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.
N East Gusty outflow all along the day. 00:26 UT S East Slow development of a very faint feature later showing extensions up to the S Pole and making next event appear even wider. 04:50 UT W Limb Wide and bright ragged loop front with structured inner part. B1.9 X-ray flare reported by GOES on NOAA AR 10604 (located by the time at S19W29) between 03:48 - 04:04 UT with peak emission at 03:55 UT. EIT Fe XII shows a filament channel activation at ~S20W25 between 01:48 and 03:48 UT. Despite its wide angular span in C2 and C3 (e.g., from ~PA 180 - 330 by 14:18 UT in C3) the CME signature is not seen to cross the central meridian. Therefore, it could not be catalogued as a partial halo. The average plane-of-sky speed for the event measured on C3 data at PA 262 was 345 km/sec showing practically no acceleration. 06:50 UT EN East Faint spray-like front that fades throughout C2. It is followed slightly to S at 07:27 UT by a very narrow ragged loop front. 10:06 UT S West Following event at 04:50 UT, ragged front with twisted trailing material. Faint loop-like extensions above the W limb. 19:50 UT S West Bright ragged loop front. Between ~19:13 - 22:00 UT EIT Fe XII shows a backsided CME on SW limb with some filament motion on the near side.
N East Gusty outflow. 00:06 UT WS West Another bright ragged loop front. The event develops on the W limb as a twisted (and 'round') structure, and on the SW with a ragged structure. 05:10 - 13:30 UT Temporary DSN Data Gap.