Dear Collaborators,
Solar activity on the visible side of the disk continues to be
very low. However, there was another M class flare (M1.0 at
11:39 UT today, 4/20) observed from the Southeast limb region.
The largest event on the disk in the past 24 hours was a C4.3
flare at 16:23 UT yesterday from NOAA 14065. There was no
flare reported from the target region, NOAA 14064.
The source region of the M flare is currently under limb passage.
The sunspot is not visible but brightness in EUV wavelengths
started to be apparent. Today, we will switch the default target
to this unnumbered Southeast limb region. A few C class to
low-M class flares are expected.
The position of the target on 20-April-2025 at 15:30 UT is:
S25E88 (-864", -399").
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 on the visible side of the disk has been very low
since the last message. However, an M4.5 flare was observed from
behind the Southeast limb (at the latitude ~26 deg.) at 23:08 UT
yesterday(4/18) associated with a significant CME. The source
region of this flare is not visible from us yet.
The largest event on the disk in the past 24 hours was a C2.7
flare at 21:48 UT yesterday from NOAA 14064. This region grew
significantly in size to 350 millionths and shows sunspot motion
in the area of trailing (negative) sunspots. While on the contrary,
the target region, NOAA 14062, did not show flare activity during
the past 24 hours.
Today, we will switch the default target to NOAA 14064, on the
trailing sunspot area mentioned in the above. Additional C class
events are expected.
The position of the target in NOAA 14064 on 19-April-2025 at
15:00 UT is: N09E40 (-608", 226").
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 last 24 hours was a C2.4 flare at 3:44 UT today(4/18)
from NOAA 14066, a small region emerged in the East vicinity of the
target region, NOAA 14062.
NOAA 14062 maintains the magnetic complexity of a beta-gamma type
and slightly increased in size (280 millionths). The number of flares
reported from this region in the past 24 hours is only two (C2.1 at
22:00 on 4/17 and C1.8 at 5:51 UT on 4/18). However, this region
is magnetically connected with NOAA 14066 and a plage region in the
Northern vicinity, which enhances the flare activities of the whole
region. Today, we will continue to observe NOAA 14062, as the default
target. Additional C class events are expected in connection with
the activities of nearby regions.
The position of the target in NOAA 14062 on 18-April-2025 at
16:30 UT is: S03E29 (-473", 11").
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 at a low level since the last message.
The largest event in the last 24 hours was a C4.6 flare at 14:11 UT
today(4/17). This event appears to be contributed by two regions,
one is the target region from the Northeast limb (still unnumbered)
and the other is NOAA 14062.
NOAA 14062 developed in size (250 millionths) and magnetic complexity
(beta-gamma type) and produced at least 5 low-C class flares in the
past 24 hours. Today we will switch the default target to NOAA 14062,
because of the flare history during the past 48 hours. We will observe
the Southeast edge of the main (negative) sunspots of NOAA 14062,
expecting additional C class flares.
The position of the target in NOAA 14062 on 17-April-2025 at
15:30 UT is: S03E43 (-656", 0.55").
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 declined to a low level since the last message.
The largest event in the last 24 hours was an M1.3 flare at 17:57 UT
yesterday(4/15) from NOAA 14055 behind the West limb. The second
largest event (C8.1 at 4:18 UT today) was also from this region.
A region rotated from the Southeast limb yesterday was assigned the
NOAA number 14062, classified as beta/D type. This region produced
3 low-C class flares in the past 12 hours.
Yesterday's target, the Northeast limb region is yet unnumbered, but
at least two sunspots came into view. This region only produced a
C class flare (C2.4 at 12:23 UT today), but maintains its rapid
intensity fluctuation in EUV. Today, we will continue to observe this
Northeast limb region, expecting additional C class events.
The position of the Northeast limb region on 16-April-2025 at
16:30 UT is: N10E78 (-920", 193").
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,
The Solar activity continued to be at a moderate level since the last
message. The largest event in the last 24 hours was an M1.5 flare at
10:04 UT today(4/15) from a region behind the Northeast limb.
The target region NOAA 14055 produced more than 10 low-to-mid C
class flares and completed the limb passage yesterday. At this time
we will close the Major Flare Watch campaign on NOAA 14055.
The region produced an M1.5 flare is still behind the limb but showing
rapid intensity fluctuations in EUV wavelengths, observed as a few
low-C class flares after the M1.5 event. Today we will observe the
Northeast limb over this unnumbered region as the default target.
Additional C class flares are expected with a chance of another
M class event.
The position of the Northeast limb region on 15-April-2025 at
16:00 UT is: N09E88 (-943", 157").
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 at a moderate level since the last message.
The target region NOAA 14055 produced 5 M-class flares during the
past 24 hours with the largest being an M4.2 event at 6:36 UT today
(4/14). While it is undergoing limb passage today, NOAA 14055 is the
only region on the disk producing flares above C class.
We will continue to observe NOAA 14055 as the Major Flare Watch
target for another 24 hours. Additional M class flares are expected
over the West limb, with a chance of an event larger than M5.
The position of the target in NOAA 14055 on 14-April-2025 at
15:30 UT is: N09W84 (939", 159").
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 increased to a moderate-to-high level since the
last message. Target NOAA 14055 retains its beta-gamma-delta
configuration and was the most flare-productive region on the disk,
producing 15 low M-class flares and a number of C-class flares
during the period, including the largest—an M2.7 at 11:35 UT
yesterday. At this point, we are initiating a Major Flare Watch on
NOAA 14055. Further low M-class flares are expected within the
next 24 hours, with a chance of an isolated >M5 flare.
The position of NOAA 14055 on 13-Apr-2025 at 11:30 UT is:
N04W71 (903",97")
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,
De-Chao Song (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has been at a moderate level since the last message.
The target NOAA 14055 (N06W55) produced two ~M1 flares and
over ten C-class flares during the period, including the largest one
—an M1.1 at 16:40 UT yesterday. NOAA 14055 has developed into
a beta-gamma-delta configuration with increases in both spot area
and number. We shall continue to observe NOAA 14055 due to its
magnetic complexity and ongoing flux emergence. Further C-class
activity is expected, with a chance of additional low M-class flares
within the next 24 hours.
The position of NOAA 14055 on 12-Apr-2025 at 07:30 UT is:
N06W55 (781",155")
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,
De-Chao Song (Purple Mountain Observatory)
Dear Collaborators,
Solar activity has slightly decreased since the last message.
The largest event in the period was a C4.4 flare at 07:03 UT
today from the target region NOAA 14055 (N08W43). This
region retains a beta-gamma configuration and produced
another two C-class flares in the period. NOAA 14055 is
undergoing significant magnetic flux emergence and shall
remain the target region. Further C‑class activity is expected,
with a good chance of low M‑class flares in the next 24 hours.
The position of NOAA 14055 on 11-Apr-2025 at 11:30 UT is:
N08W43 (648",204")
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,
De-Chao Song (Purple Mountain Observatory)