00:54 UT SS West Another ragged front quickly surpassed by the following event. 02:54 UT S Pole Very bright and wide loop front all above the S Pole, preceded by a diffuse front that fully surrounds the occulting disk (signal barely above the limb on N, almost at the end of the C2 FOV on the S). An increase of cosmic rays (proton storm) starts to be observed at 03:06 UT; by 03:34 UT the images are almost fully degraded by the ongoing proton storm. The event is first seen in C3 at 03:18 UT, all above the S Pole. The bulk of the CME heads toward S (as projected onto the plane of the sky). The C3 occulting disk is fully surrounded by 03:42 UT. The mean plane-of-sky speed of the LE (as measured at the edge of the brightest part of the LE) at PA ~ 180 deg was ~ 1440 km/sec. If measured at the outermost edge of the event (i.e., that of the diffuse front ahead of the bulk of the CME) the plane-of-sky speed is ~ 1800 km/sec (both determinations based on C2 and only a couple of C3 frames - afterward images too degraded by the ongoing proton storm -). GOES recorded a X3.4 X-ray flare on NOAA AR 10930 (S06W23) between 02:14 - 02:57 UT with peak emission at 02:40 UT. EIT 195 images show a sudden increase in brightness on AR 10930 by 02:24 UT. A rather circular wave (and dimming) with epicenter on the AR mentioned can be seen afterwards quickly covering the full disk. In summary, the event has therefore been determined as a full halo event, frontsided. 23:48 UT S West Ragged front.
NOTE: ---- Proton storm slowly subsiding. 02:58 UT EN East Ragged (elongated) loop front developing gradually. Last C2 image available by the time of writing: 12:54 UT.