La Vesancière
📍 Rhone-Alpes , Departement de l'Ain · Nearest city: Gex (4 km)
65 XC score / 100 · takeoff at 1250 m · 📍 View on map
Coordinates and external links
46.36780, 6.08028Forecast next days
Updated: 2026-04-20 13:19 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Día volable, condiciones decentes, base de cúmulos ~751 m, viento 8 km/h.
base ~751m · wind 8 km/hDía volable, condiciones decentes, base de cúmulos ~1033 m, viento 18 km/h.
base ~1033m · wind 18 km/hCondiciones marginales, base de cúmulos ~1108 m, viento 21 km/h.
base ~1108m · wind 21 km/hNo recomendable para volar, base de cúmulos ~1556 m, viento 16 km/h.
base ~1556m · wind 16 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 12h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (75/100) — base bajo freezing con CU
⏰ Useful window: 15:00 – 16:00
| 08 30 | 09 30 | 10 30 | 11 50 | 12 55 | 13 55 | 14 50 | 15 45 ☁️⚠️ | 16 55 ☁️⚠️ | 17 45 ☁️⚠️ | 18 50 ☁️⚠️ | 19 50 | 20 50 |
Peak 12h: CAPE 0 J/kg · LI 3.0 · BL top 1180 m · w* 0.0 m/s · cloud base 1950 m · 0°C at 2630 m · Pro score 76/100 · sun 40° over slope
2026-04-21❌ Not recommended · peak 60 at 16h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (92/100) — base bajo freezing con CU
| 08 30 | 09 30 | 10 35 | 11 35 | 12 35 | 13 30 ☁️⚠️ | 14 30 ☁️⚠️ | 15 40 ☁️⚠️ | 16 60 ☁️⚠️ | 17 55 ☁️⚠️ | 18 50 ☁️⚠️ | 19 40 ☁️⚠️ | 20 25 ☁️⚠️ |
Peak 16h: CAPE 0 J/kg · LI 3.7 · BL top 1530 m · w* 0.0 m/s · cloud base 2575 m · 0°C at 2290 m · Pro score 72/100 · sun 24° 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: 12:00 (peak of the day)
Surface T: 9.2°C · Td: 3.6°C
LCL (cloud base): 700 m
BL top: 1180 m
0°C level: 2630 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 | 4 km/h S | gust 22 | 7 km/h SE | gust 25 | 4 km/h N | gust 26 |
| 2026-04-21 | 5 km/h E | gust 22 | 6 km/h E | gust 25 | 13 km/h E | gust 51 |
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) | 8 | High |
| Avg thermal probability | 0.84 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.65 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Nearby sites
Mijoux (46) · Petit Mont-Rond (46) · Noirmont (29) · Crozet (Les Deux Potes) (58) · Septmoncel (42) · Chenevrier (32)