SOHO Telemetry Submode changed to Submode 5 on 2004/04/13 at 16:00 UT (SUMER began observing on 2004/04/14). SUMER campaign runs until 2004/06/17. In other words, LASCO synoptic observation plan cadence remains the same but the EIT CME watch images will be reduced to half-resolution (512x512) during that period.
11:54 UT First C2 image after recovery. Test image. 13:27 UT First LASCO C2 image (synoptic observation plan). 13:42 UT First LASCO C3 image (synoptic observation plan). 19:27 UT S West Ragged loop front followed at 21:26 UT to SE by a couple of wide loops. By that time a front begins to be visible above NW. The resulting complex event becomes a 'full' halo CME as seen in C2 FOV by 23:06 UT, though rather faint above the W Limb. EIT show no signatures of the event on the disc. Likewise, there is no report of a flare by the time. Therefore, the event was most probably backsided.
04:26 UT N West Bright ragged front. EIT Fe XII running difference images show CME coming out from just behind the NW limb starting at around 02:36 UT. 07:27 UT W Limb Front to S of previous event preceded by a faint and diffuse front to S at 06:26 UT that quickly fades. The front fades throughout C2. It could be related to C 1.9 X-ray flare occurred on S14W42 between 05:35 - 05:55 UT with peak emission at 05:47 UT. EIT show signatures of the event (wave and dimming toward W and N) starting at ~05:36 - 05:48 UT.