The Sun today - 9 July 2017 - nice spot group

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Now it looks like it's been renamed as region 2670 (≥ Aug. 2), with no promising and faded activity, and almost down for the count (at least for now):
https://www.spaceweatherlive.com/en/news/view/291/20170802-sunspot-region-2670

Here is a brief update/review on its history (from the above link):

"
logo.png

Sunspot region 2670

Wednesday, 2 August 2017 - 16:49 UTC

291-header.jpg


Old sunspot region 2665 which caused a couple of large far side eruptions has now rotated back onto the earth-facing solar disk. It has received sunspot region number 2670 from the NOAA SWPC. Due to the activity this sunspot region displayed while it was on the far side, hopes were high for its return. So what is left of this group and should we expect more solar flares?

Well... no. We are looking at a sunspot region that was likely much larger on the far side and it has decayed a lot the past week or so. We only see two sunspots at the moment and an enormous amount of faculae. Faculae are bright areas that form when sunspot regions decay so it tells us something about this region's history. Sunspot region 2670 has a lot of faculae surrounding the two spots (see our header image made using the white light SDO/HMI image) which is a sign that this group used to be much larger and has decayed significantly.

Also worth nothing is that the region produced no major coronal mass ejections since 28 July so it is pretty safe to say that this region is down for the count. At least for now. It can regrow new spots so we shouldn't rule out the region completely but for now the chance that we are getting a strong solar flare from this region seems very low.
"

However, active geomagnetic conditions since yesterday (Aug. 3), with Kp 4:
https://www.spaceweatherlive.com/en/auroral-activity/the-kp-index

What will happen by eclipse time? (a few days away)
 
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What will happen by eclipse time? (a few days away)
Currently (Aug. 12, 2017, ~10pm EST, US (DST) ), from:
https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions
logo.png

Sunspot regions

On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events. This page is updated daily and the sunspot images every hour.

SDO_HMIIF_512.jpg


Region 2670
Number of
sunspots
Size Class Magn. Class Spot Location
1 100 -10 HSX S07W72
2670_HMIIF.jpg
2670_HMIBC.jpg


So it's bye bye baby! ... This is almost the last we'll be seing of it! So hurry for last minute final observations and ... camera, bino, telescope and eye tests ... . However, "falcon eye" won't work this time! ... Not a chance! (I even tried it on the previous post and it was already barely on the limit back then.)
 
  • #29
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New one!:
logo.png

Sunspot regions

On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events. This page is updated daily and the sunspot images every hour.

SDO_HMIIF_512.jpg


Region 2671 New
...

...

https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions


Right on time(?), perhaps for the eclipse, to have something under totality. We'll see ...
It's producing flares too! ...
Check out:
https://www.spaceweatherlive.com/en/news/view/294/20170814-coronal-hole-faces-earth

And cool flare video here (If only the eclipse was today!!):
https://www.spaceweatherlive.com/en...14-new-active-region-producing-c-class-flares
 
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  • #30
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Region 2671 turned into an interesting group:
(currently [Wed. Aug 16, 2017 (~12pm EST, DST)] from https://www.spaceweatherlive.com/en/solar-activity/sunspot-regions)

"
logo.png

Sunspot regions

On this page you'll find an overview of all the visible sunspot regions on the Sun together with their properties, images and the chances on solar flares or proton events. This page is updated daily and the sunspot images every hour.

SDO_HMIIF_512.jpg


Region 2671
Number of
sunspots
Size Class Magn. Class Spot Location

11 9 170 100 EAI N10E53
2671_HMIIF.jpg
2671_HMIBC.jpg

Flare probabilities
C M X Proton
40% 10% 1% 1%
Solar flares from today
B2.8 B3.7 B2.4 B5.2 B3.6
Back to top

Current data suggest that it is not possible to see aurora now at middle latitudes

Latest news

294-thumb.jpg

Monday, 14 August 2017 - 18:56 UTC
Coronal hole faces Earth

293-thumb.jpg

Monday, 14 August 2017 - 13:21 UTC
New active region producing C-class flares


More news
Today's space weather
Auroral activity Minor Severe
High latitude 25% 55%
Middle latitude 15% 5%
Predicted Kp max 4
Aurora forecast HelpMore data
Solar activity
M-class solar flare 10%
X-class solar flare 1%
B2.8 B3.7 B2.4 B5.2 B3.6
Sunspot regionsMore data
Moon phase
Last Quarter "

Also, minor G1 geomagnetic storm is expected to reach earth tomorrow Thu, due to the initial flare last Mon.
 
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  • #31
russ_watters
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Oh, awesome - this will help with focus and give something else to look at during partial.
 
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Oh, awesome - this will help with focus and give something else to look at during partial.
Indeed!
 
  • #33
davenn
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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 :smile:
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

ch.JPG



cheers
Dave
 
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  • #34
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actually, no, that isn't the reason :smile:
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.

"
logo.png

Coronal hole faces Earth

Monday, 14 August 2017 - 18:56 UTC

294-header.jpg


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/
 
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  • #36
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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.
SDO_HMIIF_512.jpg


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.
 
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  • #37
Andy Resnick
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Acquired this image yesterday during equipment check-out for today (Monday). IIRC, 800/8, 1/125s ISO 200, using an ND 6 filter.

aDSC_8659_zpskpxgckov.jpg
 
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