Dear Collaborators,
Solar activity remains low since the last message. The largest event
in the 24 hours was a C1.3 flare at 21:49 UT yesterday (6/18) from
behind the Southeast limb at ~9 degrees. Several high-B class events
were reported from the regions behind the Southeast limb extended
from 5 to 25 degrees South. A small sunspot rotated from the limb at
~13 degrees South but so far not showing flare activity.
NOAA 14465 approaching the Southwest limb produced 3 high-B class
flares, while yesterday's target, NOAA 14470 has been flare-quiet in
the last 24 hours with slightly decreased sunspot area.
Today, we will observe the Southeast limb region, the current brightest
area at ~8 degrees South, as the default target. Additional high-B to
low-C class flares are expected.
The position of the target on the Southeast limb on 19-Jun-2026 at
16:00 UT is: S08E84 (-929.", -143").
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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity continues to be low since the last message.
The largest event in the period was a C2.0 flare at 11:42 UT today
(6/18) produced by NOAA 14470. This region is also the source of
another C class flare (C1.0 at 07:38 UT) and several B-class events
in the last 12 hours. Yesterday's target, NOAA 14465 only produced
two high-B class flares. A newly emerged bi-polar sunspots in the
Northeast quadrant is not assigned a number yet, but produced two
B class flares yesterday.
Today, we will switch the target back to NOAA 14470 due to the recent
flare history. We will observe the area of its following sunspots
with mixed polarity. Additional high-B to low-C class events are
expected.
The position of the target in NOAA 14470 on 18-Jun-2026 at
16:00 UT is: N07E48 (-699", 108").
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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity remains at a low level since the last message.
The largest event in the period is a C2.5 flare at 14:57 UT
today(6/17) from NOAA 14464 behind the Southwest limb.
Yesterday's target from the Northeast limb was assigned a number,
NOAA 14470 and classified as a beta type. This region appears to
have settled slightly and has been flare-quiet in the last 24 hours.
The previous target, NOAA 14465 is showing a sign of further decay
but has produced a few high-B to low-C class flares since the last
message. Today, we will switch the target back to NOAA 14465 to
observe further activities during its decaying process. Additional
high-B to low-C class events are expected.
The position of the target in NOAA 14465 on 17-Jun-2026 at
16:00 UT is: N06W43 (643", 93").
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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity has been very low since the last message. The largest
event in the period was a C1.9 flare at 18:46 UT yesterday(6/15)
from the Northeast limb region yet unnumbered. This region also
produced a few additional high-B to low-C class flares in the past
24 hours and has begun to progress onto the solar disk. Yesterday's
target, NOAA 14465 has now been re-classified as a beta-gamma type,
but has been flare-quiet, after a C1.8 flare at 13:12 UT yesterday.
Today we will switch the default target to the unnumbered region
rotated from the Northeast limb, because of the recent flare history.
Additional high-B to low-C flares are expected.
The position of the target on 16-Jun-2026 at 15:30 UT is:
N07E74 (-902", 110").
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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity remains low since the last message. Two C1.7 events
are the largest in the period; one at 01:50 UT today(6/15) from the
target region, NOAA 14464 and the other at 09:48 UT today from the
region behind the Northeast limb (~N08 deg). NOAA 14464 is showing
sign of decay losing trailing sunspots, while the Northeast limb
region has produced a few more low-C class activities in the past
several hours.
NOAA 14465 (N07W18) has been undergoing flux emergence since
yesterday; new spots were added in its Southeast and also Northwest
vicinities. Although currently no flare is reported from NOAA 14465,
these new spots are occasionally showing brightening. Today, we will
switch the default target from NOAA 14464 to NOAA 14465 to keep
track of these flux emergence, until the Northeast limb region rotates
to Earth-view. In the next 24 hours, we will observe NOAA 14465 at
the Southeast side of the main sunspot expecting C-class events.
The position of the target in NOAA 14465 on 15-Jun-2026 at
16:00 UT is: N06W16 (272", 92").
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,
Aki Takeda (Montana State University)
--
Dear Collaborators,
Solar activity has continued at a low level. The largest event
was a C2.5 flare at 12:40 UT yesterday from a plage region
located at S21W82. Additionally, NOAA 14462 (N16W83)
produced two C1.0 flares and a B6.8 flare, while NOAA 14466
(N06W81) produced a B8.2 flare and a C1.5 flare. However,
these three regions have rotated nearly beyond the west limb.
The target region, NOAA 14464, produced a B9.1 flare at
10:40 UT today and still retains a beta/D-type sunspot group.
Therefore, today the target will remain at 14464. Low-C flares
are probable over the following 24 hours.
The position of NOAA 14464 on 14-Jun-2026 at 11:30 UT is:
S13W51 (716", -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 has dropped to a low level. An unnumbered
region near the southeast limb (S05E80) produced the
largest event, a C1.9 flare at 18:42 UT yesterday, and a
C1.0 flare. NOAA 14464 produced a C1.8 flare at 02:00 UT
today and two ~C1 flares. This region has been classified
as a beta/D-type sunspot group. Yesterday’s target, NOAA
14465 (beta/C-type, N09E07), only produced a C1.4 flare.
Today, the target will switch from 14465 to 14464. Additional
low-C flares are probable over the following 24 hours.
The position of NOAA 14464 on 13-Jun-2026 at 11:30 UT is:
S13W36 (542", -223")
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
target region NOAA 14465 produced two ~C1 flares, with
the largest being a C5.2 flare at 02:04 UT today. Although
this region retains a beta-gamma/D-type classification, it
has begun to show magnetic signs of fragmentation and
decay. Today, the target will remain with 14465, considering
its magnetic complexity and prior flaring history. Note that
an unnumbered region (S09E89) was also the source of
three ~C1 flares. More low-C flares are expected over the
next 24 hours.
The position of NOAA 14465 on 12-Jun-2026 at 11:30 UT is:
N09E23 (-365", 138")
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 an intermediate level in the past
24 hours. The largest event was a C9.0 flare at 08:22 UT
today from the target region NOAA 14465. This region has
retained its high productivity and a beta-gamma/D-type
magnetic configuration, with a further emergence of new
spots. Today, the target will continue on 14465. In addition,
NOAA 14456 (beta/E-type, N18W91) also produced six
~B8-C6 flares before it completely rotated out of Earth-view.
Further C-class flares are expected with a chance for an
isolated low-M flare in the following 24 hours.
The position of NOAA 14465 on 11-Jun-2026 at 11:30 UT is:
N09E33 (-510",140")
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. The target region
NOAA 14465 produced four low-C flares, with the largest
magnitude being a C2.6 at 00:51 UT today. This region has
increased in magnetic complexity to a beta-gamma/D-type,
with its further development. Today, the target should remain
at 14465. Note that a newly-emerged region, NOAA 14466
(beta/B-type, N06W23), also produced three ~C1-C2 flares.
Additional C-class flares are expected in the coming 24 hours.
The position of NOAA 14465 on 10-Jun-2026 at 11:30 UT is:
N09E47 (-684", 143")
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)