EN East Much gusty ouflow in the form of small ragged fronts (aftermath of Partial Halo CME that started on previous day at 22:30 UT). 01:31 UT NN East Faint elongated and expanding (toward the N Pole) loop front. It fades throughout C3. 11:06 UT E Limb Ragged front just appearing above the E Limb. By 11:30 UT, the LE of the ragged front (now seen as a wide and ragged loop front) already reached the outer edge of C2. Faint extensions reach the W limb by 11:54 UT, the C2 occulting disk being fully covered by 12:43 UT (the signal is again extremely faint above the SW limb). The event is first seen in C3 at 11:18 UT, just appearing above the E Limb. By 11:42 UT faint extensions cover both the N and S poles. The C3 occulting disk is fully covered by 12:18 UT. The mean plane-of-sky speed of the LE at PA 068 was ~ 1590 km/sec. GOES reported extremely low X-ray activity during the day (A-class). Likewise, EIT 195 images did not show any significant activity on the disk. However, it did show signatures of an important backsided CME all above the E Limb starting at around 11:00 UT. In summary, the event has therefore been classified as an asymmetric full halo event, backsided. 15:00 - 17:00 UT No LASCO C2/C3 CME watch images. High Cadence C2 PBs subfield images for the Faraday Rotation Study with Cassini Campaign. 17:30 UT N East Faint elongated and expanding loop front already under development after gap. 21:54 UT E Limb Very bright ragged loop front. Faint and diffuse extensions to N and S. By 23:30 UT, faint extensions can be seen past the N Pole up to the W Limb. The extensions on the western hemisphere are barely visible in C3 and only close to its inner edge. The mean plane- of sky speed of the ragged LE at ~ PA 90 was about 1480 km/sec, showing practically no acceleration. GOES reported no significant X-ray activity on the disk during the day. Likewise, EIT 195 images do not show significant activity on the disk by the time of the event. However, it does show signatures of a backsided CME above the E Limb, starting at 21:36 UT.
03:54 UT EN East Jet-like front. 04:54 UT EN East Very bright and wide ragged loop front. Faint and diffuse extensions to N and S. As it happened with previous event, faint extensions can be seen past the N Pole up to the W Limb by 05:30 UT. An extremely weak signal can be seen on SW by 06:30 UT. Signatures of the event in the western hemisphere are practically non-discernible in C3. The mean plane-of sky speed of the ragged LE at ~ PA 85 was ~ 1290 km/sec, showing practically no acceleration. Again, EIT 195 images do not show significant activity on the disk by the time of the event. But it does show a backsided CME above the ENE limb starting by 04:24 UT. 09:30 UT E Limb Bright loop front just appearing develops as a very bright ragged and wide loop front with faint and diffuse extensions to N and S. By 09:54 UT, the LE on E is already past the outer edge of the C2 FOV. The brightest structure develops toward ESE. The event is first seen in C3 at 09:42 UT, just appearing above the E Limb. By 10:19 UT, faint extension surround the main structure, on S well past the S Pole. The angular extent of the event at 11:42 UT is about 230 deg (from PA 005 - 235), extremely faint on SW. Note that the last C3 image where the event can be seen is at 14:18 UT (there is afterward a gap between 15:00 - 17:00 UT due to the especial PBs images for the Faraday Rotation Study still under way). The mean plane-of-sky speed of the ragged LE at PA 082 was ~1800 km/sec (based on only the first 3 C3 frames were the event is seen, as the LE becomes then too faint and diffuse for accurate measurements). EIT 195 images do not show significant activity on the disk that could be related to the event by the time of the event. However, it does show signatures of an important (and still backsided) CME above the E Limb, first clearly seen at 09:24 UT. In summary, the event has therefore been classified as at least a Partial Halo event, backsided.