Dear Collaborators,
Solar activity remains at an intermediate level. Several flares were
produced since the last message, the largest being an M6.4 from NOAA 14419
at 17:15 UT yesterday. Both NOAA 14419 and 14420 retain their
beta-gamma-delta configuration, though NOAA 14419 is now situated at the
northwestern limb and continuing its transition beyond. The Major Flare
Watch will remain active with NOAA 14419 as the target region, however,
additional attention should also be paid to NOAA 14420. Further high
C-class and mid-low M-class activity is likely with the chance for
additional (potentially partially occulted) >M5.0 events in the next 24-48
hours.
The position of NOAA 14419 on 25-April-2026 at 15:30 UT is:
N15W88, (920", 248")
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 further increased. NOAA 14419 was the site of two
X-class flares since the last message. These flares were an X2.4 and X2.5
occurring at 00:51 UT and 08:01 UT today, respectively. Additionally, NOAA
14419 and NOAA 14420 have both been upgraded to beta-gamma-delta type
regions. At this time, we are initiating a Major Flare Watch. The primary
target region should switch to NOAA 14419 due to the high chance for
further >M5.0 activity as it transits the solar limb, however close
attention should be paid to NOAA 14420 (N16E21) as this region also shows
potential for isolated >M5.0 events in the next 24-48 hours.
The position of NOAA 14419 on 24-April-2026 at 11:30 UT is:
N15W67, (849", 276")
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 is increasing. Since the last message, NOAA 14420 was the
site of multiple flares, including an M1.2 at 04:50 UT today. However, the
largest flare of the last 24 hours was produced by NOAA 14419, which was an
M4.3 at 08:40 UT today, though this region is now situated at the
northwestern limb. NOAA 14420 continues to be productive as it further
transits the disk, and retains its beta-gamma configuration. Additionally,
a large bright region beyond the northeastern limb appears to be
approaching with signs of significant flux. Sunspot activity from NOAA
14420 appears to have settled slightly though there are still signs of
dynamic motion in the region. NOAA 14420 will continue as the target
region, further C-class activity is anticipated with the chance for
additional isolated M-class events.
The position of NOAA 14420 on 23-April-2026 at 11:30 UT is:
N16E31, (-473", 330")
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 levels remain low but have increased very slightly since the
last message. Numerous flares were produced in the last 24 hours, the
largest being a C2.0 from newly numbered active region NOAA 14420 at 14:15
UT yesterday. NOAA 14420 was the source of 18 flares since the last
message, currently located in the northeastern quadrant of the solar disk.
This region is classified as a beta-gamma type region with notable levels
of sunspot dynamism. The target region will switch to NOAA 14420 for the
next 24 hours, further C-class activity is expected.
The position of NOAA 14420 on 22-April-2026 at 11:30 UT is:
N16E45, (-650", 319")
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 levels remain low. Several flares were produced since the
last message, the largest being an occulted C5.3 from a region beyond the
southeastern limb at 05:53 UT today. The region(s) beyond the eastern limb
have been the most productive in the last 24 hours, while NOAA 14419 has
remained relatively quiet, despite retaining its beta-gamma configuration.
As NOAA 14419 begins to approach the northwestern limb, it will remain the
target region for what might be the final 24 hours. However, additional
attention should be paid to the regions beyond the eastern limb as they
come further into view. Additional C-class activity is expected.
The position of NOAA 14419 on 21-April-2026 at 11:30 UT is:
N11W31, (478", 301")
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 is at a low level. A low number of small flares were
produced over the last 24 hours. The largest being a C1.0 at 08:33 UT today
from NOAA 14419. At present, NOAA 14419 retains its beta-gamma
configuration but has not shown a significant amount of activity.
Elsewhere, the solar disk appears sparsely populated. NOAA 14419 will
remain the target region, with further low C-class activity expected.
The position of NOAA 14419 on 20-April-2026 at 11:30 UT is:
N14W19, (302", 310")
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 continues at a very low level with the GOES soft X-ray
flux below C1. The target region NOAA 14419 was the source of a
B4.9 flare and the limb region NOAA 14416 (N22W91, alpha/H-type)
produced 3 B-class flares in the last 24 hours. NOAA 14419 retains
a beta-gamma/E-type configuration but decreases in the sunspot
area and number of spots. B-class activity is expected with C-class
flare probable in the following 24 hours.
The position of NOAA 14419 on April 19 at 07:30 UT is:
N13W03 (48", 300")
See http://www.SolarMonitor.org <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 continues at a low level. The largest event
since the last message was a C1.6 flare at 06:40 UT today,
which is actually happening now, from the northwest limb
region NOAA 14416 (N20W82). 14416 also produced seven
B-class flares during the period and was designated as a
beta/C-type region. It is rotating over the west limb. The
target region NOAA 14419 only produced a B5.6 flare at
16:59 UT yesterday. 14419 retains a beta-gamma/E-type
configuration. Today we will continue to watch it. Further
B- and C-class activities are expected in the next 24 hours.
The position of NOAA 14419 on April 18 at 07:30 UT is:
N14E11 (-177", 316")
See http://www.SolarMonitor.org <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,
The largest event in the past 24 hours was a C4.2 flare at 04:27 UT today,
produced by the target region NOAA 14419. 14419 also produced 4 ~C1
and 11 B-class flares during the period. It retains a beta-gamma/E-type
configuration. Further C-class activity is expected in the next 24-hour
period.
The position of NOAA 14419 on April 17 at 07:30 UT is:
N13E24 (-380", 295")
See http://www.SolarMonitor.org <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 remains at a low level. The largest event since the last
message was a C1.2 flare at 00:39 UT today from the target region
NOAA 14419. 14419 was also the source of a C1.0 and nine B-class
flares. It has been designated as a beta-gamma/E-type configuration
now, further increasing the sunspot area and number of spots. Additional
C-class flares are expected in the coming 24 hours.
The position of NOAA 14419 on April 16 at 07:30 UT is:
N13E39 (-587", 284")
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)