Dear Collaborators,
Solar activity has been at a low-to-moderate level in the last 24
hours. The largest event since the last message was an M2.5
flare at 13:49 UT today from NOAA 13764 (alpha/H-type, S11E88).
NOAA 13762 has increased its magnetic complexity to be classified
as a beta-gamma-delta/E-type configuration and produced a C9.0
flare at 15:20 UT yesterday. Yesterday’s target NOAA 13751
(beta-gamma-delta/E-type, S08W49) showed magnetic signs of
decay and only produced a C4.5 flare. Today we shall end the
Major Flare Watch campaign, and the default target shall switch
to NOAA 13762 due to its increased configuration and prior flaring
history. Further C-class flares are expected with a chance for
additional low-M flares in the next 24 hours.
The position of NOAA 13762 at 14:30 UT on 23-Jul-2024 is:
S13E29 (-450", -283")
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 has increased slightly in the past
24 hours. NOAA 13762 (beta/D-type, S13E44) produced three
consecutive low-M flares, with the largest being an M4.0 at
03:55 UT today. NOAA 13744 (beta/D-type, N15W90) also
was a source of three low-M flares, the largest of which was
an M3.2 flare at 23:21 UT yesterday. The target region NOAA
13751 retains its beta-gamma-delta/E-type configuration but
only has produced several C-class flares. The MM#003 Major
Flare Watch continues with NOAA 13751 as the target for a
final 24 hours. Further C-class flares are expected with a
chance for a mid-to-high M-class flare from various regions
over the following 24 hours.
The position of NOAA 13751 at 13:00 UT on 22-Jul-2024 is:
S08W35 (538", -198")
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 has continued to be moderate.
The target region NOAA 13751 was a source of an M1.5
flare at 08:28 UT today. 13751 has undergone slight
decay since the last message but has remained a
beta-gamma-delta/E-type sunspot group. The MM#003
Major Flare Watch continues for a further 24 hours with
NOAA 13751 as the target. Please also note that NOAA
13744 (beta/C-type, N15W77) produced two M1 flares
as it rotated toward the North West limb, with the largest
event in the period (an M1.6 at 18:36 UT yesterday).
Continued low-M activity is possible with a chance of a
>M5 flare in the next 24-hour period.
The position of NOAA 13751 at 11:30 UT on 21-Jul-2024 is:
S09W22 (350", -222")
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 moderate level. The target
region NOAA 13751 produced two largest magnitude
flares, including an M2.0 at 17:53 UT yesterday and
an M1.8 at 07:10 UT today. This region retains its
beta-gamma-delta/E-type magnetic configuration and
has increased in sunspot area and counts. Today NOAA
13751 shall continue as the Major Flare Watch region.
Besides, NOAA 13758 (beta/B-type, S07W75) also
produced an M1.0 flare at 22:44 UT yesterday. Additional
low-M activity is very likely with a chance of a >M5 flare
in the following days.
The position of NOAA 13751 at 11:30 UT on 20-Jul-2024 is:
S08W06 (98", -210")
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 at a moderate level. NOAA 13753
(beta/C-type, N15W69) showed signs of decay and
produced an M3.2 flare at 08:13 UT today as it rotated to
the North West limb. NOAA 13751 has now developed into
a beta-gamma-delta/E-type region and has been the most
magnetically complex one on the disk, with an area of 400
MSH. 13751 shows signs of mixed polarity within its leading
and intermediate portions. Today the Major Flare Watch region
will switch back to NOAA 13751. Yesterday’s target NOAA
13738 has rotated out of Earth-view. More low-M activity is
probable with a chance of a >M5 flare in the coming days.
The position of NOAA 13751 at 11:30 UT on 19-Jul-2024 is:
S08E07 (-114", -208")
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 decreased to a moderate level in the past 24 hours.
There are two active regions (NOAA 13751, 13753) that produced
four low-M flares. NOAA 13751 (beta-gamma/E-type, S08E20) was
a source of two largest flares (including an M2.2 at 10:04 UT and an
M2.0 at 10:20 UT today), with an emergence of new magnetic fluxes.
NOAA 13753 (beta/C-type, N11W57) produced an M1.2 flare and an
M2.0 flare yesterday but it shows magnetic signs of decay. Although
the limb target NOAA 13738 was flare quiet in the period, its looptop
shall remain the target with the Major Flare Watch before disappearing
from Earth-view. More low-M activity is probable with a slight chance
of a >M5 flare in the following 24-hour period.
The approximate position of NOAA 13738 at 11:30 UT on 18-Jul-2024 is:
N09W90 (932", 147")
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 decreased slightly in the past 24 hours.
The limb target region NOAA 13738 produced an M1.2 flare
at 09:26 today. Today we will continue the Major Flare Watch
for another 24 hours, due to the complex beta-gamma-delta/F-type
magnetic configuration, sunspot area of >1000 MSH, and past
flaring history in this region. Besides, some other active regions
(NOAA 13753, 13744, 13743) also produced several M-class
flares, including the largest magnitude being an M5.1 at 06:26
today from NOAA 13743 (beta/E-type, S11W37). More low-M
activities are very likely with a chance of an isolated >M5 flare
in the next 24 hours.
The position of NOAA 13738 at 11:30 UT on 17-Jul-2024 is:
N09W90 (932", 147")
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,
Yesterday's Target NOAA 13738 just produced an X1.9 flare
(at 13:11 UT) when it was rotating over the west limb. This
region retains a complex beta-gamma-delta/F-type configuration
though it seems to enter the decay phase. The Major-Flare-Watch
target will switch back to 13738 for the next 24 hours. M-class
activities are expected with a chance of a major (>M5) flare
(perhaps occulted) in the following 24-hour period.
The position of NOAA 13738 on July 16 at 11:30 UT is:
S09W75 (901", -166")
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 continued at a moderate level in the past 24
hours. The largest event since the last message was an M3.6
flare at 07:24 UT today produced by NOAA 13753 (beta/D-type,
N12W29), a newly-emerged region. NOAA 13744 (beta/C-type,
N16W08) also produced an M1.4 flare and a C7.3 flare but it
shows signs of decay. NOAA 13751 became the most productive
region in the period and produced four high C-class flares including
the largest magnitude being a C9.4 flare at 22:23 UT yesterday.
This region has been classified as a beta-gamma/D-type magnetic
configuration, with new negative magnetic fluxes emerging in its
following portion. It also shows a high and increasing current helicity.
Today the Major Flare Watch region will switch to NOAA 13751
from NOAA 13738. Yesterday’s target (13738) was flare-quiet in
the period. Further C-class flares are expected with additional
low-M activity probable in the following 24 hours from various
active regions.
The position of NOAA 13751 at 11:30 UT on 16-Jul-2024 is:
S08E47 (-685", -181")
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 decreased since the last message. The
target region NOAA 13738 has been still the most productive
in the period. This region was a source of six M-class and
numerous C-class flares, with the largest being an M3.0 at
04:05 UT yesterday and an M2.7 at 09:21 UT today. NOAA
13738 has grown in terms of sunspot area by consolidating
some spots and it remains a beta-gamma-delta/F-type sunspot
group. 13738 shall remain the target with the Major Flare Watch
in effect. Further low-M flares are expected, with a chance of
an above-M5 flare in the next 24-48 hours.
The position of NOAA 13738 at 11:30 UT on 15-Jul-2024 is:
S09W60 (808", -183")
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)