Comment Section

It is difficult to see a lot in the heliospheric imagers corresponding to this event. My best guess is that, if there is a CME driver for this event, it is a plasma blob that can barely be seen in COR2A late on the 10th, and it takes more than a full day to accelerate out of the COR2 field of view. It was very faint and weak in LASCO. After taking more than a day to get out of COR2, it picks up enough speed to reach the Earth in less than 2 additional days. The blob may have been accelerated by another CME that occurred on the 12th. (Hess)

Image Data

A combination of SWEPAM and MAG data from the ACE Satellite:

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The blue lines are an approximation of the CME cloud and the red line denotes the shock.