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!

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

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