Dear RHESSI Collaborators,
The level of solar activity is low. Yesterday's target region (NOAA 11817) was responsible for low C-class activity since the previous message (the largest event being a C2.9 flare on 15-Aug-2013 at 22:16 UT). The region still shows slight evidence for a gamma magnetic configuration. On the other hand, NOAA 11818 has formed a delta spot; the leading positive spot has joined with a small negative spot that emerged in the intermediate portion of the AR. NOAA 11818 also exhibits a strong polarity separation line and shows evidence of shearing. So far NOAA 11818 was responsible for a series of C-class events (the largest of which was a C2.6 on 16-Aug-2013 at 13:18 UT. Further C-class activity is expected with a chance of an isolated low M-class event.
The position of NOAA 11817 on 15-Aug-2013 at 18:00 UT is: S07W17, ( 276", -221" )
Paul Higgins (Trinity College Dublin/LMSAL)