Dear RHESSI Collaborators,
Solar activity is at a medium level. The new region that released the M-class event (an M1.8 flare on 20-May-2013 at 05:25) over the east limb, noted in the last message, has not produced further significant activity. The current target (NOAA 11748) has undergone new intermediate spot emergence, resulting in a more multipolar configuration. Also, the leading delta spot now appears more compact and sheared. Although there is no bright H-alpha plage surrounding the delta spot, the region has produced some high C-class activity; including the largest flare since the previous message (a C9.6 on 20-May-2013 at 15:06). Due to the new dynamics and activity within NOAA 11748, the Major Flare Watch will continue for at least the following 24 hours.
The position of NOAA 11748 on 20-May-2013 at 18:45 UT is:
N12W10, ( 167", 230" )
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)
mmmotd@solar.physics.montana.edu