Major far side coronal mass ejection

Sunday, 23 July 2017 - 11:05 UTC

Major far side coronal mass ejection

An absolutely massive far side coronal mass ejection can now be seen on both STEREO and SOHO coronagraph imagery.

The coronal mass ejection as captured by the SOHO/LASCO C2 coronagraph. 

it is a very fast and dense symmetrical full halo coronal mass ejection. A very impressive event indeed but do note that it came from the far side and the plasma cloud is directed away from us. There is no chance that it will arrive at Earth. It is very rare we see such fast and nice halo eruptions and if it would be earth-directed these kind of plasma clouds could easily cause severe to extreme geomagnetic storming.

Source of this massive plasma cloud looks to be a solar flare from old sunspot region 2665 as you can see on our header image at the top of this page. We do not have a satellite like the GOES-series that monitors far side solar X-ray emissions but using STEREO imagery it looks like this was at least a high M-class solar flare, perhaps an X1 event.

Amazing to look at, but (un)fortunately not aimed at our planet!

Never want to miss one of our news articles again? Subscribe to our mailing list! Always want to be up to date of the latest space weather events? Our Twitter account is the place to be for the latest space weather alerts or if you don't have Twitter you can sign up for the push alerts! Unsure what all of this space weather tech talk means? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Do you still have a burning question after digging trough our help section? You are more than welcome to post on our forum where we will personally help you the best we can!

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

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 25% 30%
Middle latitude 5% 1%
Predicted Kp max 3
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
Waning Crescent

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

100%

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/09/09M1.1
Last geomagnetic storm:2017/10/15Kp5 (G1)
Number of spotless days in 2017:64
Current stretch spotless days:2

This day in history*

Solar flares
12015M1.5
22013M1.2
32001M1.1
42015M1.1
51998C9.1
ApG
1200332G2
2199921G1
3201620
4200514
5200213
*since 1994