Dear Collaborators,
Solar activity has remained at a low level since the last message.
A few low C-class flares occurred in the period, the largest being
a C1.4 flare at 13:20 UT today from an unnumbered region near
the southeast limb (S12E78), which produced two additional ~C1
flares during the period. Today, target will switch to this limb region.
Yesterday's target NOAA 14122 retains a beta/D-type configuration
but exhibited decay in sunspot size; it produced a C1.2 flare during
the period. Further low-level C-class flares are expected over the
next 24 hours.
The approximate position of the target region on 30-June-2025
at 11:30 UT is:
S12E78, (-903", -205")
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 since the last message.
The largest event was a C4.0 at 19:40 UT yesterday from a
newly-emerged active region NOAA 14126 (beta/C-type,
N07W34) which is composed of small pores. A C1.2 flare at
13:21 UT yesterday was produced by the target region NOAA
14122. This region has been stable in the magnetic complexity
of a beta/D-type, with a sustained increase in the sunspot size
to 140 ÎĽh. Today, the target region should remain with 14122,
considering its high spot maturity and large spot area on the
disk. Additional low-C flares are expected in the following 24
hours.
The position of NOAA 14122 on 29-June-2025 at 11:30 UT is
N13E08 (-128", 169")
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 consistent since the last message.
NOAA 14120 (beta/D-type, N07W57) produced the largest
magnitude flare - a C1.2 one at 13:21 UT yesterday, while
this region displayed visible magnetic signs of decay. The
target region, NOAA 14122, has been flare-quiet with a
beta/D-type sunspot group, but it has grown in the spot area
during the period. Today, NOAA 14122 shall continue as the
target. High-B activity is expected, with low-C flares likely in
the next 24-hour period.
The position of NOAA 14122 on 28-June-2025 at 11:30 UT is
N13E21 (-330", 174")
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 over the past 24 hours.
The largest event was a C1.9 flare at 02:49 UT today, produced
by NOAA 14122. This region also produced three ~C1 flares and
was the most productive region. It has been classified as a
beta/D-type magnetic configuration, with its spot area growing.
Yesterday’s target, NOAA 14117, has been flare-quiet in the period.
Today, the target region shall switch to NOAA 14122 from NOAA
14117. Additional low-C flares are expected in the coming 24 hours.
The position of NOAA 14122 on 27-June-2025 at 11:30 UT is
N13E34 (-515", 179")
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 stable since the last message.
The target region, NOAA 14117, produced one of the largest
events - a C1.4 flare at 08:31 UT today. 14117 has remained
stable in the classification as a beta/D-type, with the emergence
of mixed magnetic flux in its leading portion. Today, the target
region should continue as 14117. Note that a recently-emerged
active region, NOAA 14120 (beta-gamma/D-type, N06W28)
was the source of four ~C1 flares, including a C1.4 flare at
21:05 UT yesterday as well. More low-C flares are very likely
in the following 24 hours.
The position of NOAA 14117 on 26-June-2025 at 11:30 UT is
S14W38 (565", -258")
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 is low. The target region NOAA 14117
and NOAA 14118 (S12W11, beta/C-type) have produced four
low-C flares since the last message, including the largest flare
that was a C3.1 flare at 15:24 UT yesterday. This close pair of
regions experienced a further decay in the spot size and counts,
although 14117 retained a beta/D-type magnetic configuration.
Today, NOAA 14117 (with NOAA 14118 in the field of view) will
continue to be the target region for a further 24 hours. High-B
activity is expected, with more low-C flares probable in the next
24 hours.
The position of NOAA 14117 on 25-June-2025 at 07:30 UT is
S14W21 (329", -262")
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 for the past 24 hours.
The largest event was a C1.3 flare at 04:40 UT today between
the target region NOAA 14117 and NOAA 14118 (S12E01).
14117 was stable in classification as a beta/D-type and 14118
was classified as a beta-gamma/D-type sunspot group, both of
which exhibited magnetic signs of decay. Today, the target
region shall remain with 14117. Interested observers should also
include 14118 in their field of view if possible. More low-C flares
are probable in the following 24 hours.
The position of NOAA 14117 on 24-June-2025 at 11:30 UT is
S13W10 (160", -246")
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 since the last message.
The largest event was a C5.0 flare at 12:09 UT today from
NOAA 14114 (beta/E-type, N20W85). This region also
produced three low-C flares as it almost rotated beyond the
west limb. Four low-C flares came from NOAA 14118
(beta/D-type, S13E15), with its largest being a C2.0 flare at
04:56 UT today. The target region NOAA 14117 was flare-quiet
during the period, but it experienced negative magnetic flux
emergence around its leading portion. 14117 should continue
as the target region. If possible, please also include 14118 in
your field of view. Additional C-class flares are expected in the
next 24 hours.
The position of NOAA 14117 on 23-June-2025 at 11:30 UT is
S15E04 (-63", -277")
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 decrease to a low level. The largest
event since the last message was a C1.4 flare at 10:57 UT
today from NOAA 14117. This region retained a beta/D-type
magnetic configuration, with an increase in its sunspot area.
To the southeast of 14117, NOAA 14118 (S14E29) also displayed
visible magnetic flux emergence to become a beta/C-type
group. Yesterday’s target NOAA 14114 only produced a C1.3
flare. Today, we shall end the Major Flare Watch campaign,
and the default target shall switch to NOAA 14117 (with NOAA
14118 in the field of view). More C-class activity is expected
in the following 24 hours.
The position of NOAA 14117 on 22-June-2025 at 11:30 UT is
S15E16 (-252", -274")
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 moderate level. The largest
event since the last message was an M1.1 flare at 17:21 UT
yesterday from NOAA 14117 (S14E31, beta/D-type). Only five
high-B and low-C flares were produced by the target region
NOAA 14114. 14114 experienced a further decay in its leading
spots but remained a beta-gamma/E-type sunspot group. Today,
the Major Flare Watch will be extended for the final 24 hours
with NOAA 14114. Further C-class activity is probable, with a
slight chance for an isolated >M5 flare in the coming 24 hours.
The position of NOAA 14114 on 21-June-2025 at 11:30 UT is
N18W61 (786", 278")
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)