Montgellafrey
📍 Rhone-Alpes , Departement de la Savoie · Nearest city: Saint-Remy-de-Maurienne (4 km)
60 XC score / 100 · takeoff at 1791 m · 📍 View on map
Coordinates and external links
45.40810, 6.31640Forecast next days
Updated: 2026-04-19 16:07 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día volable, condiciones decentes, base de cúmulos ~1293 m, viento 8 km/h.
base ~1293m · wind 8 km/hDía volable, condiciones decentes, base de cúmulos ~1005 m, viento 12 km/h.
base ~1005m · wind 12 km/hDía volable, condiciones decentes, base de cúmulos ~1429 m, viento 12 km/h.
base ~1429m · wind 12 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-20✅ Flyable · peak 68 at 17h
| 08 40 ☁️⚠️ | 09 40 ☁️⚠️ | 10 50 ☁️⚠️ | 11 50 ☁️⚠️ | 12 50 | 13 60 ☁️⚠️ | 14 60 ☁️⚠️ | 15 60 ☁️⚠️ | 16 60 ☁️⚠️ | 17 68 | 18 50 | 19 50 | 20 60 |
Peak 17h: CAPE 0 J/kg · LI -0.1 · BL top 1315 m · w* 0.0 m/s · cloud base 2691 m · 0°C at 2750 m · Pro score 62/100 · sun 17° over slope
2026-04-21❌ Not recommended · peak 60 at 17h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (77/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 30 ☁️⚠️ | 10 30 ☁️⚠️ | 11 50 ☁️⚠️ | 12 30 | 13 35 | 14 35 ☁️⚠️ | 15 55 ☁️⚠️ | 16 50 ☁️⚠️ | 17 60 ☁️⚠️ | 18 55 | 19 55 ☁️⚠️ | 20 50 ☁️⚠️ |
Peak 17h: CAPE 10 J/kg · LI 2.9 · BL top 1410 m · w* 0.0 m/s · cloud base 2691 m · 0°C at 2550 m · Pro score 57/100 · sun 17° 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: 17:00 (peak of the day)
Surface T: 7.5°C · Td: 0.3°C
LCL (cloud base): 900 m
BL top: 1315 m
0°C level: 2750 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) | 4 | Medium |
| Avg thermal probability | 0.88 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.61 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
Alti: 1790m Grass slope, walk a few minutes.
Pilot comments
good starting for XC, especially during summer and, maybe, automn: high take-off.
Nearby sites
Col de la Madeleine (61) · St jean de maurienne (10) · Val Pelouse (56) · Chamoux (48) · Allevard-les Plagnes (63) · Allevard-south takeoff (61)