On 2005/07/06, SOHO Telemetry Submode was changed to Submode 5 (support for VAULT -Sounding Rocket Launch on 2005/07/07). Telemetry Submode will be changed back to Submode 6 on 2005/07/08, exact time still to be confirmed. During TM Submode 5, EIT CME watch in half-res (512x512).
00:30 UT E Limb Small blob-like feature precedes a bright and ragged loop front. It fades throughout C3. Gusty outflow on ENE. 00:30 UT W Limb Slow development of a faint and asymmetric loop front. It fades throughout C3. 11:30 UT WS West Very faint front. Difficult to give an exact time of first appearance. It fades thorughout C3. 21:26 UT N Pole Very faint and diffuse wide front. It develops as a system of wide and expanding loop fronts, the subsequent expanding fronts mainly appearing above the NNE limb until around 05:26 UT on 07/07. The event is first seen in C3 at 01:42 UT (on 07/07) above the NNE limb. By 09:42 UT, the whole event spans in C3 ~ 200 deg (from PA 275 - 115, though the limit on W is not well defined). The mean plane- of-sky speed of the LE at PA 028 was ~ 275 km/sec (based on C3 data). GOES reported multiple C-class (impulsive) X-ray activity on NOAA AR 10786 all along 07/06. In particular, after 17:00 UT we have: - a C5.9 (N09E14) peaking at 17:49 UT, - a C1.4 (N10E14) peaking at 18:46 UT, - a C1.0 (N10E12) peaking at 20:22 UT, and - a C1.0 (N09E12) peaking at 21:24 UT. EIT 195 images show a relatively strong brightening on AR 10786 at 17:48 UT, and some minor brightenings later that roughly match the time of the X-ray spikes. Some time after the brightening at 17:48 UT (i.e., starting at ~ 19:48 UT), a slight dimming region can be seen developing rather far to the ESE of AR 10786. In summary, the event has therefore been determined as a Partial Halo Event. However, despite the frontsided activity observed, I don't find it conclusive to catalog the LASCO event as frontsided. Therefore, there exist the possibility that the event may have been backsided.
04:06 UT EN East Slow development of a system of loops along streamer. The event superposes in the LOS with the Partial Halo under development reported to start at 21:26 UT on previous day. 12:06 UT E Limb Very faint and diffuse loop front. Time of the last C2 image analyzed: 12:30 UT.