Today we got 75 km task to fly. 3 turn points where in the mountains and 3 in the flats after it we go on final glide to footboy field over Piedrahita. Already on the way to the first turn point we could observe big clouds building up in mountains in back of our ridge. I was observing in hole the way. It wasn’t moving very quick toward us so I was continuing to fly the task. I got to group with Achim Joos and we went together in to the flats. Wind up there was strong and it was difficult to get to 4 turn point. In between clouds on back overdeveloped and it did start to rain out of it. It was decided to stop the task cause of this clouds. On the end it was stopped 7 min too fast to have it valid. 30 min after I landed I herd first thunder. Just after I got home started to rain.