On the 20th of june, a very nice supercell occured in the northern Alps. I intercepted the storm from the "Salève", a 1300m moutain close to Geneva. The base of the cumulonimbus was so low that I could take the strikes over Geneva from above. It's really a wonderful experience. Here are a few photos...
There are a few more photos on the French storm chasing forum http://foudre.chasseurs-orages.com/viewtopic.php?t=1515