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MM#009 Default Target
by Max Millennium Chief Observer 20 May '24

20 May '24

Dear Collaborators, Solar activity has been at a low level since the last message. The largest event in the past 24 hours was a C6.7 at 05:42 UT yesterday produced by NOAA 13683 (S24W74, beta/D-type), which was associated with a filament eruption. The target region NOAA 13685 retains a beta-gamma/E-type configuration but decreases in the sunspot area. 13685 only produced a C2.2 flare during the period. While the nearby region NOAA 13686 (S06E23, beta/C-type) produced three low C-class flares. At this moment we end the Major Flare Watch campaign, remaining 13685 as the target, but please also include 13686 in your field of view if possible. C-class activities are expected with some chance of an M-class flare in the next 24 hours. The position of NOAA 13685 on May 21 at 03:30 UT is: S12E13 (-209", -167") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 19 May '24

19 May '24

Dear Collaborators, Solar activity was at a moderate level. There were three ~M2 flares produced by the target region NOAA 13685, with the largest one being an M2.5 at 17:47 UT on May 19. 13685 retains a beta-gamma/ E-type configuration but increases in the sunspot area and number of spots. We will continue the Major Flare Watch campaign today with 13685 as the target. Additional M-class flares including a >M5 one are possible in the next two days. The position of NOAA 13685 on May 20 at 03:30 UT is: S13E27 (-420", -184") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 18 May '24

18 May '24

Dear Collaborators, Solar activity has been at a low level since the last message. The largest event in the period was a C7.2 at 05:32 UT on May 18 from NOAA 13679 (S08W07, beta-gamma/E-type). The target region NOAA 13685 only produced two C4 flares. It has been designated as a beta-gamma/E-type configuration with an increase in the sunspot area. This region is emerging magnetic flux in its leading portion. We will continue the Major Flare Watch campaign today. C-class activities are expected with a chance of a major (>M5) flare in the next 24-48 hours. The approximate position of NOAA 13685 on May 19 at 01:00 UT is: S13E42 (-600", -200") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 17 May '24

17 May '24

Dear Collaborators, Solar activity has been at low-to-moderate levels. The largest event since the last message was an isolated M7.3 flare at 20:33 UT on May 17 produced by the target region NOAA 13685. 13685 has split into two regions with the other one numbered as NOAA 13686. 13685 retains a beta-gamma/D-type configuration but increases in the sunspot area. The Major Flare Watch will continue today with 13685 as the target, but if possible, please also include 13686 (S07E64, alpha/H-type) in your field of view. Additional M-class flares including a >M5 flare are likely in the next 24-48 hours. The position of NOAA 13685 on May 18 at 03:30 UT is: S13E48 (-688", -189") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 16 May '24

16 May '24

Dear Collaborators, Solar activity has been at moderate-to-low levels. The largest event in the previous 24 hours was an M1.0 flare at 07:50 UT on May 16 from the limb target region. This limb region also produced three ~C5 flares in the period. It has been designated as NOAA 13685 with a beta-gamma/D-type configuration. The Major Flare Watch campaign will continue today with 13685 remaining as the target. Please note that NOAA 13679 (S09E18, beta-gamma/E-type) also produced four ~C4 flares. Further C-class activities are expected with a good chance of M-class flares in the next few days. The position of NOAA 13685 on May 16 at 23:30 UT is: S13E64 (-820", -200") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 15 May '24

15 May '24

Dear Collaborators, Solar activity continues at a high level. The largest event in the past 24 hours was an X3.5 flare at 08:18 UT on May 15 produced by yesterday's limb target NOAA 13664. 13664 also produced an M3.6 and a C9.9 flares when it was beyond the west limb. Today we will continue the Major Flare Watch campaign but the target switches to a southeast limb region (unnumbered yet) that has produced an X3.0 flare at 14:20 UT on May 15 plus two M3 flares. M-class activities are expected with a chance of some X-class flare in the next 24-48 hours. The approximate position of the target on May 15 at 23:30 UT is: S12E86 (-900", -200") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 14 May '24

14 May '24

Dear Collaborators, Solar activity was at a high level in the past 24 hours. The largest event since the last message was an occulted X8.7 flare at 16:46 UT on May 14 produced by the target limb region NOAA 13664. This X8.7 is also the largest event in the solar cycle 25 so far. Besides, 13664 produced another X1.7 and X1.2 flares plus numerous M-class flares. Today we will continue the Major Flare Watch campaign for one more day. Please note that some other regions also produced several M-class flares, e.g., an M1.1 from 13674 (beta/C-type), an M4.5 from 13680 (beta/D-type), an M1.3 from 13679 (beta-gamma/D-type). M-class flares are very likely though from various regions in the next 24 hours. The position of NOAA 13664 on May 14 at 23:30 UT is: S19W91 (896", -309") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 13 May '24

13 May '24

Dear Collaborators, Solar activity has been at a high-to-moderate level. The largest event since the last message was an X1.0 flare at 16:11 UT on May 12 from the target region NOAA 13664. 13664 also produced more than ten M-class flares including an M6.7 flare at 09:36 UT on May 13. Today we will continue the Major Flare Watch campaign on this region when it is rotating over the west limb. Further M-class flares are expected with a chance of an occulted major (>M5) flare in the next 24 hours. The position of NOAA 13664 on May 13 at 23:30 UT is: S19W89 (897", -307") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 12 May '24

12 May '24

Dear Collaborators, Solar activity has partially diminished since the last message. However, several significant flares were produced, the largest being an X1.5 from NOAA 13664 at 11:15 UT yesterday. NOAA 13664 has begun its transit of the southwest limb and is still showing signs of significant magnetic flux. The Major Flare Watch will continue with NOAA 13664 as the target region. Further M-class activity is likely with a chance for an additional isolated >M5 flare in the next 24 hours. The position of NOAA 13664 on 12-May-2024 at 11:30 UT is: S18W69, (844",-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#003 Major Flare Watch
by Max Millennium Chief Observer 11 May '24

11 May '24

Dear Collaborators, Solar activity remains at a high level. NOAA 13664 produced a number of substantial flares in the last 24 hours, the largest being an X5.8 at 01:10 UT today. NOAA 13664 has grown significantly to reach an approximate size of 2400 μh. The Major Flare Watch will continue with NOAA 13664 as the target region as it begins to approach the southwest limb. Additional M-class activity is expected, with a chance for further >M5 flares in the next 24 hours. The position of NOAA 13664 on 11-May-2024 at 07:30 UT is: S17W52, (717",-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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