Dear RHESSI Collaborators,
Solar flare activity has increased in the past 24 hours. The target region NOAA 12415 was the source of 10 C-class flares (including a C9.5 at 09/17/02:52 UT) as well as an M1.1 event at 09/17/09:34 UT. 12415 is reclassified as a D-type/beta-gamma magnetic configuration with increasing in spot area and number of spots. It continues to display mixed polarities both in its intermediate and leading portions. Further C-class activity is expected, with a chance of additional low level M-class event in the next 24 hours.
The position of NOAA 12415 on September 17 at 12:30 UT is:
S20W09 (Solar X = 140", Solar Y = -436")
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,
Ying Li (Nanjing University / Montana State University)
mmmotd@solar.physics.montana.edu