asperatus clouds
For me personally, this was likely one of the most defined
asperatus clouds I have seen (making photos of, I mean). Most of the time, when they appear over Stockholm, they are not as well defined - and always far off from the extreme examples of ominous looking
asperatus clouds we have seen on the internet (of which some are clearly exaggerated in post processing).
Nevertheless - the development came rather unexpected. (As the weather situation wasn't anything to call home about)
It started out slowly in a small (but increasing) area at the east horizon, on 18 July 2021 around 18:45, seen from South Stockholm - but developed really beautifully in pronounced waves for the next hour. By the time of 19.13 it took off in a pronounced way, and the scenery looked like this:
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