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)
Dear Collaborators,
Solar activity has increased slightly since the last message. Yesterday's
target, NOAA 14136 (N19E42), retains a beta-gamma configuration but
has been flare-quiet during the period. The largest event was a C8.9
flare at 19:27 UT yesterday from the southeast limb region (S15E82)
mentioned in yesterday's message. This region also produced a C8.0
flare and over ten additional C-class flares in the period. Today, the
target
shall switch to this limb region. Further C-class activity is expected,
with
a chance of low M-class flares in the next 24–48 hours.
The approximate position of the target region on 11-July-2025
at 19:30 UT is:
S15E82 (-902",-252")
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 decreased further since the last message. The target
region has been designated NOAA 14136 (N19E55) with a beta-gamma
magnetic configuration. It produced only a C1.7 flare during the period.
Today, the target will remain on this region due to its activity history
and
magnetic complexity. Notably, an unnumbered southeast limb region
(S14E88) produced nine C-class flares, including the two largest of the
period, both reaching magnitude C4.3. Further C-class activity is expected,
with a chance of low M-class flares in the next 24–48 hours.
The position of NOAA 14136 on 10-July-2025 at 15:30 UT is:
N19E55 (-732",272")
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 decreased slightly since the last message.
The largest event since the last message was an M1.3 flare
at 04:10 UT today, produced by the limb target region (N20E78,
still unnumbered). The target will remain on this region. Further
M-class activity is possible over the following 24-48 hours.
The approximate position of the target region on 9-July-2025
at 11:30 UT is:
N20E78 (-868",310")
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)