Dear RHESSI Collaborators,
Solar activity is at a low level. The largest event in the previous 24 hours was a C6.3 flare on 19-May-2013 at 15:15, released by NOAA 11750. NOAA 11750 was the source of other C-class activity during the period, likely due new intermediate spot emergence that was simultaneously observed. However, the new spots are aligned with the main preceding and following spots, so no gamma configuration is visible. Yesterday's target (11748) has not produced any significant activity in the previous 24 hours. The region maintains its beta-gamma-delta configuration. The primary negative umbra within the delta spot has migrated closer to the dominating positive polarity umbra, producing a small but strong polarity separation line. Due to continued complex magnetic configuration and strengthening of the polarity separation line within the delta spot of NOAA 11748, the Major Flare Watch will continue for at least the following 24 hours.
The position of NOAA 11748 on 18-May-2013 at 17:15 UT is:
N12E01, ( -24", 232" )
See http://www.SolarMonitor.org for images and http://solar.physics.montana.edu/max_millennium/ops/observing.shtml for a description of the current Max Millennium Observing Plan.
Regards,
Paul A. Higgins (Trinity College Dublin / LMSAL)