Dear Collaborators,
Solar activity has remained at an intermediate level since the
last message. Six C-class flares were produced by the target
region NOAA 14325, with the largest magnitude being a C6.0
at 01:23 UT today. 14325 has developed a weak delta configuration
and been designated as a beta-gamma-delta/E-type in the period.
Today, the target shall remain at NOAA 14325. Further C-class
activity is expected, with a good chance for an isolated M-class
flare in the coming days.
The position of NOAA 14325 on 31-Dec-2025 06:30 UT is:
S08E14 (-234", -88")
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 an intermediate level in the past
24 hours. NOAA 14324 (beta/gamma-D-type, N25E30) produced
six C-class flares, including the largest being a C6.5 at 20:36 UT
yesterday. The target region NOAA 14325 was the source of a
C5.1 flare at 06:38 UT today and four low-C ones. 14325 has
increased in its magnetic complexity to be classified as a
beta/gamma-D-type. Today NOAA 14325 should continue as the
target region. Further C-class activity is expected, with a chance
for an isolated low-M flare in the following 24 hours.
The position of NOAA 14325 on 30-Dec-2025 12:30 UT is:
S09E24 (-393", -109")
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 moderate level since the last
message. The largest event was an M4.2 flare at 22:01 UT
yesterday from NOAA 14317 (beta/D-type, N12W41). Most
flares were produced by the target region NOAA 14325,
including two ~M1 and nine C-class flares. 14325 retained a
beta/D-type sunspot group and continued to show the
emergence of new magnetic fluxes in its intermediate portion,
with a separation between the leading and following portions.
Today, the default target shall remain with NOAA 14325. In
addition, NOAA 14324 (beta/gamma-D-type N25E44) also
produced an M2.2 flare in the period. Further C-class activity
is expected, with a good chance for low-M flares from various
regions in the next 24 hours.
The position of NOAA 14325 on 29-Dec-2025 12:30 UT is:
S09E37 (-581", -116")
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 been at a low-to-moderate level since the last
message. More than 10 C class flares were reported from multiple
regions. The largest event was a C9.9 flare at 22:14 UT yesterday
(12/27) from a filament that persists for several days at the South
of NOAA 14317.
The target region, the bipolar spots emerged after the M5.1 event
yesterday, was assigned a new number, NOAA 14325. This region
is adding a number of sunspots at the central area, having produced
a few low-to-mid C class flares in the past 24 hours. NOAA 14324
from the Northeast limb also produced a few low-to-mid C class
flares today.
Today our target will continue to be on NOAA 14325, expecting
additional C class events. However, the same level of activity is
expected from NOAA 14324, either.
The position of the target in NOAA 14325 on 28-December-2025 at
17:00 UT is: S09E49 (-729", -125").
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 since the last message, mainly due to
the activities from the regions rotated from the East. An M5.1 flare
was reported at 01:38 UT today (12/27) from the target region, now
registered as NOAA 14323. After this event, bipolar spots emerged
from the flared site and currently they appear to become a little
settled.
The region rotated from the Northeast limb, which was assigned a
number NOAA 14324, started to produce several low-to-mid C class
flares starting today. This region appears to be a well-developed
region with a size of 120 millionths, currently classified as
a beta type. The flares are from the area of following (negative)
polarity.
In the next 24 hours, we will continue to observe NOAA 14323,
at the site of M5.1 flare, as the default target, expecting
additional C to M class events. Attention should also be paid
to NOAA 14324 as the source of frequent C class flares.
The position of the target on 27-December-2025 at 17:00 UT is:
S09E63 (-861", -145").
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 slightly increased since the last message, as the
bright regions rotated from the East limb. In the past 24 hours, One
low-C class flare was reported from the region on the Northeast limb,
and the region on the Southeast limb produced several C class flares
including a C6.9 flare, which is the largest in the reporting period.
No flare was reported from the target region, NOAA 14317 during the
last 24 hours. The rapidly grown region, NOAA 14321 has reached to
the size of 200 millionths, and is forming a delta configuration at the
boundary of its leading and following sunspots. However, no flare was
reported from this region, either.
Today, we will switch the default target to the yet unnumbered region
from the Southeast limb. While no sunspot is visible from us yet,
we will observe the positive magnetic concentration that produced
the C6.9 event. Additional C class events or larger are expected.
The position of the target on 26-December-2025 at 16:00 UT is:
S09E78 (-943", -148")
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 remains very low since the last message. The largest
in the past 24 hours was a C2.8 event produced by a series of loop
brightenings at NOAA 14317 peaked at 20:13 UT yesterday (12/24).
NOAA 14317 also produced a C2.7 flare at 23:04 UT.
A rapid growing region reported yesterday in the East of NOAA 14316,
was assigned a number NOAA 14321. This region produced only a C2.3
flare in the period.
Today, we will continue to observe NOAA 14317, at the small filament
located in the South of the following sunspot, which repeats brightening
these few days. Additional C class events are expected.
The position of the target in NOAA 14317 on 25-December-2025
at 17:00 UT is: N07E15 (-261", 171").
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.
Happy holidays!
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity has been very low since the last message. The largest
event in the past 24 hours was a C4.9 flare at 10:07 UT today (12/24)
produced by the target region, NOAA 14317. Two other low-C class
flares were reported from this region today. A new bi-polar region
emerged in the East of NOAA 14316. This unnumbered region has
grown fast since yesterday, now having a larger sunspot area than
that of NOAA 14316. A C1.3 event was reported from this region, but
no further activity has been observed yet.
Today, we will continue to observe NOAA 14317, at the central area
where the C4.9 flare was from, expecting additional C class events.
The position of the target in NOAA 14317 on 24-December-2025
at 17:00 UT is: N10E25 (-414", 213").
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.
Happy holidays!
Aki Takeda (Montana State University)
Dear Collaborators,
Solar activity has been low since the last message. The largest event
in the past 24 hours was a C8.6 flare at 22:21 UT yesterday (12/22)
produced by the target region, NOAA 14317, which also produced 3
low-C class flares during the period. All these events were started
from the South side of its following (negative polarity) sunspot.
Today, we will continue to observe NOAA 14317, but the target area
will shift eastward to the following sunspot, expecting additional
C class events.
The position of the target in NOAA 14317 on 23-December-2025
at 17:00 UT is: N10E41 (-637", 197").
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 had increased slightly since the last message, but has
returned to a low level for the recent several hours. The main source
of activity was NOAA 14316, which produced an M1.3 flare at 18:12
UT yesterday (12/21) and more than 10 low-to-mid C class flares.
This region underwent new flux emergence at in the West vicinity of
leading sunspot but appears to hit lull now.
Yesterday's target, NOAA 14317 had been flare-quiet during a series
of flares by NOAA 14316, but started to produce a few low-C class
flares today from the Eastern side of the main leading sunspot. It is
also notable that a new sunspot pair has emerged in the Southeast
of this leading sunspot. Today we will continue to observe NOAA 14317
at the Eastern side of the leading sunspot, expecting additional
C class events.
The position of the target in NOAA 14317 on 22-December-2025
at 17:00 UT is: N10E50 (-737", 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,
Aki Takeda (Montana State University)
--