Comment Section

Clear shock, followed by most of the standard MC signatures (low beta, low density, smooth magnetic field, etc.), but a fairly weak magnetic field rotation.
At 03/27/2015 15:12:08, there may be a partial halo CME corresponding to this magnetic cloud. The solar source of this CME is unknown. (Yutian)

Image Data

A combination of MFI and SWE data from the Wind Satellite:

The grey region shows an approximation of the CME cloud and the red vertical line denotes the shock.