Dear Collaborators,
Solar activity has been at a high level since the last message.
The largest event of the period was an M5.0 flare at 09:38 UT
on November 3, produced by the northeast limb region, now
numbered as NOAA 14274. This region also produced five low
M-class (including an M3.5 at 01:31 UT, still underway) and
more than ten C-class flares. At this time, we are implementing
the Major Flare Watch campaign on NOAA 14274, which has
been designated as a beta-gamma/E-type configuration. Additional
major flare of above M5.0 will be likely in the next few days.
The position of NOAA 14274 on November 4 at 00:30 UT is:
N24E63 (-800", 380")
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 level of solar activity has increased slightly. An unnumbered
region (N04E89) behind the limb produced the largest event, a
partially occulted M1.1 flare at 00:13 UT today. To the north of this
region, the target region has been numbered as NOAA 14272 and
has been classified as an alpha/H-type sunspot group since the
last message. It produced four low-C flares, including a C4.5 at
10:56 UT today. Today, the target shall remain at 14272, because
of its high productivity. Further C-class activity is expected in the
coming 24 hours.
The position of NOAA 14272 on 2-Nov-2025 at 12:30 UT is:
N22E69 (-838", 337")
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 increased to an intermediate level, due to
a C7.1 flare at 19:37 UT yesterday, produced by the target
region. This region (unnumbered yet) was also the source of
four low-C flares and became the most productive region.
Today, the target shall continue as this limb region. More
low-C activity is expected, with a chance for another high-C
flare in the following 24 hours.
The approximate position of the target on 1-Nov-2025 at 12:30 UT is:
N23E88 (-878", 415")
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,
The level of solar activity remains low since the last message.
The largest event was a partially occulted C1.8 flare at 01:44 UT
today from an unnumbered region behind the northeast limb.
This region also produced two B6 flares. This eastern limb
region becomes the new target. Yesterday’s target has almost
rotated out of Earth-view. Additional low-C flares are very likely
in the following 24 hours.
The approximate position of the target on 31-Oct-2025 at 08:30 UT is:
N24E88 (-880", 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 remains at a low level. The largest event since
the last message was a C1.4 flare at 11:59 UT today, produced
by a spotless region near the southwest limb. This region also
produced a B6.4 flare. Today, the target will switch to this limb
region, due to its return to C-class flaring. Yesterday’s target,
NOAA 14266 (beta/C-type, N17W46), became quiescent during
the period. Further B-class activity is expected, with a chance
for another low-C flare in the next 24 hours.
The approximate position of the target on 30-Oct-2025 at 12:30 UT is:
S09W88 (950", -150")
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 continued at a low level. The target NOAA
14266 produced a B9.1 flare at 05:05 UT today. This region
has grown in its magnetic complexity to a beta/C-type, exhibiting
the emergence of new spots in its following portion. Today, the
target shall remain with NOAA 14266. In addition, NOAA 14267
(beta/C-type, N04W04) also produced a C1.6 flare at 16:17 UT
yesterday, while a region behind the southwest limb was the
source of four high-B flares. Further B-class activity is expected,
with a chance for another low-C flare in the following 24 hours.
The position of NOAA 14266 on 29-Oct-2025 at 12:30 UT is:
N16W32 (493", 202")
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 a very low level since the last
message. NOAA 14266 produced the largest event, a B7.3
flare at 05:38 UT today. This region has been downgraded to
a beta/B-type, with its leading portion fragmenting somewhat.
Today, the target shall switch to NOAA 14266. Yesterday’s target
NOAA 14262 (beta/C-type, S13W66) has been flare-quiet in
the period. Further B-class activity is expected in the coming
24 hours.
The position of NOAA 14266 on 28-Oct-2025 at 08:30 UT is:
N16W16 (256", 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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has remained at a low level. The largest event
since the last message was a C1.8 flare at 10:03 UT today
from NOAA 14262. This region also produced a C1.0 flare and
retains a beta/C-type sunspot group. NOAA 14256 (yesterday’s
target) and NOAA 14266 (beta/D-type, N16W04) only produced
a B7.9 flare and a B9.2 flare, respectively. Today, the target will
switch to NOAA 14262 due to its return to C-class flaring.
Additional low-C activity is possible in the next 24 hours.
The position of NOAA 14262 on 27-Oct-2025 at 08:30 UT is:
S12W53 (755", -248")
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 continues to be very low since the last message.
Five high-B to low-C events were reported in the recent 24 hours,
with the largest being a C2.2 flare at 22:58 UT yesterday (10/25).
However, others were from NOAA 14256 approaching the Southwest limb.
This region had become spotless for the past few days, but has
undergone new flux emergence since yesterday to show a few small
sunspots. Today, we will switch the target to NOAA 14256, expecting
additional C class events.
The position of the target in NOAA 14256 on 26-October-2025 at
15:00 UT is: S20W61 (800", -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,
Aki Takeda (Montana State University)
Dear Collaborators,
Solar activity continues to be very low since the last message.
Several high-B to low-C class events were reported in the last 24
hours. The largest was a C1.6 event at 10:13 UT today from the
Northern edge of NOAA 14267. Others are from the target region
(a plage in the North of 14267) and NOAA 14256, both having
produced 2 flares.
In the next 24 hours, we will continue to observe the plage region
extending in the North of NOAA 14267, considering the brightness
and the size in the EUV wavelength.
The position of the target on 25-October-2025 at 15:30 UT is:
N07E44 (-671", 59").
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,
Aki Takeda (Montana State University)