Dear Collaborators,
Solar activity has returned to a moderate level, due to an M3.4
flare at 10:08 UT produced by NOAA 13967. This region has
undergone the emergence of additional negative magnetic fluxes
in its intermediated portion over the past 24 hours, with a beta/C-type
configuration. To the west of 13967, NOAA 13961 (S09W15,
beta-gamma-delta/F-type) has also grown in the spot counts and
area (to 800 μh) but only produced four C-class flares. Today we
shall end the Major Flare Watch campaign, and the default target
shall switch to NOAA 13967 because of its return to M-class flaring
and proximity to 13961. Besides, NOAAs 13964 (Yesterday’s target)
and 13968 near the west limb were the only sources of C-class flare.
Further C-class activity is expected, with a good chance of another
low-M flare in the following 24 hours.
The position of NOAA 13967 on 21-Jan-2025 at 12:30 UT is:
S17E19 (-304", -205")
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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has dropped to an intermediate level since the
last message. The largest event was a C8.2 flare at 16:58 UT
yesterday from NOAA 13959 (N18W25, beta/C-type). The target
region NOAA 13964 only produced four low-C flares in the period,
including the largest being a C4.9 flare at 14:05 UT yesterday.
This region has lost the delta configuration to be classified as
a beta-gamma/E-type sunspot group. Today the Major Flare
Watch will be extended for maybe the final 24 hours with 13964.
Note that NOAA 13961 (S09E01, beta-gamma-delta/E-type) with
a sunspot area of 780 μh, and NOAA 13968 (S19W78, beta/B-type)
also were the two sources of ~C5 flare. Further C-class activity is
expected, with a slight chance for an isolated >M5 flare in the
following 24 hours.
The position of NOAA 13964 on 20-Jan-2025 at 12:30 UT is:
N06W69 (906", 132")
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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at a moderate level. The largest event
since the last message was an isolated M2.4 flare at 03:28 UT
today produced by the target NOAA 13964. 13964 was also the
source of more than ten C-class flares in the period. It has been
designated as a beta-gamma-delta/D-type configuration but
decreasing the sunspot area and number of spots slightly as it
rotates to the west limb. Additional low M-class activity is probable
with some chance of an above M5 flare in the next 24-48 hours.
The position of NOAA 13964 on January 19 at 04:30 UT is:
N06W50 (744", 155")
See http://www.SolarMonitor.org <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 moderate-to-high level since the
last message. The largest event during the period was an M7.5
flare at 13:24 UT yesterday produced by NOAA 13964. 13964
was also the source of eight low M-class and more than nine
C-class flares. At this point we are implementing the Major Flare
Watch campaign with NOAA 13964 as the target region. This
region has been designated as a beta-gamma/D-type configuration.
Yesterday's target NOAA 13961 (S09E29) retains a beta-gamma/
E-type configuration and produced about five C-class flares. Further
low M-class flares are expected with a chance of another above
M5 flare in the next few days.
The position of NOAA 13964 on January 18 at 04:30 UT is:
N06W37 (585", 167")
See http://www.SolarMonitor.org <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 moderate level since the last
message. The largest event for the past 24 hours was an
M1.3 flare at 02:01 UT today produced by a newly emerged
region NOAA 13964 (N07W27). 13964 also produced eight
C-class flares and has been designated as a beta/D-type
configuration. The target region NOAA 13961 was the source
of an M1.1 flare (at 03:08 UT today) and two high C-class
flares. It retains a beta-gamma/E-type sunspot group. Today
we will continue to watch NOAA 13961. Additional low M-class
flares are probable from NOAA 13961 and 13964 in the next
24-hour period.
The position of NOAA 13961 on January 17 at 08:30 UT is:
S09E40 (-621", -90")
See http://www.SolarMonitor.org <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 a little bit. NOAA 13961 was the
source of about ten low C-class flares, being the most productive
region in the past 24 hours. This region has been designated
as a beta-gamma/E-type configuration with increasing the
sunspot area and number of spots. Today we will watch this region.
Yesterday's target NOAA 13962 (N17E63) was designated as a
beta-gamma-delta/E-type but has been flare quite. Please note
that NOAA 13963 (N24E01, beta/C-type) produced three C3 flares
during the period. Further C-class flares are expected in the next
24 hours.
The position of NOAA 13961 on January 16 at 08:30 UT is:
S09E53 (-771", -104")
See http://www.SolarMonitor.org <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 low level. The largest event
since the last message was a C6.2 flare at 15:15 UT yesterday
produced by a newly numbered limb region, NOAA 13962.
13962 also produced three ~C2 flares during the period. Due to
its activity history, 13962 will become today's target, though it
was only designated as an alpha/H-type configuration. Also note
that another region NOAA 13961 (S09E65, beta/D-type) was the
source of four low C-class flares. Additional C-class activities are
expected in the next 24-hour period.
The position of NOAA 13962 on January 15 at 08:30 UT is:
N17E77 (-909", 301")
See http://www.SolarMonitor.org <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 target region
NOAA 13947 was the source of five low C-class flares in
the past 24 hours, the largest one being a C3.4 at 01:46 UT
today. Some other regions including NOAA 13959 and an
east limb region also produced a few ~C2 flares. Today we
will continue to watch NOAA 13947 for a final 24 hours. It
was designated as a beta-delta/D-type configuration. Further
C-class activities are expected in the following 24 hours.
The position of NOAA 13947 on January 14 at 12:30 UT is:
N11W84 (952", 193")
See http://www.SolarMonitor.org <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 C8.1 at 02:05 UT today
produced by the target region NOAA 13947. 13947 retains
a beta-gamma/D-type configuration. Note that some other
regions including NOAA 13948, 13951, and 13959 produced
a few low C-class flares in the period. Today we will continue
to watch NOAA 13947 before it rotates over the west limb.
Further C-class activities are expected in the next 24 hours.
The position of NOAA 13947 on January 13 at 12:30 UT is:
N11W70 (900", 210")
See http://www.SolarMonitor.org <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 dropped to a very low level since the last message.
The largest event was a C1.8 flare yesterday at 20:19 UT from NOAA
13945 (S07W79). The target region NOAA 13947 (N13W56) produced
only a C1.7 flare yesterday. This region maintains a beta-gamma
configuration and shall remain the target. Additionally, a southeast
region (S06E64, unnumbered yet) produced two low C-class flares
(C1.5 and C1.7) in the period. Further C-class activity is expected,
with a slight possibility of an isolated low M-class flare in the next 24
hours.
The position of NOAA 13947 on 12-Jan-2025 at 08:30 UT is:
N13W56 (789",259")
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,
De-Chao Song (Purple Mountain Observatory)