Dear RHESSI Collaborators,
The level of solar activity is moderate. NOAA region 11818 has continued to emerge flux but remains mainly bipolar. The region was only responsible for B-class activity. On the other hand, yesterday's target region, NOAA 11817 has also continued to emerge further flux: two bipolar structures are currently emerging adjacent to each other in the trailing and intermediate portions of the region. This has caused a delta spot to form at its center. There is evidence for shearing along the region's strong horizontal polarity separation line. In addition to a number of C-class events, NOAA 11817 was responsible for an M1.5 flare on 12-Aug-2013 at 10:41 UT. If the negative portion of the delta spot continues to grow, large flares may be expected. At this time, further high C-class activity is expected with a chance for further M-class events.
The position of NOAA 11817 on 12-Aug-2013 at 17:30 UT is: S22E13, ( -191", -451" )
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 Higgins (Trinity College Dublin/LMSAL) Received on Mon Aug 12 2013 - 11:34:09 MDT