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Weekend Geomagnetic Storm UPDATED 7th & 9th Oct. 18

Posted: Mon Oct 08, 2018 5:59 am
by Carbon60
Hi,

Fast flowing solar wind from a large canyon shaped coronal hole, with embedded southerly directed magnetic fields, washed over our planet over the weekend creating a G1 storm and beautiful aurora. Here are my magnetometer data captured throughout the event. The storm left our magnetic field ringing like a bell for several hours before returning to relative calm.
20181008_coronal hole.jpg
20181008_coronal hole.jpg (198.46 KiB) Viewed 163 times
Thanks for looking.

Stu.

Re: Weekend Geomagnetic Storm 7th & 8th Oct. 18

Posted: Mon Oct 08, 2018 9:37 am
by marktownley
Good catch Stu, I saw some nice images taken from Anglesey of the resulting aurora.

Re: Weekend Geomagnetic Storm 7th & 8th Oct. 18

Posted: Mon Oct 08, 2018 3:32 pm
by p_zetner
Hi Stu.

Saw the SDO image of the large coronal hole on Spaceweather a couple of days ago and was anticipating your report.
Sure enough .... !

Cheers.
Peter

Re: Weekend Geomagnetic Storm 7th & 8th Oct. 18

Posted: Tue Oct 09, 2018 10:04 am
by Carbon60
Many thanks, Mark/Peter.

Here's an updated one with added data from the DSCOVR satellite which illustrates the corresponding Bz magnetic variations within the solar wind (red line). As this turns south, there's a corresponding increase in geomagnetic activity.
20181009_coronal hole.jpg
20181009_coronal hole.jpg (222.27 KiB) Viewed 111 times
Thanks for your interest

Stu