On a une belle zone géomagnétique (le "Corona Hole") qui est ligne directe avec la Terre...
A large coronal hole is facing our planet today. Most of you might remember this coronal hole as it is the same coronal hole that faced our planet on 28 August and 24 September. This coronal hole has always been a reliable source for geomagnetic storm activity a few days later. What can we expect this time around?
Let's find out! The size of this coronal hole seems to be fairly similar to the size that it had during the previous rotation. Based on that fact, the geomagnetic storms caused by this coronal hole back in August and September and the data from STEREO Ahead we can conclude that minor G1 geomagnetic storm conditions are likely after the high speed solar wind stream arrives. The Co-rotating Interaction Region (CIR) ahead of the high speed solar wind stream is likely to arrive at Earth on Thursday, 24 October. The NOAA SWPC thinks this as well and has already issued a minor G1 geomagnetic storm watch for Thursday, 24 October. The effects of the high speed solar wind stream should last well into Friday and perhaps Saturday as well. Charge your camera batteries! If you are at a high enough latitude it looks like you are in for some nice auroral activity!
https://www.spaceweatherlive.com/en/news/view/396/20191022-coronal-hole-faces-earth-g1-watch
Rem :
en visuel, nous avons toujours ceci...
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Il faut toujours viser la Lune, car même en cas d'échec, on atterrit dans les étoiles.
(Oscar Wilde)
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