G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

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Carbon60
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G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by Carbon60 » Sun Aug 26, 2018 6:45 pm

Earth is passing through the wake of a CME with a strong southerly directed magnetic field. Overnight his produced a strong response on my magnetometer located here in the NW of England, as it did in other parts of the world and also on Carl's magnetometer as detailed in his post.

I've plotted my hi-res data for a change, captured at 1s cadence plus a 'rate of change' plot. Both clearly show when earth entered the wind stream. The wind gave rise to a G3 storm with a planetary 'K' index of 7, meaning that aurorae were visible at latitudes much lower than usual.
20180826_CME.jpg
20180826_CME.jpg (284.57 KiB) Viewed 259 times
Thanks for looking.

Stu.
Last edited by Carbon60 on Mon Aug 27, 2018 9:35 am, edited 1 time in total.
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018

Post by carlosjackal » Mon Aug 27, 2018 8:14 am

Good to see our hi Res matching nicely Stu.
Carl

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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018

Post by Carbon60 » Mon Aug 27, 2018 9:37 am

carlosjackal wrote:
Mon Aug 27, 2018 8:14 am
Good to see our hi Res matching nicely Stu.
Carl
Absolutely. :)
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by Carbon60 » Mon Aug 27, 2018 9:46 am

The previous chart was captured mid-way through the event. Here's the event in full. I've also plotted professional data captured by a station in France (Chambon la Foret- part of the 'Intermagnet' network) as a point of reference.
20180826_CME_Full.jpg
20180826_CME_Full.jpg (95.34 KiB) Viewed 248 times
It would appear that this concludes the impact of the wake of the CME. Up next should be some further geomagnetic unrest from a coronal hole later this week.

Thanks for looking.

Stu.
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by Montana » Tue Aug 28, 2018 6:51 am

Excellent Stuart, I received lots of alerts during the day on the 26th which is no good for aurora watching but I hoped you would be capturing it. It was raining constantly anyway so you have a far superior way of watching these events :bow

Alexandra

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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by marktownley » Tue Aug 28, 2018 7:44 pm

Good record Stu!

It was cloudy up here on the saturday night, but sunday night was clear so I was ready and waiting:

I initially saw some arcs to the north as the sky was going dark, but these turned out to be cloud
IMG_0511.JPG
IMG_0511.JPG (3.05 MiB) Viewed 212 times
I took a few shots of this and went back inside to inspect in the warmth as temperature was hovering around freezing, but then glanced up out of the window and bingo! There's the aurora... I raced outside and framed up:
IMG_0514.JPG
IMG_0514.JPG (3 MiB) Viewed 212 times
Things were looking good! I wanted the Defender in shot, but this meant I was getting traffic from the road, which was annoying!
IMG_0515.JPG
IMG_0515.JPG (3.08 MiB) Viewed 212 times
So a nudge on the tripod
IMG_0516.JPG
IMG_0516.JPG (3.07 MiB) Viewed 212 times
And one final nudge before those pesky headlights were out of shot. Then a run of 134 frames, 20s each, iso800 10mm f4 on the 350D, soover about 45 minutes.

Imageaurora-time-lapse by Mark Townley, on Flickr

The cloud was rolling in, and this brief burst of activity looks like it was pretty much it for the night looking at the kP index data.

However heading back in and old moonface who was hugging the southern horizon was putting on a nice halo display, so, 9 minutes in his company

Imagemoon-dog-timelapse by Mark Townley, on Flickr

Also fits in quite nicely with what halosim was showing...
moon-dog.jpg
moon-dog.jpg (502.14 KiB) Viewed 212 times
Weather has since turned to winter with snow on the mountains, but clear skies later in the week mean I will be keeping an eye out!

Mark
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by Carbon60 » Tue Aug 28, 2018 8:28 pm

Excellent, Mark. Glad to see you finally managed to see something. Nice animations.

Stu.
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by p_zetner » Wed Aug 29, 2018 2:22 am

Great data recording, Stu. The match with Chambon la Foret is amazing.

Mark, your pictorial follow up is awesome. Seems like your trip is going well.

Cheers, Peter.

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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by Montana » Wed Aug 29, 2018 6:54 am

Fantastic set of animations Mark. Looks like it was quite a short burst of activity that night. I hope you get some more clear skies.

Alexandra

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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by marktownley » Wed Aug 29, 2018 8:15 am

Thanks folks, the burst was about 15 minutes by eye, a little longer in the camera. Clear skies forecast tonight, all the batteries are charged ready!
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Re: G3 solar storm- Magnetometer response 25th-26th Aug 2018_Updated

Post by carlosjackal » Wed Aug 29, 2018 4:45 pm

Love the time lapse Mark!

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