Newest observations
-
Kangasala, One halo form
I
29.5.2023 at 05.36 -
Helsinki, Moon
III
28.5.2023 at 23.02 -
Kurikka, Moon
V
28.5.2023 at 22.26 -
Saarijärvi, Primary rainbow
IV
28.5.2023 at 22.09 -
Ilmajoki, One halo form
I
28.5.2023 at 22.08 -
Tampere, One halo form
I
28.5.2023 at 21.26 -
Masku, Several halo forms
II
28.5.2023 at 21.10 -
Vantaa, Other special clouds
IV
28.5.2023 at 15.38 -
Lappeenranta, Several halo forms
II
28.5.2023 at 10.50 -
Keuruu, One halo form
I
28.5.2023 at 09.09 -
Turku, Several halo forms
II
28.5.2023 at 06.30 -
Turku, Lunar pollen corona
III
28.5.2023 at 01.00
Contact information
Visibility I / V
Proton aurora borealis in the southern sky. These are formed when the fast plasma of the substorm plunges into the inner magnetosphere. In the region of the ring current, the pre-existing cold and dense plasma reacts with the hot, kinetically energetic plasma to form EMIC waves. The EMIC waves then cause the protons to plunge into the upper atmosphere, and thus diffuse, slightly blue-refracting patches are formed in a significantly southern location compared to the normal oval. The light streak in the picture is, on the other hand, artificial light. #diffuusi
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