Dear Collaborators,
Solar activity has continued at an intermediate level. The
target region NOAA 14435 produced four flares, including
the largest being a C9.5 at 16:05 UT yesterday. This region
has been classified as a beta-gamma/D-type sunspot group,
though it is nearing the west limb. Today, the target will
remain with NOAA 14435 for a further 24 hours. Additional
low-C activity is possible in the coming 24 hours.
The position of NOAA 14435 on 16-May-2026 at 11:30 UT is:
N22W88 (878", 356")
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 remained at an intermediate level. The
largest event since the last message was a C6.7 flare at
13:10 UT today from the target region NOAA 14435. This
region has retained its high productivity and has developed
into a beta-gamma/D-type sunspot group. Today the target
shall remain at 14435. Note that NOAA 14438 (N20W51,
beta/D-type) also produced six low-C flares. Further C-class
activity is expected in the next 24 hours.
The position of NOAA 14435 on 15-May-2026 at 11:30 UT is:
N22W73 (842", 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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has increased to an intermediate level since the
last message. The largest event was a C5.5 flare at 06:31 UT
today, produced by NOAA 14435. This region has become the
most productive and has increased in magnetic complexity,
now being classified as a beta/C-type. Yesterday’s target NOAA
14432 produced four low-C flares as it rotated out of earth view.
Today NOAA 14435 becomes the new target. Further C-class
activity is expected in the coming 24 hours.
The position of NOAA 14435 on 14-May-2026 at 11:30 UT is:
N23W62 (772", 390")
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 remained at a low level. NOAA 14432 continues
to be the most productive region, producing numerous <=C2.1
flares, and retains its beta-gamma/E-type magnetic configuration.
Yesterday’s target, NOAA 14436, has been downgraded to a
beta/C-type configuration and produced only a few ~C2 flares.
Today we shall end the Major Flare Watch campaign, and the
default target shall switch back to NOAA 14432. Additional low-C
flares are expected in the next 24 hours.
The position of NOAA 14436 on 13-May-2026 at 15:30 UT is:
N14W91 (920", 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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has returned to a low level since the last message.
NOAA 14432 (N14W74, beta-gamma/E-type) has maintained its
high productivity, producing eleven <C2 flares. The target region
NOAA 14436 has been classified as a beta-gamma/D-type,
although it has become flare-quiet during the period. Today, the
Major Flare Watch will remain active for a final 24 hours with
NOAA 14436. The low-C activity is expected, with a slight chance
for an >M5 flare in the coming 24 hours.
The position of NOAA 14436 on 12-May-2026 at 07:30 UT is:
N19E37 (-542", 347")
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 high level due to an eruptive M5.8
flare at 13:19 UT yesterday from NOAA 14436. This region has
been classified as beta/D-type. At this point, we are implementing
a Major Flare Watch on 14436. Yesterday’s target NOAA 14432
(N14W60, beta‑gamma/E-type) has produced multiple low‑C and
B-class flares, showing significant magnetic flux emergence.
Additional C-class activity is expected, with the possibility of
another >M5 from 14436 within the next 48 hours.
The position of NOAA 14436 on 11-May-2026 at 07:30 UT is:
N19E51 (-699", 340")
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 continued at a low level. The target region,
NOAA 14432, has remained the most productive, producing
14 low-C flares and the largest being a C3.8 at 09:32 UT today.
Significant new spots emerged in this region, which retains a
beta/D-type magnetic configuration. Today, the target shall
remain on NOAA 14432. Further C-class activity is expected,
with a low-M flare likely in the following 24 hours.
The position of NOAA 14432 on 10-May-2026 at 11:30 UT is:
N14W49 (697", 263")
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 low level since the last message.
NOAA 14432 has been the most productive region, producing
~20 low-C flares, the largest of which was a C4.2 flare at 15:39
UT yesterday. This region has been classified as a beta/D-type
magnetic configuration, with its sunspot area and number
increasing. Yesterday’s limb target has been flare-quiet during
this period. Today 14432 should become the new target. Further
C-class activity is expected, with a chance for an isolated low-M
flare in the coming 24 hours.
The position of NOAA 14432 on 9-May-2026 at 15:30 UT is:
N14W38 (569", 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,
Qiao Li (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has grown to a moderate level due to an eruptive
M2.6 flare at 14:20 UT yesterday from the target region. This
region (still unnumbered) has become the most productive in
the past 24 hours, also producing a C4.9 and two ~C1 flares.
Today, the target should remain at this limb region. Further
C-class activity is expected, with another low-M flare likely in
the next 24 hours.
The approximate position of the target on 08-May-2026 at 11:30 UT is:
N19E88 (-900", 300")
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 slightly in the past 24 hours. An
unnumbered region behind the northeast limb produced the
largest event, a partially occulted C4.5 flare at 01:28 UT
today, which was long-duration and accompanied by a CME.
Yesterday’s target, NOAA 14431, produced a ~B7 and a ~C2
flare but showed signs of decay, with its magnetic configuration
degrading to beta/C-type. Today, the target will switch to this
limb region from 14431. Additional low-C activity is expected
in the following 24 hours.
The approximate position of the target on 07-May-2026 at 11:30 UT is:
N17E88 (-900", 288")
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)