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.
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. 18:26 UT N East Very Faint ragged front. It fades throughout C2.
03:50 UT W Limb Fairly faint ragged front followed by a similar front at 06:50 UT, both developing slightly toward SW. 10:06 UT WS West Narrow and fairly faint ragged front slightly to S of previous event followed a 14:26 UT by a much brighter one. 16:50 UT W Limb Following event at 10:06 UT, ragged loop front and trailing material. Faint extensions (first seen at 17:06 UT) above SW limb up to S Pole that fade in C2. At ~ 19:50 UT a bright and elongated loop front with twisted trailing material develops to S of the ragged front. 20:26 UT N West Vey narrow ragged loop front along starts developing at ~ 4 solar radii. Difficult to give an exact time of first appearance. Some infalling material. Some gusty outflow follows. 23:06 UT S East Ragged and diffuse loop front.
00:26 - 03:50 UT Temporary Data Gap. 04:26 UT S West Loop front. Development missed because of data gap. 05:26 - 13:50 UT Temporary Data Gap. 19:27 UT W Limb Bright and asymmetric loop front. 20:50 UT N East Faint narrow and elongated ragged loop front.
00:26 UT S East Initially bright loop front develops as a 'bubble-like' CME. Some gusty outflow follows. EIT Fe XII shows the development of a backsided event above the SE limb starting at ~ 23:12 UT. 02:06 UT S West Wide and asymmetric loop front develops toward SW in the trail of event reported to start at 19:27 UT on previous day. It is difficult to determine the exact time of first appearance. At 03:06 UT, on the S Pole (at the apparent position of the southern leg of the asymmetric loop), an elongated loop front develops slightly toward SE. The resulting complex event has the appearance of a partial halo CME in C3 FOV. 04:50 UT N East Ragged front superposed with a loop front in the LOS. The ragged front develops faster than the loop, resulting in a complex feature with structured inner part (C2). At ~08:50 UT another ragged loop front develops above the E limb.