Petit Ballon
Stay on the ground: the wind is too strong.
Forecast updated 31 Oct, 14:05 · Zurich time · valid 2026-10-31
Conditions score out of 100, not a probability.
At 14:00
1,750 m
Thermal top
Blue
No cumulus
ENE 44
Launch, km/h
89
Gusts, km/h
Hour by hour
No clean windowAt launch · wind, then gusts, km/h
4482469247904897499849924690448940823675347334733472
- 08:00–16:00Wind too strong at launch.
Sunrise 07:16 · sunset 17:16
Wind and thermals aloft
14:00 · top 1,750 m · no cumulus · ENE 51 km/h at 1,800 m
Thermals, deeper yellow the higher they goCumulus on the base, veils higher upWind km/h, bold from 25Launch height
Terrain
The ground around the launch
Loading the terrain…
14:00sun 24°ENE 41 km/h at launch
Geometry from a ~25 m elevation model plus the forecast: rules of thumb, not a flow simulation. Elevation: EU-DEM, produced using Copernicus data and information funded by the European Union, via Terrain Tiles on AWS.
More detail
Days 4–7: lower confidence outlook