Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

20 observations and 1 comments in queue.

Only observations that have a description and at least one image attached.

Arcus cloud

9.7.2020 at 22.10 - Vaala (III)
Pekka Hatunen

An avalanche cloud appeared in Lake Oulujärvi when I was waiting for thunderstorms at the Vaala harbor breakwater.9.7 2020. It went over pretty quickly and so I started to harbor hard and went home. A thunderstorm followed, roaring and lightning, but it went unreported.

Images: 5 pcs

Search result contains observations from time period 1.1.2000 klo 00.00 - 28.9.2021 klo 1.04.