Dear Collaborators,
Solar activity continued to be low since the last message.
The largest event in the past 24 hours was a C5.1 flare at 00:02 UT
today(7/21) from NOAA 14143. This region is classified as a
beta-gamma/D-type and has slightly increased its area and sunspot
numbers from yesterday. The target region, NOAA 14136 produced a
C6.5 flare at 15:28 UT yesterday, but quieted down as it approached
the Northwest limb. Another notable source of flares was NOAA 14149
in the Northeast quadrant, having produced 2 low-C class flares in the
past 24 hours but also quieted during the recent 12 hours.
Today, we will observe NOAA 14143 as the default target, because of
its magnetic complexity and increased size. We will observe the
Northern part of its trailing (negative polarity) sunspot where the
C5.1 flare was from, expecting additional C class activities.
The position of the target in NOAA 14143 on 21-July-2025 at
15:00 UT is: N26W67 (782", 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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity remains at a low level. The largest event since the
last message was a C7.6 flare at 07:29 UT today produced by the
target region NOAA 14136. 14136 also produced another three
C-class flares (including a C6.5) during the period. It retains a beta-
gamma/D-type sunspot group with decreasing the sunspot area and
number of spots slightly. Today we will continue to watch this region.
If possible, places also include NOAA 14143 (N25W60) in your field
of view. 14143 has developed to a beta-gamma/D-type region and
was the source of five low C-class flares. Note that a newly numbered
region NOAA 14149 (N17E61, beta/D-type) was the source of three
low C-class flares. Additional C-class flares are expected from various
regions in the following 24 hours.
The position of NOAA 14136 on July 20 at 15:30 UT is:
N21W71 (834", 313")
See http://www.SolarMonitor.org <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,
Solar activity continues to be at a very low level. The largest event
since the last message was a C3.3 flare at 08:56 UT today produced
by a limb region NOAA 14135 (S08W85, alpha/A-type), which is rotating
over the west limb. The target region NOAA 14136 produced seven
~C2 flares during the period, the largest one being a C2.6 at 06:51 UT
today. 14136 has decayed to a beta-gamma/D-type configuration but
retains its sunspot area and number of spots. Today we will continue
to watch this region. Further C-class activities are expected in the next
24 hours.
The position of NOAA 14136 on July 19 at 11:30 UT is:
N21W57 (740", 298")
See http://www.SolarMonitor.org <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,
Solar activity remains at a low level. The largest event since
the last message was a C3.6 flare at 08:05 UT today produced
by NOAA 14136. 14136 has been designated as a beta-delta/
D-type region, increasing in the sunspot area and number of
spots. This region also produced eight ~C2 flares during the
period. Today the target will switch to this region. Yesterday's
target 14142 (N01E01, beta-gamma/D-type) has been flare
quiet after producing the C2.9 flare at 13:09 UT yesterday.
Additional C-class activities are expected in the following 24
hours.
The position of NOAA 14136 on July 18 at 11:30 UT is:
N21W44 (613", 286")
See http://www.SolarMonitor.org <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,
Solar activity remains at a low level. The largest event since
the last message was a C5.9 flare at 09:17 UT today produced
by NOAA 14136 (N19W35). 14136 has been designated as a
beta-gamma/C-type configuration, with increasing the sunspot
area significantly. This region also produced another two C1.3
flares today. The target region NOAA 14142 was the source of
eight ~C2 flares during the period. It remains a beta-gamma/
D-type sunspot group. Today we will continue to watch this region.
Additional C-class flares are expected from various regions
including NOAA 14142 and 14136 in the next 24-hour period.
The position of NOAA 14142 on July 17 at 11:30 UT is:
N01E14 (-229", -56")
See http://www.SolarMonitor.org <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,
Solar activity continues to be at a low level. The largest event
since the last message was a C5.0 flare at 03:51 UT today
produced by NOAA 14143 (N23W08). 14143 also produced four
~C1 flares and was designated as a beta/C-type region. Note
that another region NOAA 14142 produced five ~C2 flares during
the period and has been designated as a beta-gamma/D-type
region. It continues showing new magnetic flux emergence.
Today we will switch the target to this region. Yesterday's target
NOAA 14139 (N22W39) was flare quiet over the past 24 hours,
although it has a complex beta-delta/D-type configuration. Only
C-class flares are expected in the following 24 hours.
The position of NOAA 14142 on July 16 at 15:30 UT is:
N01E26 (-415", -50")
See http://www.SolarMonitor.org <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,
Solar activity continues to be at a low level. The largest event
since the last message was a C4.6 flare at 16:49 UT yesterday
produced by the limb target NOAA 14141. 14141 also produced
another four low C-class flares during the period. In addition,
NOAA 14140 (S15E25, beta/D-type) and 14142 (N02E43, beta/
C-type, just emerged yesterday) produced four ~C2 flares.
Considering that 14141 (S13W91) has been rotated over the
west limb, today the target will switch to NOAA 14139. 14139
emerged new magnetic fluxes in the past 24 hours and has
been designated as a beta-gamma/D-type region. It produced
a C1.1 flare today. If possible, please also include NOAA 14136
(N19W07) in the field of view, which has evolved to show a beta-
gamma/E-type configuration. Additional C-class activities are
expected from various regions in the next 24 hours.
The position of NOAA 14139 on July 15 at 11:30 UT is:
N21W22 (331", 276")
See http://www.SolarMonitor.org <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,
Solar activity has been at a low level since the last message.
The largest event during the period was a C8.9 flare at 21:44 UT
yesterday produced by yesterday's target NOAA 14140 (S15E37).
14140 has decayed to a beta/C-type region and been flare quiet
since the beginning of UT today. There was a newly emerged region,
now numbered as NOAA 14141, producing nine low C-class flares
(the largest one being a C3.2) today. We will switch the target to
NOAA 14141, which was designated as a beta/C-type configuration.
Although this region is rotating over the west limb, its loops can still
be seen above the limb. Further C-class flares are expected from
various regions in the next 24 hours.
The position of NOAA 14141 on July 14 at 15:30 UT is:
S13W85 (916", -217")
See http://www.SolarMonitor.org <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,
Solar activity is at a moderate-to-low level. The target region NOAA
14140 (S15E52, beta/D-type) remained the most flare-productive
region on the visible disk, producing over ten C-class flares, including
the largest event in the period—a C8.9 flare at 03:46 UT today. NOAA
14140 shall remain the target region. Notably, NOAA 14136 (N19E18,
beta-delta/D-type) also produced a C7.0 flare during the period. Further
C-class activity is expected, with a chance of low M-class flares in the
coming days.
The position of NOAA 14140 on 13-July-2025 at 15:30 UT is:
S15E52 (-720",-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 in the period was an M2.3 flare at 08:29 UT today,
produced by the target region, now designated as NOAA 14140 (S15E61,
beta/C-type). This region also produced two additional low M-class flares
(M1.4 and M1.6) and several C-class flares during the period. The target
will remain on this region today. Further C-class activity is expected,
with
a chance of additional low M-class flares in the next 24–48 hours.
The position of NOAA 14140 on 12-July-2025 at 19:30 UT is:
S15E61 (-798",-275")
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)