Dear Collaborators,
Solar activity has reached an intermediate level since the last message.
The largest event during the period was an M1.2 flare at 22:07 UT
yesterday from the target region NOAA 14207. This region retains a
beta–gamma configuration and produced over ten additional C-class
flares, including a C9.6 flare. Today, we will continue to watch NOAA
14207. Additionally, two mid-C-class flares (C4.5 and C5.1) were
produced by the west limb (likely from NOAA 14199), accompanied
by a CME (see the SSW Latest Events entry
<https://www.lmsal.com/solarsoft/latest_events/#Double_Eruption_Double_CME_O…>).
Further C-class activity
is expected, with a chance of additional low-M-class flares in the
following 24–48 hours.
The position of NOAA 14207 on 7-Sep-2025 at 11:30 UT is:
N29W28 (392",366")
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 during the period was a C4.9 flare at 10:30 UT today
from the southwest limb (likely NOAA 14197, S18W91), which also
produced several additional low C-class flares. The target region,
NOAA 14207 (N29W10), has developed into a beta–gamma
configuration and produced a C4.5 flare together with four additional
low C-class flares in the period. This region continues to show new
magnetic flux emergence in its intermediate and trailing portions.
Today, NOAA 14207 will remain the default target. Further C-class
activity is expected, with a chance of low M-class flares in the next
24–48 hours.
The position of NOAA 14207 on 6-Sep-2025 at 11:30 UT is:
N29W10 (145",355")
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 increased to a moderate level since the last message.
The two largest events during the period were an M1.4 flare at 01:08 UT
today and an M1.0 flare at 13:36 UT yesterday, both from the target region
NOAA 14207 (N29E03, beta/F-type). This region continues to show signs
of flux emergence and will remain the target region. Further C-class
activity
is expected, with a chance of additional low M-class flares in the next
24–48
hours.
The position of NOAA 14207 on 5-Sep-2025 at 11:30 UT is:
N29E03 (-43",354")
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 further increased since the last message. The largest
event during the period was a C9.2 flare at 05:22 UT today from NOAA
14207 (N30E17, beta/F-type), which also produced five additional low
C-class flares. Today, the default target shall switch to this region due
to
its ongoing flux emergence. In addition, NOAA 14211 (S14E49, alpha/H-
type), 14199 (N04W58, beta/C-type), and yesterday’s target region NOAA
14197 (S18W72, beta/F-type) produced several more low C-class flares
during the period. Further C-class activity is expected, with a chance of
an isolated M-class flare in the next 24-48 hours.
The position of NOAA 14207 on 4-Sep-2025 at 11:30 UT is:
N30E17 (-241",374")
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 C6.1 flare at 14:39 UT yesterday from
NOAA 14199 (N04W43, beta/C-type). The target region, NOAA 14197
(S18W59), retains a beta–gamma/E-type configuration but has shown
decreases in sunspot area and number as it rotates toward the west limb.
14197 produced ten C-class flares during the period, including C4.2 and
C4.9 flares yesterday. Today, we will continue to watch this region.
Additional C-class activity is expected in the next 24 hours.
The position of NOAA 14197 on 3-Sep-2025 at 11:30 UT is:
S18W59 (776",-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,
De-Chao Song (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been low since the last message. The largest event
in the period was a C3.9 flare at 19:14 UT yesterday from the target
region NOAA 14197 (S18W45). This region retains a beta–gamma/E-
type configuration and produced several other low C-class flares during
the period. The default target shall remain with NOAA 14197 today.
Additionally, NOAA ARs 14207 (N30E45; beta/E-type), 14201 (S22W30;
alpha/H-type), 14191 (N11W89; beta/C-type), and 14199 (N04W29;
beta/C-type) were the sources of several C2–C3 flares over the past
24 hours. Additional C-class activity is expected in the next 24 hours.
The position of NOAA 14197 on 2-Sep-2025 at 11:30 UT is:
S18W45 (641",-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,
De-Chao Song (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has decreased to a moderate-to-low level. The largest
event since the last message was a C6.8 flare at 17:58 UT yesterday
from NOAA 14202 (S15W12, alpha/H-type). The target region, NOAA
14197 (S18W31), has decayed to a beta-gamma configuration yet
produced more than ten low C-class flares during the period, the
largest being C4.9 at 03:03 UT today. NOAA 14197 shall remain the
target region, due to its activity history and magnetic complexity. In
addition, a northeast region NOAA 14207 (N30E51, beta/E-type)
produced five low C-class flares in the period. Further C-class activity
is expected, with a chance of an isolated M-class flare in the next 24
hours.
The position of NOAA 14197 on 1-Sep-2025 at 11:30 UT is:
S18W31 (467",-389")
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 returned to a moderate level. The largest
event since the last message was an M2.8 flare at 19:11 UT
yesterday from NOAA 14204 (alpha/A-type, N03E06). Most
flares including an M1.3 at 14:00 UT yesterday and an M1.2
at 15:51 UT yesterday were produced by the target region
NOAA 14197. 14197 retained a beta-gamma-delta/E-type
sunspot group, although it showed signs of decay in spot
area to 700 ÎĽh. Today, the target shall remain at 14197.
Further C-class activity is expected, with additional low-M
flares possible in the following 24 hours.
The position of NOAA 14197 on 31-Aug-2025 at 11:30 UT is:
S18W17 (265", -400")
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 decreased to an intermediate level since the
last message. The target region, NOAA 14197, has been the
most productive and produced multiple ~C2-C5 flares, including
the largest being a C5.9 flare at 12:38 UT yesterday. This region
has grown in the magnetic complexity to a beta-gamma-delta/E-type
and the spot area to 740 ÎĽh. Today, the target shall remain with
14197. Further C-class activity is expected, with a chance for an
isolated M-class flare in the next 24 hours.
The position of NOAA 14197 on 30-Aug-2025 at 11:30 UT is:
S18W04 (63", -405")
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 reached a moderate level over the last 24
hours. Yesterday’s target NOAA 14203 (beta/D-type, N12W91)
produced four ~M1 flares, with the largest being an M1.5 flare
at 20:30 UT yesterday, but it has almost rotated beyond the
west limb. NOAA 14197 has become the most active region on
the disk during the period and produced an M1.1 flare at 14:11
UT yesterday. It retains a beta-gamma/E-type sunspot group,
with additional spots emerging. Today, the target shall switch
back to 14197 from 14203. Further C-class activity is expected,
with a chance for another low-M flare in the coming 24 hours.
The position of NOAA 14197 on 29-Aug-2025 at 11:30 UT is:
S17E09 (-142", -388")
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)