Dear Collaborators,
Numerous low C-class flares were produced by various active
regions, two by the target NOAA 12911 (beta/C-type), one by
12907 (S19E09, beta-gamma/D-type), one by 12908 (S20E27,
beta-gamma/D-type), one by a limb region (S18E89), and five
by 12909 (S21E39, beta/D-type) including the largest one, a
C2.3 at 12/17/12:55 UT. 12911 retains its beta/C-type sunspot
group while increasing the sunspot area. More C-class activities
are expected with a slight chance of an M-class event in the
next 24 hours.
The position of NOAA 12911 on December 18 at 04:30 UT is:
N19E51 (-718", 331")
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 (Purple Mountain Observatory)
Dear Collaborators,
The largest event in the past 24 hours was an M1.2 flare
at 12/17/00:39 UT, produced by a newly emerged region
NOAA 12911 which has a beta/C-type configuration. 12911
also produced about seven C-class flares during the period.
Today the target will switch to this region. Yesterday's target
NOAA 12907 retains its beta-gamma/D-type configuration
but only produced several B-class flares. More C-class flares
are expected from the target region 12911 and other regions
(12907-12909), with a chance of an additional M-class flare
in the next few days.
The position of NOAA 12911 on December 17 at 04:30 UT is:
N19E67 (-849", 325")
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 (Purple Mountain Observatory)
Dear Collaborators,
The target region NOAA 12907 was the source of about ten
C-class flares in the past 24 hours, with the largest one being
a C8.1 at 12/15/10:31 UT. 12907 retains its beta-gamma/D-type
configuration but increasing in the sunspot area and number
of spots. The newly emerged region as mentioned in the last
message has been numbered as NOAA 12908 (S21E55) and
12909 (S21E67) with a beta/D-type sunspot group, the latter of
which has produced a C1.3 flare. If possible, please include all
the three regions in your field of view. Further C-class activities
are expected with a chance of an M-class flare in the next few days.
The position of NOAA 12907 on December 16 at 04:30 UT is:
S21E36 (-536", -336")
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 (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has increased since the last message. The target
region NOAA 12907 was the source of more than ten C-class
flares (the largest one being a C6.0 flare at 12/14/23:44 UT).
12907 has been classified as a Beta-Gamma/D-type region.
NOAA 12906 (S29E21, beta/C-type) also produced a C1.6 flare
as well as a few B-class events. Note that there emerged a new
region with sunspots (around S20E70) near the target region.
If possible, please also include this new region in your field of view,
which shows a rapidly increased current helicity. More C-class
activities are expected with a chance of an M-class flare in the
next 24 hours.
The position of NOAA 12907 on December 15 at 04:30 UT is:
S21E46 (-656", -339")
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 (Purple Mountain Observatory)
Dear Collaborators,
The target region has been numbered as NOAA 12907 with
a beta/B-type configuration. It was the source of eight B-class
flares (the largest one being a B3.6 at 12/13/21:11 UT) in the
past 24 hours. There also emerged another new region, numbered
as NOAA 12906 (S29E38) today. Further B-class activities are
expected with a chance of C-class events in the next 24 hours.
The position of NOAA 12907 on December 14 at 00:30 UT is:
S21E60 (-800, -350")
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 (Purple Mountain Observatory)
Dear Collaborators,
The target region has produced a C1.3 flare at 12/12/21:09 UT and
also two B-class flares since the last message. It is still too close to
the limb to obtain its magnetic configuration. The region with sunspots
as mentioned in the last message has been numbered as NOAA 12905
with a beta/C-type configuration. This region seems to be decaying
without any notable flares occurring. Further B-class activities are
expected with a chance of additional C-class flare in the next 24 hours.
The approximate position of the target on December 13 at 04:30 UT is:
S21E75 (-850", -340")
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 (Purple Mountain Observatory)
Dear Collaborators,
The target limb region was the source of three B-class flares (the
largest one being a B6.6 at 12/12/05:40 UT) since the last message.
It is rotating onto the visible disk but still too close to the limb to obtain
its magnetic configuration. Note that some sunspots emerged in a new
region (S11E50) today, which should be numbered as NOAA 12905
tomorrow. Additional B-class activities are expected with a chance of
a C-class flare in the next 24 hours.
The approximate position of the target on December 12 at 12:30 UT is:
S20E82 (-890", -350")
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 (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been below the B-class level with the visible solar
disk remaining spotless. The target limb region was the source of
several A-class flares in the past 24 hours. The region is still beyond
the east limb. Further low activities are expected in the next 24 hours.
The approximate position of the target on December 11 at 04:30 UT is:
S24E89 (-900", -420")
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 (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at an extremely low level with the visible solar
disk devoid of sunspots. Yesterday's target region NOAA 12904 has
been flare quiet since the last message. Today the target will switch to
a region near the east limb, which produced a long-lasting A7.8 flare
at 12/09/22:47 UT. Some low activities are likely in the next 24 hours.
The approximate position of the target on December 10 at 04:30 UT is:
S25E89 (-900", -420")
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 (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at an extremely low level. The target region
NOAA 12904 was the source of two low A-class flares since the last
message. 12904 has lost its spots and decayed to a plage region.
No notable activities are expected in the next 24 hours.
The position of NOAA 12904 on December 9 at 00:30 UT is:
S26E02 (-30", -426")
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 (Purple Mountain Observatory)