Widdersgrind-2020
📍 Bern , Obersimmental-Saanen District · Nearest city: Boltigen (5 km)
59 XC score / 100 · takeoff at 2020 m · 📍 View on map
Coordinates and external links
46.67540, 7.40662Forecast next days
Updated: 2026-04-21 01:20 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Flyable day, decent conditions, cloud base ~747 m, wind 17 km/h.
base ~747m · wind 17 km/hFlyable day, decent conditions, cloud base ~965 m, wind 17 km/h.
base ~965m · wind 17 km/hFlyable day, decent conditions, cloud base ~1536 m, wind 12 km/h.
base ~1536m · wind 12 km/hComposite flyability score (CAPE + LI + wind + precip + low clouds). Cross-check with local pilots before flying.
Detailed hourly weather
2026-04-21⚠️ Marginal · peak 55 at 8h
- High cloud suck (98/100) — base below freezing with CU
| 08 55 ☁️⚠️ | 09 55 ☁️⚠️ | 10 50 ☁️⚠️ | 11 50 ☁️⚠️ | 12 40 ☁️⚠️ | 13 55 ☁️⚠️ | 14 55 ☁️⚠️ | 15 55 ☁️⚠️ | 16 55 ☁️⚠️ | 17 55 ☁️⚠️ | 18 55 ☁️⚠️ | 19 50 ☁️⚠️ | 20 30 ☁️⚠️ |
Peak 8h: CAPE 0 J/kg · LI 3.5 · BL top 90 m · w* 0.0 m/s · cloud base 2132 m · 0°C at 2090 m · Pro score 51/100 · 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: 08:00 (peak of the day)
Surface T: -0.3°C · Td: -1.2°C
LCL (cloud base): 112 m
BL top: 90 m
0°C level: 2090 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) | 6 | Medium |
| Avg thermal probability | 0.79 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.50 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
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.
Nearby sites
Nässli (49) · Wasserscheide (48) · Hohmattli-1770 (57) · Geeristein West (42) · Geeristein Süd (42) · Geeristein Ost (39)