Dear Collaborators,
Solar activity has been at a moderate level since the last message.
The target NOAA 14055 (N06W55) produced two ~M1 flares and
over ten C-class flares during the period, including the largest one
—an M1.1 at 16:40 UT yesterday. NOAA 14055 has developed into
a beta-gamma-delta configuration with increases in both spot area
and number. We shall continue to observe NOAA 14055 due to its
magnetic complexity and ongoing flux emergence. Further C-class
activity is expected, with a chance of additional low M-class flares
within the next 24 hours.
The position of NOAA 14055 on 12-Apr-2025 at 07:30 UT is:
N06W55 (781",155")
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)
Dear Collaborators,
Solar activity has slightly decreased since the last message.
The largest event in the period was a C4.4 flare at 07:03 UT
today from the target region NOAA 14055 (N08W43). This
region retains a beta-gamma configuration and produced
another two C-class flares in the period. NOAA 14055 is
undergoing significant magnetic flux emergence and shall
remain the target region. Further C‑class activity is expected,
with a good chance of low M‑class flares in the next 24 hours.
The position of NOAA 14055 on 11-Apr-2025 at 11:30 UT is:
N08W43 (648",204")
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)
Dear Collaborators,
Solar activity has been at a low-to-moderate level since the last message.
Yesterday’s target region, NOAA 14048 (S16W74), currently approaching
the southwest limb, was flare‑quiet during that period. NOAA 14055
(N08W29) produced four C-class flares in the period, including the largest
—a C9.0 flare at 17:22 UT yesterday. This region has developed into a
beta‑gamma configuration with increases in both its spot area and number.
Today, the target shall switch to NOAA 14055 due to its continued flux
emergence. Furthermore, the northeast limb region (N05E75), mentioned
in yesterday’s message, produced three C‑class flares, the largest being
a C5.3 at 07:41 UT today. Further C‑class activity is expected, with a
chance
of low M‑class flares in the next 24 hours.
The position of NOAA 14055 on 10-Apr-2025 at 11:30 UT is:
N08W29 (461",219")
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)
Dear Collaborators,
Solar activity has slightly increased since the last message.
The target region NOAA 14048 (beta-gamma/F-type) remained
the most flare-productive region on the disk, producing eight
low C-class flares and the largest magnitude event in the period
—an M1.6 flare at 22:08 UT yesterday. Today, NOAA 14048
shall remain the target region despite showing signs of decay.
Additionally, NOAA 14055 (N08W14, beta/C-type) and a northeast
limb region (N08E88) produced several low C-class flares during
the period. Further C-class activity is expected, with a chance of
additional low M-class flares within the following 24-48 hours.
The position of NOAA 14048 on 9-Apr-2025 at 11:30 UT is:
S16W61 (806",-216")
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)
Dear Collaborators,
Solar activity has been at a low level since the last message.
The largest event in the period was a C5.3 flare at 15:28 UT
yesterday from the target region NOAA 14048 (S16W44, beta-
gamma/F-type). 14048 was the most flare-productive region
on the disk and the source of five additional low C-class flares.
NOAA 14048 shall remain the target. Please note that a newly
emerged region NOAA 14057 (N07E50, alpha/A-type) also
produced a C3.0 flare today. Further C‑class activity is expected
with a chance of low M‑class flares in the next 24 hours.
The position of NOAA 14048 on 8-Apr-2025 at 07:30 UT is:
S16W44 (641",-192")
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)
Dear Collaborators,
Solar activity has slightly decreased since the last message. The largest
event was a C3.0 flare at 15:46 UT yesterday, attributed to NOAA 14045
(S13W64, beta/B-type). However, an occulted flare from the limb region
NOAA 14043 also contributed to the soft X‑ray flux. The target region
NOAA 14048 (S16W32) produced three low C‑class flares in the period,
the largest being a C2.7 at 06:41 UT today. NOAA 14048 retains a beta‑
gamma configuration, with magnetic flux emergence in its trailing portion.
Today, NOAA 14048 remains the target. Additionally, NOAA 14054
(S12W07), mentioned in yesterday's message, produced a C2.0 flare
during the period. This region has developed into a beta‑gamma
configuration and is undergoing significant magnetic flux emergence
in its intermediate portion. Further C‑class activity is expected, with
the possibility of low M‑class flares in the next 24 hours.
The position of NOAA 14048 on 7-Apr-2025 at 07:30 UT is:
S16W32 (489",-179")
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)
Dear Collaborators,
Solar activity has been at a low-to-moderate level since the last
message. The largest event during this period was an M1.0 flare
at 19:54 UT yesterday, attributed to target NOAA 14048 (S16W19).
However, a flare from NOAA 14046 (N06W39, alpha/H-type) also
contributed to the soft X-ray flux. 14048 retains a beta-gamma
configuration and produced four additional low C-class flares in
the period. Today, the target will remain with this region. NOAA
14043 has almost rotated beyond the west limb and produced
two C-class flares in the period, the largest being a C4.7. Please
note that a newly emerged region, NOAA 14054 (S13E06, beta/
C-type), is undergoing significant magnetic flux emergence.
Further C-class activity is expected, with a chance of additional
low M-class flares in the following 24 hours.
The position of NOAA 14048 on 6-Apr-2025 at 07:30 UT is:
S16W19 (301",-168")
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)
Dear Collaborators,
Solar activity has slightly increased since the last message. The largest
event during the period was a C5.7 flare at 23:24 UT yesterday, produced
by NOAA 14043 (N18W90) as it approaches the northwest limb. This
region also produced six low-C flares. The target region, NOAA 14048
(S16W09), retains a beta-gamma configuration with increases in both
spot area and number. It also produced a C4.8 flare and two additional
low C-class flares in the period. We will continue to observe NOAA 14048
due to its magnetic complexity and continued flux emergence in its
intermediate portion. Further C-class activity is expected, with a chance
of a low M-class flare in the next 24 hours.
The position of NOAA 14048 on 5-Apr-2025 at 11:30 UT is:
S16W09 (144",-163")
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)
Dear Collaborators,
Solar activity continues at a very low level. The largest event since
the last message was a C4.4 flare from a newly emerged region
(S23W29). The most flare-productive region during the period was
NOAA 14043 (N14W77, beta/D-type). This region, approaching the
West limb, produced six low C-class flares. The target region NOAA
14048 (S16E07) retains a beta-gamma configuration and produced
only a C1.8 flare during the period. At this time, we are ending the
Major Flare Watch but continuing to watch NOAA 14048 as the target
region, due to its magnetic complexity and continued flux emergence.
Further C-class activity is expected over the next 24 hours, with a
slight chance for an isolated M-class event.
The position of NOAA 14048 on 4-Apr-2025 at 11:30 UT is:
S16E07 (-112",-162")
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)
Dear Collaborators,
Solar activity has declined to a low level since the last message.
The largest event during the period was a C3.4 flare at 09:09 UT
today produced by NOAA 14045 (S14W11, alpha/A-type). The
target region, NOAA 14048 (S16E20), also produced four low
C-class flares during this period, the largest one being a C2.5
flare today. It has been downgraded to a beta-gamma/F-type
region and is showing a slight decrease in dynamic sunspot
behavior. Today, the Major Flare Watch will be extended for the
final 24 hours for NOAA 14048, due to its relatively large sunspot
area (470 uh) and flare history. Low M-class activity is possible,
with a slight chance of an isolated >M5 flare in the next 24 hours.
The position of NOAA 14048 on 3-Apr-2025 at 11:30 UT is:
S16E20 (-316",-166")
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)