Dear Collaborators,
Solar activity has been at a low level since the last message. The source
of the M1.4 flare yesterday has now been designated as NOAA 14105 and is
classified as a beta/D-type region. The region displays an extended loop
system and shows signs of flux cancellation in its trailing portion. Chance
of an isolated low-to-intermediate level event over the next 24 hours.
The position of NOAA 14105 on 4-Jun-2025 at 15:30 UT is:
S14E64, (-825", -227")
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,
Ryan Milligan (Queen's University Belfast)
Dear Collaborators,
Solar activity continues at a low level. NOAA 14100 has shown slight
further activity since the last message, however several flares were
produced from a currently unnumbered active region at the southeast limb.
The largest of these was an M1.4 at 12:52 UT today. This region already
shows notable emerging flux and numerous loop structures while not yet
fully transitioned over the eastern limb. At this time, we are ending the
Major Flare Watch and switching the target region to the southeast limb.
Further C- and M-class activity is anticipated in the next 24 hours.
The approximate position of the target region on 03-June-2025 at 13:30 UT is
S14E87, (-916", -228")
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,
Harry Greatorex (Queen's University Belfast)
Dear Collaborators,
Solar activity has continued to decrease since the last message. Several
flares were produced in the last 24 hours, the largest being an M3.3 from
NOAA 14100 at 10:59 UT today. NOAA 14100 has been reclassified as a
beta-game type region. The Major Flare Watch will remain active for what
may be the final 24 hours with NOAA 14100 as the target region. Additional
C-class and low M-class activity is expected with a slight chance for an
isolated >M5 flare in the next 24 hours.
The position of NOAA 14100 on 02-June-2025 at 11:30 UT is
N10W22, (350", 172")
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,
Harry Greatorex (Queen's University Belfast)
Dear Collaborators,
Solar activity has decreased to a moderate level. The target
region NOAA 14100 was the source of an M4.5 at 08:08 UT
and an M2.9 at 15:36 UT flares yesterday. This region has
developed a delta to beta-gamma-delta/E-type sunspot group.
Today, the Major Flare Watch will remain in effect with NOAA
14100. More low-M activity is probable, with a chance for an
isolated >M5 flare in the following 24 hours.
The position of NOAA 14100 on 1-Jun-2025 at 11:30 UT is:
N08W07 (114", 142")
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 grown to a high level. The largest event
since the last message was an M8.2 flare at 23:31 UT
yesterday from the target region NOAA 14100. It retained a
beta-gamma/E-type sunspot group and increased in sunspot
area to 440 μh. The target shall remain with NOAA 14100,
although we are issuing a Major Flare Watch alert at this time
due to the increased possibility of another >M5 flare within the
next 24-48 hours.
The position of NOAA 14100 on 31-May-2025 at 07:30 UT is:
N08E10 (-163", 144")
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 reached a moderate level. The largest event
since the last message was an M3.4 flare at 05:56 UT produced
by the target region NOAA 14100. This region also produced five
~C1 plus two high-B flares, and was the most productive in the
period. It retained a beta-gamma/E-type sunspot group and emerged
new positive magnetic fluxes in its leading portion. Further C-class
activity is expected, with a chance for another low-M flare in the
next 24-hour period.
The position of NOAA 14100 on 30-May-2025 at 11:30 UT is:
N08E21 (-337", 145")
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 increased to an intermediate level, due to a
C7.0 flare at 02:51 UT today from the target region NOAA 14100.
This region also produced two ~C1 and a high-B flares since
the last message. 14100 has continued to grow in spot maturity,
becoming a beta-gamma/E-type sunspot group, with the emergence
of new visible magnetic fluxes surrounding its main spots. NOAA
14100 shall continue as the target region. Besides, NOAA 14099
(beta-delta/D-type, S13E25) also produced four low-C flares
yesterday. Further C-class activity is expected, with a low-M flare
likely in the following 24-hour period.
The position of NOAA 14100 on 29-May-2025 at 11:30 UT is:
N08E36 (-552", 145")
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 been at a low level since the last message.
Most low-C flares came from NOAAs 14099 and 14100. NOAA
14099 (beta/D-type, S13E34) was the source of five ~C1-C2 flares.
NOAA 14100 produced three ones, with the largest being a C2.1
at 01:18 UT today. This region has emerged new sunspots and
has been classified as a beta/E-type magnetic configuration. Today
we shall end the Major Flare Watch campaign, and the default
target shall switch to NOAA 14100, due to its higher magnetic
complexity. Yesterday’s target region has already rotated beyond
the west limb. More C-class activity is expected in the next 24 hours.
The position of NOAA 14100 on 28-May-2025 at 11:30 UT is:
N08E48 (-698", 144")
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 dropped to a moderate level. The target region
NOAA 14098 produced the largest flare in the period - an M2.9
at 12:50 UT yesterday. It was also the source of three low-to-high
C-class flares. 14098 retained a beta-gamma/D-type sunspot
group but showed signs of decay in its following portion. Today,
the Major Flare Watch will be extended for the last 24 hours with
NOAA 14098. Note that NOAA 14100 (beta/D-type, N07E59) also
produced an M1.4 at 13:27 UT yesterday, plus several C-class
flares as it rotated on disk. Additional low-M activity is likely, with
a slight chance for an isolated >M5 flare in the coming 24 hours.
The position of NOAA 14098 on 27-May-2025 at 11:30 UT is:
S04W77 (920", -61")
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 been at a high-to-low level. The largest event
since the last message was an M8.9 flare at 16:18 UT yesterday
from the target region NOAA 14098. This region also produced
four low-to-mid C-class flares. 14098 has grown in spot maturity
to display larger penumbrae on its leading portion, changing it to
a beta-gamma/D-type magnetic configuration. Today the Major
Flare Watch will remain in effect with NOAA 14098. More low-M
activity is probable, with a chance for a >M5 flare in the following
24 hours.
The position of NOAA 14098 on 26-May-2025 at 11:30 UT is:
S04W64 (850", -56")
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)