00:06 UT N East Ragged front along streamer. Barely visible in C3. 03:30 UT S West Slow development of a system of loops along the s treamer. 04:06 UT N West Faint spray-like front. LASCO/EIT observed a major proton event most likely associated to an X7.9(GOES10)/7.1(GOES12) X-ray flare that started at 06:36 UT and peaked at 07:01 UT. Signatures of a full halo CME can be guessed in the highly degraded LASCO data. Here comes the report: 06:54 UT N west Extremely bright loop front above the WNW-NW limb. An intense proton storm starts affecting by that time the LASCO images. The next C2 frame (07:34 UT) shows up 100 % contaminated and therefore practically useless. The same occurs with the following frames (at least up to the time of the last C2 frame at hand, i.e., 16:00 UT. The proton event is first seen in C3 at 07:54 UT, hiding any potential CME signatures that could be present. The next frame allows to guess a ragged loop front all above the SE Limb. By 10:24 UT the C3 occulting disk seems to be completely covered. If, the LE is what I guess it is, the mean plane-of- sky speed of that front at PA 141 would be around 571 km/sec (based on C3 data). However, given the projected development of this guessed halo (apparently mainly toward SE), it is difficult to be sure about its association with the X7 X-ray event. Maybe there is a front already farther out on NW, but the degradation of the data prevents telling anything. GOES(10) reported an X7.1 X-ray flare on NOAA AR 10720 (N14W61) between 06:36 - 07:26 UT with peak emission at 07:01 UT. EIT 195 images show between 06:36 - 06:48 UT a well-defined loop eruption toward NW above the AR 10720, clearly under way before the X7 flare. At 06:48 UT a strong brightening starts to be seen on the aforementioned AR, peaking in the frame at 07:14 UT. Many particle hits by that time. Maximum particle counts occur by 07:27 UT. Given the data degradation due to the particle hits nothing can be said about potential dimming/wave associated to the event. It is difficult to be sure that the 'halo' guessed in C3 is really a halo or if it is really associated with the big event. However, due to the location of the source region of the event on the disk, is likely that the associated CME can at least be partly directed toward Earth. LASCO Data strongly degraded after proton event, all along the day. Some small and/or faint events maybe missing. 09:31 UT N East Elongated loop front. 17:06 UT N West Very elongated loop front. Apparently, some faint ragged fronts follow. GOES reported a C8.0 X-ray flare from NOAA AR 10720 (N19W64) between 16:08 - 16:19 UT with peak emission at 16:14 UT. EIT observes a compact event between 16:22 - 16:35 UT on NE of the AR, possible wave to NNE, narrow CME off-limb. Couple oc C-class flares follow (peak emission at 18:16 UT and 21:53 UT).
LASCO Data still strongly degraded by proton event, though gradually subsiding. Some small and/or faint events maybe missing. 04:58 UT WN West Bright and elongated loop front. EIT 195 observes a compact brightening to NE of the AR 10720, eruption of a compact loop, and opening of larger, off-limb structures between 04:31 - 05:26 UT. GOES reported a C6.3 X-ray flare from NOAA AR 10720 (N19W69) between 04:17 - 04:34 UT with peak emission at 04:27 UT. Couple of C1-class X-ray flares more peaking at 06:36 and 06:46 UT on AR 10720. 07:23 UT S East Elongated and very narrow diffuse loop-like structure that fades close to the inner edge of C3. 10:58 UT WN West Another bright and elongated loop front (narrower than the previous one). GOES reported an M1.7 X-ray flare from NOAA AR 10720 (N19W81) between 10:10 - 10:19 UT with peak emission at 10:16 UT.