Eruptive event on 2006 December 13 observed on the Solar disk. Panel a) is an MDI image at 01:39 UT showing AR 10930, with a white box indicating the size of the five other panels. Panel b) is a BBSO Hα image at 01:57 UT to show a dark filament (white arrow). The contours on panels b), c), and d) show values of the line-of-sight magnetic field taken from the MDI magnetogram at the closest time with levels of  ± (50,100,300,500,1000)   G, which also serve to locate the AR neutral line. Panel c) shows an EIT EUV image at 02:12 UT, in which the filament is also visible (white arrow). Panel d) is an EIT EUV image at 03:36, taken after the X3.4 class flare, showing a bright region in post-flare loops (white arrow) where the flare occurred. Panels e) and f) are soft X-ray images from Hinode/XRT, which show an MHD shock wave (white arrow in panel e)) at 02:24 UT, and a plasmoid ejection (white arrow in panel f)) at 02:26 UT, prior to the flare peak.