Dear Collaborators,
Solar activity continues at a very low level. The target region
NOAA 13831 was the source of three low C-class flares (all
flares during the period recorded by GOES), with the largest
one being a C4.5 at 20:37 UT on September 21. 13831 retains
a beta/D-type configuration. Further C-class activities are
expected in the next 24 hours.
The position of NOAA 13831 on September 22 at 11:30 UT is:
N12W30 (469", 98")
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 continues at a very low level. The largest event
during the period was a C3.1 flare produced by NOAA 13831.
13831 also produced a C1.7 flare. Today the target will switch
to 13831 that has developed to a beta/D-type region. Note that
another region of NOAA 13834 also produced two low C-class
flares. Yesterday's target NOAA 13825 has been flare quiet since
the last message. Additional C-class flares are expected in the
next 24 hours.
The position of NOAA 13831 on September 21 at 07:30 UT is:
N12W13 (211", 85")
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 continues at a very low level. The largest event
since the last message was a C2.6 flare at 15:17 UT on
September 19 produced by the target region NOAA 13825.
13825 retains a beta-gamma-delta/E-type configuration but
increases in the spot area and number of spots. Please note
that another region NOAA 13824 (S04W85, beta/E-type) was
the source of five C1/C2 flares in the period, which is rotating
over the west limb. Only C-class activities are expected in the
next 24 hours.
The position of NOAA 13825 on September 20 at 03:30 UT is:
S16W23 (360", -367")
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 was at a very low level. The largest events
since the last message were two C3.0 flares produced by
the target region NOAA 13825 and NOAA 13824 (S04W73,
beta-gamma/E-type). The target 13825 has been designated
as a beta-gamma-delta/E-type region, which shows some flux
emergence in its leading portion. C-class activities are expected
with some chance of an isolated low M-class flare in the next
24-hour period.
The position of NOAA 13825 on September 19 at 07:30 UT is:
S15W11 (176", -358")
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 continues at a very low level. The largest event
in the past 24 hours was a C4.1 flare at 09/18/03:33 UT produced
by NOAA 13828 (S13E57, alpha/H-type). 13828 also produced
another two low C-class flares. The target region NOAA 13825
was the source of two low C-class flares (C2.4 and C1.6) in the
period, which retains a beta-gamma/E-type configuration. At this
time, we are ending the Major Flare Watch campaign. Further
C-class activities are expected with a small chance of an M-class
flare in the next 24 hours.
The position of NOAA 13825 on September 18 at 07:30 UT is:
S15E02 (-32", -361")
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 continues at a low level. The largest event
since the last message was a C9.6 flare at 09/16/23:29 UT
produced by the target region NOAA 13825. 13825 retains
a beta-gamma/E-type configuration but increases the sunspot
area and number of spots slightly. New magnetic flux is
emerging again especially in the leading portion of sunspots.
Today we will continue the Major Flare Watch campaign on
this region for one more day. Low M-class activity is likely
with some chance of a flare above M5 in the next 24 hours.
The position of NOAA 13825 on September 17 at 07:30 UT is:
S16E16 (-253", -372")
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 a low level since the last message.
The largest event during the period was a C6.0 flare at 01:21 UT
today produced by NOAA 13824 (S04W35, beta-gamma/C-type).
The target region NOAA 13825 only produced four C-class flares
with the largest one being a C5.0 at 13:30 UT today. 13825 has
been designated as a beta-gamma/E-type region with decreasing
the sunspot area and number of spots significantly. The Major Flare
Watch campaign will continue for a further 24 hours. C-class activities
are expected with a small chance of a major flare in the next 24 hours.
The position of NOAA 13825 on September 16 at 15:30 UT is:
S15E26 (-405", -349")
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 Major Flare Watch target NOAA 13825 was the source of
an X4.5 flare at 15:13 UT on September 14 and seven C-class
flares. It has been designated as a beta-gamma-delta/D-type
configuration with increasing the number of spots significantly.
Today the Major Flare Watch campaign continues on this region.
Low M-class activities are expected with a chance of a major
flare in the next few days.
The position of NOAA 13825 on September 15 at 15:30 UT is:
S18E39 (-572", -381")
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 was at a moderate level in the past 24 hours.
The target region has been designated as NOAA 13825 with
a beta-gamma/D-type sunspot group. 13825 was the source
of three M-class flares, with the largest one being an M3.0
at 07:26 UT today, and three C-class flares including a C9.4.
Today we will continue the Major Flare Watch on this region.
It is still emerging some new spots. Low M-class activities are
expected with some chance of a major (>M5.0) flare in the
next few days.
The position of NOAA 13825 on September 14 at 07:30 UT is:
S18E59 (-778", -351")
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 continues to be at a high level. There were two major
flares, an M6.9 at 09/12/14:31 UT and an M5.3 at 09/13/06:38 UT,
produced by the west limb region NOAA 13811 (S13W91, beta-gamma/
D-type). This region was also the source of two low M-class flares
and five C-class flares in the period. Considering that 13811 is almost
rotating over the west limb, we still keep the Major Flare campaign
on the southeast unnumbered region. It produced two low M-class
flares, an M1.6 and an M2.1 after yesterday's X1.3 flare. This region
has rotated onto the visible disk and seems to have a complex magnetic
configuration. Low M-class flares are expected from the two regions
as mentioned, with a chance of a >M5 flare in the next 24 hours.
The approximate position of the target on September 13 at 07:30 UT is:
S17E80 (-890", -280")
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)