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MM#003 Major Flare Watch
by Max Millennium Chief Observer 28 Apr '26

28 Apr '26

Dear Collaborators, Solar activity continues at a low-moderate level. Several flares were produced since the last message, the largest being a C9.0 from NOAA 14420 at 09:14 UT today. NOAA 14420 has seen a partial reduction in the levels of sunspot dynamism since the last message, however this region still shows significant flux. Meanwhile, NOAA 14425 has doubled in size over the last 24 hours but has not produced any particularly significant flares. The Major Flare Watch will remain active for a final 24 hours with NOAA 14420 as the primary target region. Additional attention should be paid to the development of NOAA 14425 also. Further mid-high C-class activity is anticipated with the very slight chance for a >M5.0 event. The position of NOAA 14420 on 28-April-2026 at 11:30 UT is: N16W36, (540", 320") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 27 Apr '26

27 Apr '26

Dear Collaborators, Solar activity remains at a low-moderate level. NOAA 14420 was the site of numerous flares in the last 24 hours including an M6.0 at 22:51 UT yesterday. NOAA 14419 has now passed beyond the northwestern limb. Meanwhile, NOAA 14420 continues to develop, it retains its beta-gamma-delta type configuration while showing significant levels of flux. Additionally, NOAA 14425 has developed into a beta-gamma-delta region, though this region is not quite as large as NOAA 14420. Due to the continued production of large flares, the Major Flare Watch will be extended with NOAA 14420 as the target region. Additional high C-class and low M-class activity is likely, with the chance for a further isolated >M5.0 flare. The position of NOAA 14420 on 27-April-2026 at 11:30 UT is: N16W23, (359", 329") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 26 Apr '26

26 Apr '26

Dear Collaborators, Solar activity is at a low-moderate level. Several flares were produced in the last 24 hours, the largest being an M1.4 from an unnumbered region in close proximity (and possibly associated with) NOAA 14420 at 13:54 UT today. NOAA 14419 and NOAA 14420 have been relatively quiet since the last message. NOAA 14419 is almost out of view over the northwestern limb. NOAA 14420 shows significant flux and retains its beta-gamma-delta configuration. The Major Flare Watch will be extended for what may be the final 24 hours with NOAA 14420 as the primary target region. Additional attention should also be paid to NOAA 14419 as this region may produce occulted events as it passes out of view. Further C-class activity and low M-class activity is expected with a small chance for an isolated >M5.0 event. The position of NOAA 14420 on 26-April-2026 at 11:30 UT is: N17W11, (174", 351") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 25 Apr '26

25 Apr '26

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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 24 Apr '26

24 Apr '26

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)

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MM#009 Default Target
by Max Millennium Chief Observer 23 Apr '26

23 Apr '26

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)

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MM#009 Default Target
by Max Millennium Chief Observer 22 Apr '26

22 Apr '26

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)

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MM#009 Default Target
by Max Millennium Chief Observer 21 Apr '26

21 Apr '26

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)

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MM#009 Default Target
by Max Millennium Chief Observer 20 Apr '26

20 Apr '26

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)

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MM#009 Default Target
by Max Millennium Chief Observer 19 Apr '26

19 Apr '26

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)

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