by Max Barry

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«12. . .12,19912,20012,20112,202

Bhang Bhang Duc wrote:Looked out of the north facing door at 23:00 BST and couldn’t see anything apart from a nice crescent Moon with earthshine setting in the north-west. It wasn’t until I went outside and looked up that I saw the aurora.

Just a hint of a vague veil of purple and red when I looked from the backyard in Central Arkansas. I decided to take a drive with the top down, so I could glance around at the sky on some local roads with less lighting. A bit more obvious, but still vaguely there. There are some good local pictures. But best overexposed photo I got shows some blue/purple in the NW sky fading to black at zenith.

Looks like we're currently at Kp7, G3 storm levels. Hemispheric power down to 236GW from the 357GW last night. Although I read, "anything over 200GW is massive." Looks good for another evening of aurora tonight.

One of the best pictures I've seen of the aurora was shot from the Gold Coast that included bioluminescent algae glowing blue on a ocean swell below the aurora filled sky.

Bhang Bhang Duc wrote:Looked out of the north facing door at 23:00 BST and couldn’t see anything apart from a nice crescent Moon with earthshine setting in the north-west. It wasn’t until I went outside and looked up that I saw the aurora.

Wide band running east to west through the overhead. White in colour with some red in the west and a coronal structure just to the south of the overhead.

Currently have a G5 extreme geomagnetic storm in effect with a couple more CMEs to come. Strong likelihood of more auroras over the weekend.

The culpable sunspot group has let off two more X-class flares in the last twelve hours or so, but any CME from these would probably miss us.

Are we now at the peak of the sunspot cycle?

Locksley Hall wrote:Are we now at the peak of the sunspot cycle?

Sometime in the next six months or so, maybe into early 2025.

Bhang Bhang Duc wrote:Sometime in the next six months or so, maybe into early 2025.

How far do the large CME travel before they start to dissipate?

Locksley Hall wrote:How far do the large CME travel before they start to dissipate?

Think of them as an expanding ball of plasma - the further they move from the Sun the larger they are but less “concentrated”. Their effects are still measurable though - the Voyager probes have detected large CMEs out beyond the orbit of Pluto.

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