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)
Dear Collaborators,
Solar activity has been low since the last message. The visible side
of the solar disk looks stale in these couple of days. The largest
event during the period was an isolated C2.9 flare at 2:41 UT today
(10/24) from NOAA 14256 in the Southwest quadrant.
Yesterday's target, the plage region located at the North of NOAA
14267 continues to produce several low-C class flares in the past
24 hours. Today we will continue to observe this unnumbered plage
region, expecting additional low-C class events.
The position of the target on 24-October-2025 at 15:30 UT is:
N08E58 (-814", 92").
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 has reduced to a low level since the last message.
Several high-B to low-C class flares were reported from the region
rotated from the Northeast limb in the recent 24 hours, with the
largest being a C3.2 at 04:56 UT today(10/23). A single sunspot is
visible close to the equator on the East limb. However, the flare
activities are coming from a plage region located at the North of
the sunspot, which is likely to be the remnant of NOAA 14236 that
had grown to over 300 millionths in early October.
The target region, centered at NOAA 14262 has been flare-quiet
since the last message. Today, we will switch the target to the
plage region (unnumbered) from the Northeast limb, considering the
frequent flare history in the past 24 hours. Additional C class
events are expected.
The position of the target on 23-October-2025 at 15:30 UT is:
N05E74 (-925", 68").
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 has increased to a low-to-moderate level since the
last message. The largest event in the past 24 hours was a C4.7
flare at 01:07 UT today(10/22) from around the target region,
NOAA 14262. A number of flare activities are occurring in the region
including NOAA regions 14257, 14262 and 14259.
In the recent 12 hours, 4 low-to-mid C class flares are reported
from behind the East limb, but the sunspot responsible for these
events is not visible from us yet.
In the next 24 hours, we will continue to observe the most active
area on the disk, the region centered at NOAA 14262.
The position of the target in NOAA 14262 on 22-October-2025 at
15:30 UT is: S12E12 (-205", -299").
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)