Comment Section

Weak shock arrival on the 11th, with another stronger shock apparent around 15:00 UT on the 12th. These are followed by a strong magnetic field and velocity enhancement, that show indications of magnetic field rotation and expansion. Very strong magnetic field, but very little of it was pointed southward (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.