Crozet (Les Deux Potes)
📍 Rhone-Alpes , Departement de l'Ain · Nearest city: Sergy (5 km)
58 XC score / 100 · takeoff at 1512 m · 📍 View on map
Coordinates and external links
46.29860, 5.98333Forecast next days
Updated: 2026-04-19 16:09 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día volable, condiciones decentes, base de cúmulos ~856 m, viento 14 km/h.
base ~856m · wind 14 km/hCondiciones marginales, base de cúmulos ~972 m, viento 16 km/h.
base ~972m · wind 16 km/hCondiciones marginales, base de cúmulos ~1205 m, viento 22 km/h.
base ~1205m · wind 22 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 55 at 11h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (82/100) — base bajo freezing con CU
| 08 30 | 09 30 | 10 30 | 11 55 | 12 55 ☁️⚠️ | 13 45 ☁️⚠️ | 14 45 ☁️⚠️ | 15 55 ☁️⚠️ | 16 55 ☁️⚠️ | 17 30 ☁️⚠️ | 18 55 | 19 55 | 20 50 |
Peak 11h: CAPE 0 J/kg · LI 3.4 · BL top 800 m · w* 0.0 m/s · cloud base 2387 m · 0°C at 2640 m · Pro score 62/100 · sun 39° over slope
2026-04-21❌ Not recommended · peak 55 at 17h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (96/100) — base bajo freezing con CU
| 08 30 | 09 30 | 10 30 | 11 35 | 12 35 | 13 35 ☁️⚠️ | 14 30 ☁️⚠️ | 15 20 ☁️⚠️ | 16 50 ☁️⚠️ | 17 55 ☁️⚠️ | 18 55 ☁️⚠️ | 19 40 ☁️⚠️ | 20 25 ☁️⚠️ 🏔️ |
Peak 17h: CAPE 0 J/kg · LI 3.7 · BL top 1270 m · w* 0.0 m/s · cloud base 2687 m · 0°C at 2320 m · Pro score 62/100 · 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: 11:00 (peak of the day)
Surface T: 8.3°C · Td: 1.3°C
LCL (cloud base): 875 m
BL top: 800 m
0°C level: 2640 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) | 5 | Medium |
| Avg thermal probability | 0.72 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.62 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
Le décollage est favorable de NE, E, SE à S. C’est défavorable s’il est orienté de SO, O, NO à N. Suivant la force des vents SO, O à N, il est tout à fait possible de décoller des Deux potes mais attention aux turbulences.
Pilot comments
TMA de Genève : donc strict respect de la réglementation aérienne. Réserve naturelle nationale de la Haute Chaîne du Jura : restrictions de survol par arrêté préfectoral.
Nearby sites
Petit Mont-Rond (46) · Mijoux (46) · Septmoncel (42) · La Vesancière (65) · Chenevrier (32) · Lezat (11)