Observed phenomena: Cumulonimbus incus mamma (cumulonimbus with anvil and mammatus clouds)
Observing place: Turku, Finland
Observing method: Photography
Technical information about photographing equipment: Olympus μ 1030 SW
In the evening of 5th of July 2013, I observed a really magnificent cumulonimbus -cloud in Turku, Finland. The cloud looked like a mature thunderstorm -cloud, but it didn’t develop a storm of any kind. Instead, it started to collapse, and while dissipating, it produced some nice mammatus clouds! Althought the cloud didn’t put up any good thunderstorm -show as I had expected, it was nevertheless fun to watch!