Treh markstein
📍 Alsace , Departement du Haut-Rhin · Nearest city: Fellering (4 km)
60 XC score / 100 · takeoff at 1227 m · 📍 View on map
Coordinates and external links
47.92570, 7.01188Forecast 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 ~850 m, viento 13 km/h.
base ~850m · wind 13 km/hCondiciones marginales, base de cúmulos ~1188 m, viento 21 km/h.
base ~1188m · wind 21 km/hNo recomendable para volar, base de cúmulos ~1529 m, viento fuerte (27 km/h).
base ~1529m · wind 27 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 15h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (100/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 30 ☁️⚠️ | 10 30 ☁️⚠️ | 11 20 ☁️⚠️ | 12 50 ☁️⚠️ | 13 40 ☁️⚠️ | 14 50 ☁️⚠️ | 15 55 ☁️⚠️ | 16 25 ☁️⚠️ | 17 35 ☁️⚠️ | 18 35 ☁️⚠️ | 19 10 ☁️⚠️ | 20 10 ☁️⚠️ |
Peak 15h: CAPE 10 J/kg · LI 3.7 · BL top 1365 m · w* 0.0 m/s · cloud base 2302 m · 0°C at 2020 m · Pro score 53/100 · sun 29° over slope
2026-04-21❌ Not recommended · peak 40 at 14h
- Día muy estable (CAPE<50, LI>2) — sin térmicas
- Cloud suck alto (87/100) — base bajo freezing con CU
| 08 35 ☁️⚠️ | 09 30 ☁️⚠️ | 10 30 ☁️⚠️ | 11 35 ☁️⚠️ | 12 35 ☁️⚠️ | 13 35 ☁️⚠️ | 14 40 ☁️⚠️ | 15 30 ☁️⚠️ | 16 25 ☁️⚠️ | 17 20 ☁️⚠️ | 18 20 ☁️⚠️ | 19 25 ☁️⚠️ | 20 35 ☁️⚠️ |
Peak 14h: CAPE 10 J/kg · LI 5.0 · BL top 1465 m · w* 0.0 m/s · cloud base 2627 m · 0°C at 1610 m · Pro score 58/100 · sun 34° 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: 15:00 (peak of the day)
Surface T: 9.1°C · Td: 0.5°C
LCL (cloud base): 1075 m
BL top: 1365 m
0°C level: 2020 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) | 12 | High |
| Avg thermal probability | 0.74 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.47 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Takeoff description
Very nice and big. And very big landing at takeoff! Height : 1200 meters.
Rules and notes
http://lavl.free.fr/paragliding-vosges.html :Vosges Airspace Areas or in french with maps : http://lavl.free.fr/Espace-Aerien-Vosges.html
Pilot comments
Be carefull with local airspace rules (airport near)
Nearby sites
Siebach 300 (45) · Stockenberg (51) · Schnepfenried (48) · Gustiberg (56) · Rothenbachkopf (51) · Petit Drumont (46)