Iselten
📍 Bern , Interlaken-Oberhasli District · Nearest city: Bonigen (4 km)
62 XC score / 100 · takeoff at 1830 m · 📍 View on map
Coordinates and external links
46.65640, 7.92202Forecast next days
Updated: 2026-04-21 01:17 UTC · Source: Open-Meteo · Thermal window 10:00–18:00 local time
Very favorable day for XC, cloud base ~384 m, wind 12 km/h.
base ~384m · wind 12 km/hFlyable day, decent conditions, cloud base ~1326 m, wind 12 km/h.
base ~1326m · wind 12 km/hFlyable day, decent conditions, cloud base ~2701 m, wind 9 km/h.
base ~2701m · wind 9 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 60 at 9h
- High cloud suck (100/100) — base below freezing with CU
| 08 40 ☁️⚠️ | 09 60 ☁️⚠️ | 10 50 ☁️⚠️ | 11 50 ☁️⚠️ | 12 50 ☁️⚠️ | 13 55 ☁️⚠️ | 14 60 ☁️⚠️ | 15 45 ☁️⚠️ | 16 55 ☁️⚠️ | 17 45 ☁️⚠️ | 18 45 ☁️⚠️ | 19 40 ☁️⚠️ | 20 40 ☁️⚠️ |
Peak 9h: CAPE 0 J/kg · LI 3.6 · BL top 415 m · w* 0.0 m/s · cloud base 2742 m · 0°C at 2060 m · Pro score 74/100 · 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: 09:00 (peak of the day)
Surface T: 0.4°C · Td: -6.9°C
LCL (cloud base): 912 m
BL top: 415 m
0°C level: 2060 m
Approximate profile from surface variables + synoptic levels. Red lines = temperature, dashed blue = dew point. Orange bands = detected inversions.
Wind chart — altitude × time
Color: green < 20 km/h · yellow 20-30 · red >40. Arrows point to where the wind is blowing. Each column = 1 hour. 4 altitudes: 10m surface, 80m first thermal, 1500m (850 hPa) thermal cruise, 3000m (700 hPa) top.
Wind next days (Open-Meteo model)
Wind rose 10m — 2026-04-21
| Date | Morning 08-12h | Midday 12-16h | Evening 16-20h | |||
|---|---|---|---|---|---|---|
| 2026-04-21 | 4 km/h SW | gust 10 | 10 km/h NW | gust 25 | 9 km/h NW | gust 27 |
Colors: green < 15 km/h (optimal) · orange 15-25 · red >25 (flying not recommended). ⚠️ = shear >25 km/h between 10m and 850 hPa (potentially broken thermals).
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 | 0.83 | Based on thousands of aggregated IGC flights |
| Solar orientation | 0.57 | Slope faces south in northern hemisphere |
| Own flight history | 0.00 | Thermals detected in platform IGC tracks |
Pilot comments
More info on http://www.flyland.ch. Airspaces in Switzerland are a thought subject, get all the info you can get befire flying.
Nearby sites
Schynige Platte -Kamel_Chrüterwand (Interlaken) (44) · Zweilutschinen landing (5) · Maennlichen (Wengen) (68) · Männlichen Station (54) · Mederalp (57) · Klein Tschuggen (49)