Dear Collaborators,
Solar activity is at a low level. The largest event since the last message
was an M1.0 flare at 01:46 UT today, produced by yesterday's target
region, NOAA 14246. This region also produced more than ten C-class
flares during the period and has almost passed beyond the west limb.
Today, the target shifts to NOAA 14248 (N07W73) given its recent flare
history. Further C-class activity is expected, with a slight chance of a
low
M-class flare in the next 24 hours.
The position of NOAA 14248 on 19-October-2025 at 11:30 UT is:
N07W73, (915",89")
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.
NOAA 14246 (N24W88) remains the most flare-productive region during
the period, producing several C-class flares and 10 ~M1 flares, including
the largest event, an M1.5 at 10:37 UT today. NOAA 14246 will remain
the target region until it fully rotates beyond the west limb. Note that
NOAA
14256 (S15E45, beta/C-type) also produced two ~M1 flares in the period.
C-class activity is expected, with a chance of additional low M-class
events
in the next 24 hours.
The position of NOAA 14246 on 18-October-2025 at 11:30 UT is:
N24W88, (879",386")
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 further since the last message. NOAA
14246 (N24W76) remains the most flare-productive region on the
visible disk, producing more than 20 C-class and six low M-class
flares during the period, including the largest event, an M1.5 at 01:15
UT today. We are ending the Major Flare Watch but will continue to
monitor NOAA 14246 as the target region. Additional C-class activity
is expected in the next 24 hours, with a chance of low M-class events.
The position of NOAA 14246 on 17-October-2025 at 11:30 UT is:
N24W76, (853",368")
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 slightly since the last message. NOAA
14246 (N22W63) remains in a beta-gamma-delta configuration and
is still the most flare-productive region on the visible disk. It produced
a number of C-class flares and four low-M-class flares during the
period, including the largest event, an M2.7 at 21:55 UT yesterday
(see the SSW Latest Events entry
<https://www.lmsal.com/solarsoft/latest_events/#AR_4246_Eruptive_M2.7_and_M2…>).
We are maintaining the Major
Flare Watch on 14246 for another 24 hours. Additional C-class and
low-M-class activity is expected, with a chance of a major flare (≥M5)
in the next 24 hours.
The position of NOAA 14246 on 16-October-2025 at 11:30 UT is:
N22W63, (796",318")
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 risen to a moderate-to-high level since the last
message. Target region NOAA 14246 (N22W50, beta-gamma-delta
/E-type) remains the most flare-productive area on the visible disk,
producing a dozen C-class and three low-to-mid M-class flares in the
period, including the largest event, an M4.8 at 03:49 UT today. At this
time we are implementing the Major Flare Watch on NOAA 14246.
Note that NOAA 14248 (N07W20, beta-gamma-delta/E-type) also
produced an M2.0 flare during the period. Additional low M-class
activity is expected, with a chance of a major flare above M5 in the
next 24 hours.
The position of NOAA 14246 on 15-October-2025 at 11:30 UT is:
N22W50, (685",300")
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 remains moderate. The largest event since the last
message was an M2.0 flare at 00:35 UT today from target region
NOAA 14246 (N22W37). This region has further developed into a
beta-gamma-delta configuration and has produced an additional
M1.3 flare and over 20 C-class flares during the period. NOAA
14246 will remain the target region for the next 24 hours. Please
note that NOAA 14248 (N07W06) has also increased its magnetic
complexity to a beta-gamma-delta configuration and produced two
low C-class flares in the period. Further C-class and low M-class
activity is expected.
The position of NOAA 14246 on 14-October-2025 at 11:30 UT is
N22W37, (538",285")
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 largest event was an M2.8 flare at 08:55 UT today from target region
NOAA 14246 (N24W23). This region has evolved to a beta-gamma
configuration and, during the period, produced an additional M1.9 flare,
two flares of approximately M1.0, and eight C-class flares. The target
remains NOAA 14246 today given its ongoing significant flux emergence.
NOAA 14248 (N06E08, beta-gamma/D-type) also produced six C-class
flares, including a C9.5 today. Further C-class activity is expected, with
additional low M-class events possible in the next 24–48 hours.
The position of NOAA 14246 on 13-October-2025 at 11:30 UT is
N24W23, (344",305")
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 slightly. Several flares were produced in the
last 24 hours, the largest being a C9.6 from NOAA 14246 at 13:18 UT today.
This region is currently classified as a beta type region and has shown
significant flux increase in the last 24 hours, the target region will now
switch to NOAA 14246. Further C-class activity is expected with a slight
chance for an isolated low M-class flare in the next 24 hours.
The position of NOAA 14248 on 12-October-2025 at 15:30 UT is
N22W12, (186", 267")
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,
Harry Greatorex (Queen's University Belfast)
Dear Collaborators,
Solar activity remains low. A small number of flares were produced in the
last 24 hours, the largest being a C1.8 from NOAA 14246 at 21:56 UT
yesterday. The bright region beyond the southeastern limb continues to
progress onto the disk, however no new active regions have been numbered
since the last message. Due to the substantial decay of NOAA 14249 and the
increase in complexity of NOAA 14248 to a beta-gamma type region, the
target region will switch to NOAA 14248. Further C-class activity is
expected.
The position of NOAA 14248 on 11-October-2025 at 11:30 UT is
N08E40, (-613", 55")
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,
Harry Greatorex (Queen's University Belfast)
Dear Collaborators,
Solar activity remains at a very low level. An occulted M2.0 was produced
at 12:11 UT today yesterday from over the northwestern limb attributed to
NOAA 12436. Part of the region surrounding the southeastern limb has now
been numbered as NOAA 14249, however there are additional regions still
beyond the limb. NOAA 14247 has shown signs of decay, in anticipation of
the development of the southeastern limb regions, NOAA 14249 will be the
new target region. Additional C-class activity is expected.
The position of NOAA 14249 on 10-October-2025 at 11:30 UT is
S18E57, (-767", -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,
Harry Greatorex (Queen's University Belfast)