (peak of the day)
Surface T: 6.9°C · Td: 1.4°C
LCL (cloud base): 687 m
BL top: 1370 m
0°C level: 2810 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 10 | High |
| Avg thermal probability | 0.84 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.17 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Nearby sites
Chamrousse - l'Aiguille / la Croix (63) · Col de Freydane (54) · Le Grand Replomb (67) · Le Murier 4 Seigneurs (31) · Lac de Crop (54) · Alpes d'huez (50)