Dear RHESSI Collaborators,
Solar activity is at a low level. Yesterday's target (NOAA 11748) finally appears to have lost its delta configuration as there is evidence that the leading positive and negative umbrae no longer seem to be surrounded by a common penumbra. While there is some evidence for minor intermediate spot emergence and NOAA 11748 was responsible for the largest flare in the previous 24 hours (a C6.0 flare on 20-May-2013 at 16:26), the lack of a delta configuration, significant spot area, and more significant activity, means that the Major Flare Watch has ended. The new region rotating onto the disk (now designated as NOAA 11753), responsible for M-class activity yesterday (an M1.8 flare on 20-May-2013 at 05:25) has only produced C-class activity since and is currently classified as beta/Dso. A new region has been rapidly emerging over the previous 24 hours in the South-East quadrant. Due to the region's rapid emergence and proximity to NOAA 11754, the new region is designated as the target. B-class activity is expected and C-class activity is possible.
The position of the new region on 21-May-2013 at 17:00 UT is:
S20E62, ( -786", -311" )
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