We say, that a yellow sky before a storm indicates hail. Let's hope it is just a normal thunderstorm approaching. This is taken just 100 meters from my home, looking south over the lake in direction of the Bernes alpes. In the foreground you can see the field, where the paraglieders land. I used a strong ND filter and 54 seconds long exposure, to get the dark clouds a bit blurry.
