The Sun today - 9 July 2017 - nice spot group

[russ_watters]

Oh, awesome - this will help with focus and give something else to look at during partial.

 

[Stavros Kiri]

Oh, awesome - this will help with focus and give something else to look at during partial.

Indeed!

 

[davenn]

Also, minor G1 geomagnetic storm is expected to reach Earth tomorrow Thu, due to the initial flare last Mon.

actually, no, that isn't the reason
the predicted auroral activity for the 16th and 17th will be due to the huge coronal hole that became geo-effective 2-3 days ago

cheers
Dave

 

[Stavros Kiri]

actually, no, that isn't the reason
the predicted auroral activity for the 16th and 17th will be due to the huge coronal hole that became geo-effective 2-3 days ago ...
...

You're right of course. My mistake. Thanks for correcting.

"

Coronal hole faces Earth

Monday, 14 August 2017 - 18:56 UTC

A southern extension of the northern hemisphere polar coronal hole is now facing Earth. It extended far enough towards the south to trigger our automated coronal hole detection system.

It is hard to say how much of the coronal hole solar wind stream is going to arrive at Earth but the NOAA SWPC believes we will see the solar wind stream at our planet as they issued a minor G1 geomagnetic storm watch for this Thursday which would be 17 August, 2017."

Source: https://www.spaceweatherlive.com/en/news/view/294/20170814-coronal-hole-faces-earth

The solar wind is expected to arrive today Thu Aug. 17, 2017. To monitor and for updates see also:
https://www.spaceweatherlive.com/

http://www.swpc.noaa.gov/

 

[Stavros Kiri]

Today:
G1 - Minor geomagnetic storm
Observed Kp: 5+ (earlier today) - currently 4
[Predicted Kp: 5, or 5+]
(Today Thu Aug 17, 2017)

https://www.spaceweatherlive.com/en/auroral-activity/the-kp-index

https://www.spaceweatherlive.com/

 

[Stavros Kiri]

Another (2nd) sun spot group has just rotated into view (right on time for the eclipse), region 2672. So currently there are two groups: 2671, 2672.

That and more might make the eclipse today more interesting! For more details see e.g.

https://www.physicsforums.com/threads/u-s-solar-eclipse-of-aug-21-2017.866521/page-15#post-5825228

https://www.physicsforums.com/threads/u-s-solar-eclipse-of-aug-21-2017.866521/page-16#post-5825230

Note: further updates of solar activity will continue on a separate thread, coming up.

 

[Andy Resnick]

Acquired this image yesterday during equipment check-out for today (Monday). IIRC, 800/8, 1/125s ISO 200, using an ND 6 filter.

 

[Stavros Kiri]

Note: further updates of solar activity will continue on a separate thread, coming up.

See https://www.physicsforums.com/threads/solar-activity-and-space-weather-update-thread.923468/

[+ take a look at: https://www.physicsforums.com/threads/2-significant-spot-groups-currently-visible.923391/ ]