Newest observations
-
Helsinki, A fireball at night, as bright as a crescent moon
III
28.3.2023 at 22.54 -
Hyvinkää, A fireball at night, brighter than the venus
III
28.3.2023 at 22.54 -
Inari, A fireball in a twilight sky
III
28.3.2023 at 20.15 -
Inari, A fireball in a twilight sky
III
28.3.2023 at 20.15 -
Inari, A fireball in a twilight sky
III
28.3.2023 at 20.15 -
Helsinki, Jollas, Moon
IV
28.3.2023 at 20.03 -
Oulu, One halo form
I
28.3.2023 at 10.30 -
Fregenal de la Sierra, Espanja, Telescopic comet PANSTARRS
II
28.3.2023 at 05.32 -
Kuusamo, Käylä, Moon
III
28.3.2023 at 00.05 -
Kuusamo, Markarian's Chain
27.3.2023 at 23.10 -
Kuusamo, One halo form
I
27.3.2023 at 18.50 -
Vaasa, One halo form
I
27.3.2023 at 16.10
Contact information
Visibility I / V
Jorma Ryske, Etelä-Suomen kosmol. seura
The pressure wave of the volcanic eruption in Tonga is shown in the graph of the pressure gauge of the Artjärvi Viestikallio (60.73N, 26.21E) weather station. The first pressure wave reached Viestikallio weather station on January 15, 2022, maximizing at about 20:13 EET / 18:13 UTC, and the second inverse-looking pressure wave on January 16, 2022 at about 04:55 EET / 02:55 UTC. #TongaVolcano .
The observation category "Storm Phenomenon" should be interpreted a bit broadly in this observation :-)
Desktop version of the site
Show the mobile version
Site development by the Skywarden team and E. Bruus.
© 2011- 2023 Ursa Astronomical Association. All rights reserved.
Privacy policy
Tästä tapahtumasta Scott Manleyn loistava esitys Y-tubessa:
Volcanic Eruption May Be Biggest Ever Seen From Spacehttps://www.youtube.com/watch?v=zoMRwyNhqJ4
Mielenkiintoista... Vesannolla on minulla yleiseen sääreurantaan ollut pari BlueAstro USB säätikkua. Sielläkin pari "nököä" näkyy käyrällä. Ovat ilmanpaine käyrälle tallentuneet, vaikka ilmeisesti ei SQL tietokantaan asti data päädy, win10 asennuksen ongelmien jälkeen. Kaivan nuo esille ja voisin tehdä erillisen havainnon, jos ajat täsmää...
Interesting. A friend opf mine caught the first explosion's pressure wave both ways around the globe, see here
https://forum.meteoros.de/viewtopic.php?f=2&p=237034#p237033
What about the signal at 4:55: was it from a second eruption at Tonga?
Yes, that's very probably the case here, also according to some twitter discussions ( https://twitter.com/mikarantane/ ) the second shockwave has round the earth at opposite direction, ie the first shockwave came to Finland shorter route from about north and second shockwave longer route from about south. Timings between Germany and Finland can be quite different because of different distances to Tonga. In this graph is visible also smaller anomaly at 01:50EET/23:50UTC, not sure if it's related to this at all.
Okay, thanks! I checked the distances from Tonga to Artjärvi, which are 10 000 km different between both ways. This leads to an estimated delay of 9:04 for the longer path, which is consistent with the recording. So no second explosion signature so far, probably.