I’ll comment more extensively after I post the picture. So these were only few of the ones that “popped in” to my consciousness as I drove back from coffee today. And I noticed them extensively in Kona during the last two or three weeks…
The weather phenomenon was probably formed by ice crystals in the sky reacting with a ‘plate’ of droplets a bit lower down in the skies, according to the Finnish Meteorological Institute. On closer examination it looks almost too perfect to have been caused naturally.