Saint Pierre de Chartreuse - La Scia
📍 Rhone-Alpes , Departement de l'Isere · Nearest city: Saint-Hilaire (6 km)
70 XC score / 100 · takeoff at 1662 m · 📍 View on map
Coordinates and external links
45.34530, 5.84600Forecast next days
Updated: 2026-04-20 13:16 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día muy favorable para XC, base de cúmulos ~1255 m, viento 8 km/h.
base ~1255m · wind 8 km/hDía volable, condiciones decentes, base de cúmulos ~997 m, viento 11 km/h.
base ~997m · wind 11 km/hDía volable, condiciones decentes, base de cúmulos ~1254 m, viento 6 km/h.
base ~1254m · wind 6 km/hDía muy favorable para XC, base de cúmulos ~1465 m, viento 11 km/h.
base ~1465m · wind 11 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 60 at 13h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (100/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 50 ☁️⚠️ | 10 55 ☁️⚠️ | 11 50 ☁️⚠️ | 12 50 ☁️⚠️ | 13 60 ☁️⚠️ | 14 40 ☁️⚠️ | 15 45 ☁️⚠️ | 16 40 ☁️⚠️ | 17 50 | 18 55 | 19 50 | 20 50 |
Peak 13h: CAPE 10 J/kg · LI 1.0 · BL top 1105 m · w* 0.0 m/s · cloud base 2849 m · 0°C at 2690 m · Pro score 78/100 · sun 40° over slope
2026-04-21❌ Not recommended · peak 55 at 15h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (67/100) — base bajo freezing con CU
| 08 30 | 09 30 | 10 30 | 11 35 | 12 30 ☁️⚠️ | 13 30 ☁️⚠️ | 14 20 ☁️⚠️ | 15 55 ☁️⚠️ | 16 45 ☁️⚠️ | 17 45 ☁️⚠️ | 18 45 ☁️⚠️ | 19 50 ☁️⚠️ | 20 35 |
Peak 15h: CAPE 10 J/kg · LI 3.9 · BL top 1195 m · w* 0.0 m/s · cloud base 2574 m · 0°C at 2760 m · Pro score 62/100 · sun 31° 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: 13:00 (peak of the day)
Surface T: 11.3°C · Td: 1.8°C
LCL (cloud base): 1187 m
BL top: 1105 m
0°C level: 2690 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
Wind chart — altitude × time
Color: green < 20 km/h · yellow 20-30 · red >40. Arrows point to where the wind is blowing. Each column = 1 hour. 4 altitudes: 10m surface, 80m first thermal, 1500m (850 hPa) thermal cruise, 3000m (700 hPa) top.
Wind next days (Open-Meteo model)
Wind rose 10m — 2026-04-20
| Date | Morning 08-12h | Midday 12-16h | Evening 16-20h | |||
|---|---|---|---|---|---|---|
| 2026-04-20 | 3 km/h NW | gust 19 | 7 km/h W | gust 23 | 7 km/h NW | gust 26 |
| 2026-04-21 | 6 km/h NE | gust 21 | 6 km/h N | gust 21 | 7 km/h N | gust 22 |
Colors: green < 15 km/h (optimal) · orange 15-25 · red >25 (flying not recommended). ⚠️ = shear >25 km/h between 10m and 850 hPa (potentially broken thermals).
Takeoff orientations
Green = good orientation · Yellow = possible · Gray = not suitable
Why this site has thermal potential
| Factor | Value | Interpretation |
|---|---|---|
| Hotspot density (5 km) | 12 | High |
| Avg thermal probability | 0.81 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.72 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
Two available : West & South West take off should be avoided when ski resort is open. Accessible by road then path, or cable car during winter and july-august. No difficulty, large take off.
Nearby sites
Pravouta (72) · La Dent de Crolles (64) · Grand Som (50) · Col de Baure (48) · Saint Hilaire du Touvet (64) · Charmant Som (47)