Dear Collaborators,
The level of solar activity is very low. The target region has been
designated as NOAA 12845 and was classified as a beta/B-type sunspot
group at the start of the UT day. NOAA 12845 continued producing low
B-class flares for a while after yesterday's message, but it ceased
when the region stopped emerging new flux. NOAA 12843 displayed the
greatest frequency and magnitude of flaring in the period (with the
largest being a B9.7 on 18-Jul-2021 at 06:56 UT), but 12843 has now
rotated over the South West limb. High-lying loops from another new
region are now visible over the North East limb, with STEREO-A EUV
images showing it to be a compact coronal loop system. This region
has already produced three B-class flares of increasing magnitudes
(B1.6, B2.2, and B3.8 on 18-Jul-2021 at 10:14, 16:54, and 19:32 UT,
respectively), all three of which are footpoint occulted (i.e., the
true peak flare magnitudes would be greater). This region becomes
the new target, with B-class activity expected and a strong chance
for a C-class flare over the following 24-hour period as the region
rotates over the North East limb.
The approximate position of this region on 18-Jul-2021 at 20:30 UT is:
N25E90 , ( -855", 397" )
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 very low level. The target NOAA 12843 remained
stable and flare-quiet since the last message as it rotated up to the
South West limb. NOAA 12842 was initially stable but appears to have
increased in complexity to a beta/C-type sunspot group while forming
an East-West magnetic polarity inversion line and producing 3 B-class
flares, including the largest since the last message (a B7.8 flare on
17-Jul-2021 at 03:01 UT). A new region emerged just East of central
meridian and rapidly developed spots in both polarities, currently
displaying at least a beta/B-type sunspot group classification. This
region is expected to be numbered as 12845 at the start of the next
UT day and has already produced 2 B-class flares (a B4.4 and a B4.7
on 17-Jul-2021 at 16:12 and 17:05 UT, respectively). This new region
becomes the target, with additional B-class activity expected and a
good chance for a C-class flare in the next 24 hours if the region
continues to emerge new flux.
The approximate position of this region on 17-Jul-2021 at 18:00 UT is:
S16W00 , ( 0", -333" )
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. The target region was remained
unnumbered at the beginning of the UT day and with rotating further
on disk shows small spots/pores in its trailing polarity flux. NOAA
12843 has increased in activity since the last message even though
it has remained classified as an alpha/A-type sunspot group, being
the source of several B-class and two C-class flares (including the
largest of the period, a C1.7 on 16-Jul-2021 at 08:27 UT). 12843
returns to being the target region due to the increase in flaring
frequency and magnitude. Additional low C-class flares are possible
over the next 24 hours.
The position of NOAA 12843 on 16-Jul-2021 at 20:00 UT is:
S17W67 , ( 832", -303" )
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 an extremely low level. The target region
was confirmed as being numbered as NOAA 12843 at the beginning
of the UT day, but at that time it had decreased in complexity
to be classified as an alpha/A-type sunspot group. Although the
two flares that occurred from NOAA 12843 since the last message
included the largest of the period (a B5.3 event on 15-Jul-2021
at 18:44 UT), a succession of low B-class flares were produced
by a new sunspot region while rotating over the South East limb.
This new region has not yet fully rotated on disk, but becomes
the target because further B-class flares are probable from it
in the following 24-hour period.
The approximate position of this region on 15-Jul-2021 at 20:30 UT is:
S45E84 , ( -664", -671" )
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 extremely low. The target region
consolidated its leading-polarity pores into a sunspot with no
penumbra since the last message, but remained unnumbered at the
start of the UT day. This region is expected to be numbered as
NOAA 12843 tomorrow with a designation of a beta/B-type sunspot
group (if it remains stable). The target region continued to be
the most active magnetic feature on the visible disk, although
this was limited to A-class flaring. Low-to-mid-B-class flaring
is possible from this region over the next 24 hours.
The approximate position of this region on 14-Jul-2021 at 18:00 UT is:
S17W41 , ( 594", -327" )
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 very low level. The target NOAA 12842
has remained stable since yesterday's message, continuing to
be classified as an alpha/H-type sunspot group, while 12841
was confirmed as having decayed to alpha/A-type designation.
A compact magnetic flux region has recently started emerging
in the South West quadrant showing small pores in both of its
magnetic polarities. This region has now produced the largest
flare since the last message (a B2.0 flare on 13-Jul-2021 at
18:28 UT) and becomes the new target. Further B-class flares
are probable in the following 24-hour period.
The approximate position of this region on 13-Jul-2021 at 20:00 UT is:
S17W28 , ( 423", -335" )
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 very low. The target region
NOAA 12841 decayed somewhat since yesterday's message. NOAA
12842 has been stable in terms of area and number of spots,
remaining designated as an alpha/H-type sunspot group. This
region produced a single flare (a B1.2 event on 12-Jul-2021
at 15:29 UT) that was also the largest in the period. More
B-class activity is probable from NOAA 12842 over the next
24 hours.
The position of NOAA 12842 on 12-Jul-2021 at 20:30 UT is:
N24E53 , ( -690", -346" )
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 very low level. The target region that is
the return of NOAA 12833 has been now numbered as NOAA 12842 and
is designated as an alpha/H-type sunspot group. This region has
not produced any flare activity since yesterday's message, while
NOAA 12841 has shown signs of trailing spot consolidation in the
period and was the source of three B-class flares (including the
largest of the period with a B7.1 flare on 11-Jul-2021 at 01:25
UT). The target switches back to NOAA 12841 with further B-class
flares probable in the following 24-hour period.
The position of NOAA 12841 on 11-Jul-2021 at 22:00 UT is:
S18E33 , ( -490", -345" )
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. The target region has been numbered
as NOAA 12841 and designated as a beta/B-type sunspot group, although it
has decayed and lost several pores from its trailing polarity flux. This
region produced two B-class flares in the past 24 hours, including the
largest flare of the period (a B5.1 flare on 9-Jul-2021 at 20:36 UT). A
spot region is currently rotating over the North East limb and is likely
to be the return of NOAA 12833 (an alpha magnetic classification on its
last disk passage). The target changes to this unnumbered spot region at
the North East limb. B-class activity is possible over the next 24 hours.
The approximate position of this region on 10-Jul-2021 at 18:00 UT is:
N24E87 , ( -861", 380" )
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. The unnumbered target
pore region has grown slightly since the last message and now shows
pores in both its leading and trailing polarities. This region has
remained flare-quiet in the past 24 hours but NOAA 12840 continued
flaring from beyond the North West limb, producing three foot-point
occulted C-class flares (the largest being a C7.0 on 9-Jul-2021 at
10:31 UT). The high-lying loops of NOAA 12840 are now rotating out
of view, so the target remains on the pore region in the South East
quadrant. B-class activity is probable over the following 24 hours.
The approximate position of this region on 9-Jul-2021 at 21:00 UT is:
S19E65 , ( -810", -332" )
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)