Lally
📍 Vaud , Riviera-Pays-d'Enhaut District · Nearest city: Blonay (2 km)
56 XC score / 100 · takeoff at 1236 m · 📍 View on map
Coordinates and external links
46.47820, 6.90986Forecast 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 ~1068 m, viento 10 km/h.
base ~1068m · wind 10 km/hDía volable, condiciones decentes, base de cúmulos ~1061 m, viento 15 km/h.
base ~1061m · wind 15 km/hDía volable, condiciones decentes, base de cúmulos ~1273 m, viento 19 km/h.
base ~1273m · wind 19 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-20⚠️ Marginal · peak 55 at 11h
- Cloud suck alto (67/100) — base bajo freezing con CU
| 08 50 | 09 50 | 10 50 | 11 55 | 12 50 ☁️⚠️ | 13 55 ☁️⚠️ | 14 50 ☁️⚠️ | 15 55 | 16 55 ☁️⚠️ | 17 50 ☁️⚠️ | 18 50 ☁️⚠️ | 19 55 ☁️⚠️ | 20 50 |
Peak 11h: CAPE 0 J/kg · LI 0.5 · BL top 815 m · w* 0.0 m/s · cloud base 1986 m · 0°C at 2550 m · Pro score 66/100 · sun 39° over slope
2026-04-21⚠️ Marginal · peak 60 at 15h
- Cloud suck alto (79/100) — base bajo freezing con CU
| 08 35 | 09 55 | 10 55 | 11 55 | 12 55 ☁️⚠️ | 13 55 ☁️⚠️ | 14 55 ☁️⚠️ | 15 60 ☁️⚠️ | 16 40 ☁️⚠️ | 17 40 ☁️⚠️ | 18 35 ☁️⚠️ | 19 30 ☁️⚠️ | 20 30 |
Peak 15h: CAPE 30 J/kg · LI 3.1 · BL top 1210 m · w* 0.0 m/s · cloud base 2273 m · 0°C at 2200 m · Pro score 58/100 · sun 30° 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: 9.5°C · Td: 3.5°C
LCL (cloud base): 750 m
BL top: 815 m
0°C level: 2550 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) | 9 | High |
| Avg thermal probability | 0.81 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.33 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Nearby sites
Pleiades (58) · Dent de Jaman (Rochers de Naye) (60) · Sonchaux (Villeneuve) (60) · Rochers de Naye Antenne (68) · l'Aiguille (51) · Le Moléson-2000 (49)