Biel-Raemsenberg-1620
📍 Uri · Nearest city: Burglen (4 km)
60 XC score / 100 · takeoff at 1620 m · 📍 View on map
Coordinates and external links
46.89410, 8.70826Forecast 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 ~523 m, viento 11 km/h.
base ~523m · wind 11 km/hDía volable, condiciones decentes, base de cúmulos ~583 m, viento 13 km/h, precipitación 1.2 mm.
base ~583m · wind 13 km/h · precip 1.2mmDía volable, condiciones decentes, base de cúmulos ~1668 m, viento 11 km/h.
base ~1668m · wind 11 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 68 at 17h
- Cobertura nubosa >85% — sin radiación para disparar
- Cloud suck alto (95/100) — base bajo freezing con CU
⏰ Useful window: 14:00 – 19:00
| 08 50 ☁️⚠️ | 09 50 ☁️⚠️ | 10 45 ☁️⚠️ | 11 45 ☁️⚠️ | 12 55 ☁️⚠️ | 13 60 ☁️⚠️ | 14 60 ☁️⚠️ | 15 45 ☁️⚠️ | 16 60 ☁️⚠️ | 17 68 ☁️⚠️ | 18 55 ☁️⚠️ | 19 55 ☁️⚠️ | 20 60 |
Peak 17h: CAPE 60 J/kg · LI -0.4 · BL top 855 m · w* 8.0 m/s · cloud base 2420 m · 0°C at 2290 m · Pro score 58/100 · sun 17° over slope
2026-04-21⚠️ Marginal · peak 60 at 14h
- Cloud suck alto (95/100) — base bajo freezing con CU
| 08 30 ☁️⚠️ | 09 50 ☁️⚠️ | 10 55 ☁️⚠️ | 11 50 ☁️⚠️ | 12 50 ☁️⚠️ | 13 55 ☁️⚠️ | 14 60 ☁️⚠️ | 15 55 ☁️⚠️ | 16 55 ☁️⚠️ | 17 50 ☁️⚠️ | 18 50 ☁️⚠️ | 19 40 ☁️⚠️ | 20 50 ☁️⚠️ |
Peak 14h: CAPE 10 J/kg · LI 0.7 · BL top 885 m · w* 0.0 m/s · cloud base 2620 m · 0°C at 1650 m · sun 35° 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: 17:00 (peak of the day)
Surface T: 7.2°C · Td: 0.8°C
LCL (cloud base): 800 m
BL top: 855 m
0°C level: 2290 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) | 10 | High |
| Avg thermal probability | 0.81 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.40 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Upcoming competitions in this country
- PWCA Italy Gemona 2026 · 2026-07-25 – 2026-08-01 · PWCA
Copa del Mundo en Gemona del Friuli, Italia
Rules and notes
Airspaces in Switzerland are a tough subject, get all the info you can get before flying. More info on http://www.flyland.ch.
Pilot comments
many, often unmarked, CABLES in the wohle valley ('Schächental')!
Nearby sites
Obfluee (45) · Rietlig (52) · Gisleralp (51) · Ratzi-Rietlig (47) · Gamperstock (50) · Wängihorn (50)