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: 2026-04-21 01:19 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~1051 m, strong wind (28 km/h).
base ~1051m · wind 28 km/hNot recommended for flying, cloud base ~1134 m, strong wind (39 km/h).
base ~1134m · wind 39 km/hMarginal conditions, cloud base ~2277 m, wind 14 km/h.
base ~2277m · wind 14 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21❌ Not recommended · peak 40 at 14h
- Very stable day (CAPE<50, LI>2) — no thermals
- High cloud suck (87/100) — base below freezing with 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: 14:00 (peak of the day)
Surface T: 7.7°C · Td: -3.5°C
LCL (cloud base): 1400 m
BL top: 1465 m
0°C level: 1610 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
🌬 Daily wind (next days)
Daily summary (10m wind). Full hour × altitude chart is being added progressively.
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) · Treh-markstein - la-breymath (dite la carrie) - oderen (5) · Schnepfenried (48) · Landing field (5) · Landing field Petite Hohneck (5)