Image of an exceptional thunder cloud - 19.5.2014 at 21.13 Mikkeli
Observation number 25844
A fine thundercloud in the evening sun. Looks small in the picture when I had seen the same live. There was no way to fit the image with the 18 mm lens, the panorama had to be twisted.
A couple of short videos in my Google Plus publications:
A few-frame GIF animation for both Video 1 and Video 2
An automatic panorama by Google Photos.