Dear Collaborators,
Solar activity is at a moderate level. Target region NOAA 13376
remains designated as a beta/D-type sunspot group, but has now
rotated up to the North West limb so classification is uncertain.
NOAA 13376 continued to be the most flare-productive region in
the period with being the source of multiple C-class flares and
two M-class events, which included the largest magnitude flare
(an M2.0 on 26-Jul-2023 at 15:50 UT and an M1.9 on 27-Jul-2023
at 09:44 UT). Continued C-class flaring is expected in the next
24 hours, with a good chance for additional low M-class flares
while the coronal loops of NOAA 13376 remain visible above the
North West limb.
The position of NOAA 13376 on 27-Jul-2023 at 12:00 UT is:
N23W90 , ( 869", 367" )
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,
Shaun Bloomfield (Northumbria University)
Dear Collaborators,
The level of solar activity is moderate. Target region NOAA 13376
has continued to emerge new magnetic flux since the last message,
but remains classified as a beta/D-type sunspot group because its
proximity to the North West limb prevents accurate classification.
NOAA 13380 (beta/C-type) produced an M-class flare in the period
(an M1.6 on on 25-Jul-2023 at 21:08 UT), while target region NOAA
13376 produced two M-class events including the largest magnitude
flare (an M1.2 and M4.6 on 26-Jul-2023 at 04:21 UT and 10:17 UT,
respectively). Additional C-class activity is expected over the
following 24-hour period, with a good chance for further M-class
activity as NOAA 13376 rotates up to the limb.
The position of NOAA 13376 on 26-Jul-2023 at 14:30 UT is:
N23W76 , ( 844", 348" )
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,
Shaun Bloomfield (Northumbria University)
Dear Collaborators,
Solar activity is at a low-to-moderate level. Target region NOAA 13380
was stable in terms of sunspot area since the last message and has been
confirmed as a beta/C-type sunspot group now that it is fully on disk.
This region was the source of low C-class activity in the period while
NOAA 13376 produced a C-class flare and the largest magnitude flare, an
M1.5 on 25-Jul-2023 at 01:36 UT. NOAA 13376 has undergone a significant
episode of flux emergence and consolidation over the past 48 hours to
evolve from an alpha/H-type sunspot group into a compact beta/D-type,
so it becomes the new default target region. Further C-class flaring is
expected in the next 24 hours, with a chance for another M-class flare.
The position of NOAA 13376 on 25-Jul-2023 at 13:00 UT is:
N23W60 , ( 755", 328" )
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,
Shaun Bloomfield (Northumbria University)
Dear Collaborators,
The level of solar activity is low. Target region NOAA 13373 decayed
slightly in terms of sunspot area over the past 24 hours, but it has
remained a beta/E-type sunspot group classification. Both NOAA 13372
(a beta/C-type group) and NOAA 13373 produced C-class flares in the
period. However, the new region rotating over the South East limb -
now designated as NOAA 13380 - has again produced C-class activity.
This new region (NOAA 13380) has not completely rotated its trailing
spots onto the visible disk, but it appears to have at least a beta
magnetic classification and its main leading spot has a well-formed
mature penumbra (so either a C- or D-type Zurich classification).
The default target switches to NOAA 13380. More C-class activity is
expected over the following 24-hour period, with a chance for a low
M-class flare.
The position of NOAA 13380 on 24-Jul-2023 at 11:00 UT is:
S11E63 , ( -827", -218" )
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,
Shaun Bloomfield (Northumbria University)
Dear Collaborators,
Solar activity has been at a very low level since the last
message. The largest event during the period was a C7.2
flare at 14:47 UT on July 23 from NOAA 13372. 13372
(N25W75, beta/E-type) is rotating over the west limb.
The target region NOAA 13373 (beta/E-type) was only
the source of a C1.7 flare. We will continue on this region
for a further 24 hours. Please note that a southeast limb
region (S13E76, unnumbered yet) produced three C2 flares.
C-class activities are expected from various regions with
a slight chance of a low M-class flare in the next 24 hours.
The position of NOAA 13373 on July 23 at 19:30 UT
N08W55 (767", 83")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity was at a moderate level in the past 24 hours.
The largest event was an M3.2 flare at 03:12 UT on July 22
from NOAA 13372. 13372 also produced three C-class flares
in the period. This region retains a beta/E-type configuration.
The target region NOAA 13373 was the source of an M1.0 flare
at 04:12 UT on July 22 and also two C-class flares (C2.3 and
C9.9). 13373 has decayed to a beta/E-type region but is still
emerging new magnetic fluxes in its leading portion. Today the
target will continue on this region. C-class activities are expected
with some chance of a low M-class flare in the next 24 hours.
The position of NOAA 13373 on July 23 at 03:30 UT
N08W45 (663", 73")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at a very low level. The largest
event since the last message was a C2.1 flare at 10:44 UT
on July 21 from the target region NOAA 13373. 13373
also produced another C1.4 flare during the period. It has
been designated as a beta-gamma-delta/E-type sunspot
group. NOAA 13379 (N16E49, beta/F-type) and 13378
(S26W15, beta/C-type) also produced two ~C1 flares.
Additional C-class flares are expected in the next 24 hours.
The position of NOAA 13373 on July 22 at 00:00 UT
N08W29 (454", 60")
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,
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 C9.7 flare at 19:40 UT
on July 20 from NOAA 13373. 13373 was also the source of two
low C-class flares. Today the target will switch to 13373 that
retains a beta-gamma/D-type configuration. Yesterday's target
NOAA 13372 (N23W39) only produced a C1.9 flare but was
classified as a beta-gamma/F-type sunspot group again. Please
note that NOAA 13379 (N16E61, beta/F-type) rotates on the
visible disk and has produced a C2.3 flare. This region is showing
mixed polarities in its leading and trailing portions. More C-class
flares are expected in the next 24 hours.
The position of NOAA 13373 on July 21 at 03:30 UT
N08W17 (274", 55")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity was at a moderate level in the past 24 hours.
The largest event was an M3.8 at 07/19/17:04 UT from
yesterday's target NOAA 13363. 13363 also produced
another M1.4 flare at 07/19/10:49 UT and more than ten
C-class flares. 13363 has completely rotated beyond the
west limb and now we end the Major Flare Watch campaign.
Today the target will switch to NOAA 13372 that has a
beta/F-type configuration. 13372 produced a C2.5 flare
yesterday and is showing mixed polarities in its trailing
portion. In addition, NOAA 13376 (N25E14, beta/D-type)
produced two C2.6 flares during the period. Further C-class
activities are expected in the next 24 hours.
The position of NOAA 13372 on July 20 at 03:30 UT
N24W26 (379", 319")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at a moderate level as the target region
NOAA 13363 rotates beyond the west limb. The largest event in
the previous 24 hours was an occulted M2.1 flare at 20:16 UT
yesterday from 13363. 13363 also produced two high C-class flares.
Please note that a northeast limb region (N15E85, unnumbered yet)
produced an occulted M1.5 flare at 06:45 UT yesterday and
NOAA 13376 (N23E27, beta-gamma/D-type) produced two low
M-class flares (an M1.3 at 19:32 UT and an M1.4 at 20:00 UT).
The Major Flare Watch campaign will continue on NOAA 13363
for a final 24 hours. Low M-class activities are still expected from
various regions with a slight chance of an above M5 flare in the
next 24 hours.
The position of NOAA 13363 on July 19 at 03:30 UT
S21W88 (880", -339")
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,
Ying Li (Purple Mountain Observatory)