13:31 UT S Pole Very faint loop front. 16:30 UT W Limb Partial Halo Event associated to filament eruption on NW quadrant. Likely signatures of the event were first seen in C2 at 16:30 UT on the W Limb, developing as a relatively bright loop front with faint and diffuse extensions to N. By 18:06 UT, a faint, diffuse, and ragged loop front develops toward SW, spanning all the way from the W limb up to past the S Pole, apparently disturbing the southern leg of the loop first mentioned. The loop front is first seen in C3 above at 18:18 UT just appearing above the W Limb. Clear signatures of the second front can be seen above the SW limb by 20:18 UT. By this time, it becomes difficult to disentangle both features. The whole event spans ~ 190 deg (from PA 155 - 345) in the C3 FOV at 23:42 UT. The mean plane-of-sky speed of the outermost edge of the event at PA 261 was ~ 314 km/sec, showing a slight acceleration. GOES recorded multiple B-class X-ray flares during the day, all from NOAA AR 10822 in addition to a C5.9 X-ray flare at S07E36 (AR 10822) between 11:41 - 12:48 UT with peak emission at 12:13 UT. EIT 195 images show a brightening on AR 10822 peaking at 12:12 UT. No dimming can be discerned. There is then a gradual brightening on the same AR starting at around 14:24 UT and peaking at 14:36 UT, not correlated with any peak in X-rays. This second brightening seems to happen a little bit after the beginning of the eruption of an apparently small filament located close to the equator in the NW quadrant (eruption that is then seen developing mainly toward W). A dimming region develops to the NE and W of the original filament location. It is the filament eruption (which apparently started at around 13:48 UT) the most likely EIT counterpart of the LASCO event. The event has therefore been determined as a Partial Halo Event, frontsided, most likely associated with a filament eruption.
02:30 UT S West Small and elongated loop front that quickly fades. 06:30 UT E Limb Fan-like front. Last C2 image available by the time of writing: 09:06 UT.