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mmmotd@solar.physics.montana.edu

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5745 discussions

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

19 May '26

Dear Collaborators, Solar activity has been at a low level since the last message. The largest event in the last 24 hours was a C2.1 flare at 7:29 UT today(5/19) from the plage in the north part of NOAA 14436. NOAA 14436 also produced a C1.9 flare (at 18:10 on 5/18) and several high-B class flares from the southeast side of the main sunspot. A bright region from the Northeast limb is coming into our view, but currently not showing flare activity. Today we will continue to observe NOAA 14436, on the Southeast side of the main sunspot. The position of the target in NOAA 14436 on 19-May-2026 at 15:30 UT is: N17W57 (764", 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, Aki Takeda (Montana State University) --

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MM#009 Default Target
by Max Millennium Chief Observer 18 May '26

18 May '26

Dear Collaborators, Solar activity has declined to a low level since the last message. The largest event in the last 24 hours was a C9.7 flare at 20:42 UT yesterday (5/17) produced by NOAA 14436. This region also produced 5 high-B class flares, while yesterday's target, NOAA 14432 rotated behind the limb without showing further flare activity. Today our default target will be switched to NOAA 14436, on the East side of the main sunspot. The position of the target on 18-May-2026 at 15:00 UT is: N18W43 (626", 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, Aki Takeda (Montana State University) --

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MM#009 Default Target
by Max Millennium Chief Observer 17 May '26

17 May '26

Dear Collaborators, Solar activity has reached a moderate level. Four low-M flares were produced by NOAA 14436 and the target region NOAA 14435. 14436 (N19W33) produced an M1.9 flare and an M1.3 flare yesterday, which has decreased in magnetic complexity to alpha/H-type. 14435 has retained its highest productivity, producing an M2.0 at 17:39 UT yesterday and an M1.4 at 03:29 UT today. Today, the target will remain with the looptops of NOAA 14435 for the final 24 hours. Further C-class activity is expected, with a low-M flare likely in the next 24 hours. The position of NOAA 14435 on 17-May-2026 at 11:30 UT is: N22W91 (878", 354") 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)

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MM#009 Default Target
by Max Millennium Chief Observer 16 May '26

16 May '26

Dear Collaborators, Solar activity has continued at an intermediate level. The target region NOAA 14435 produced four flares, including the largest being a C9.5 at 16:05 UT yesterday. This region has been classified as a beta-gamma/D-type sunspot group, though it is nearing the west limb. Today, the target will remain with NOAA 14435 for a further 24 hours. Additional low-C activity is possible in the coming 24 hours. The position of NOAA 14435 on 16-May-2026 at 11:30 UT is: N22W88 (878", 356") 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)

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MM#009 Default Target
by Max Millennium Chief Observer 15 May '26

15 May '26

Dear Collaborators, Solar activity has remained at an intermediate level. The largest event since the last message was a C6.7 flare at 13:10 UT today from the target region NOAA 14435. This region has retained its high productivity and has developed into a beta-gamma/D-type sunspot group. Today the target shall remain at 14435. Note that NOAA 14438 (N20W51, beta/D-type) also produced six low-C flares. Further C-class activity is expected in the next 24 hours. The position of NOAA 14435 on 15-May-2026 at 11:30 UT is: N22W73 (842", 367") 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)

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MM#009 Default Target
by Max Millennium Chief Observer 14 May '26

14 May '26

Dear Collaborators, Solar activity has increased to an intermediate level since the last message. The largest event was a C5.5 flare at 06:31 UT today, produced by NOAA 14435. This region has become the most productive and has increased in magnetic complexity, now being classified as a beta/C-type. Yesterday’s target NOAA 14432 produced four low-C flares as it rotated out of earth view. Today NOAA 14435 becomes the new target. Further C-class activity is expected in the coming 24 hours. The position of NOAA 14435 on 14-May-2026 at 11:30 UT is: N23W62 (772", 390") 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)

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MM#009 Default Target
by Max Millennium Chief Observer 13 May '26

13 May '26

Dear Collaborators, Solar activity has remained at a low level. NOAA 14432 continues to be the most productive region, producing numerous <=C2.1 flares, and retains its beta-gamma/E-type magnetic configuration. Yesterday’s target, NOAA 14436, has been downgraded to a beta/C-type configuration and produced only a few ~C2 flares. Today we shall end the Major Flare Watch campaign, and the default target shall switch back to NOAA 14432. Additional low-C flares are expected in the next 24 hours. The position of NOAA 14436 on 13-May-2026 at 15:30 UT is: N14W91 (920", 228") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 12 May '26

12 May '26

Dear Collaborators, Solar activity has returned to a low level since the last message. NOAA 14432 (N14W74, beta-gamma/E-type) has maintained its high productivity, producing eleven <C2 flares. The target region NOAA 14436 has been classified as a beta-gamma/D-type, although it has become flare-quiet during the period. Today, the Major Flare Watch will remain active for a final 24 hours with NOAA 14436. The low-C activity is expected, with a slight chance for an >M5 flare in the coming 24 hours. The position of NOAA 14436 on 12-May-2026 at 07:30 UT is: N19E37 (-542", 347") 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)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 11 May '26

11 May '26

Dear Collaborators, Solar activity has reached a high level due to an eruptive M5.8 flare at 13:19 UT yesterday from NOAA 14436. This region has been classified as beta/D-type. At this point, we are implementing a Major Flare Watch on 14436. Yesterday’s target NOAA 14432 (N14W60, beta‑gamma/E-type) has produced multiple low‑C and B-class flares, showing significant magnetic flux emergence. Additional C-class activity is expected, with the possibility of another >M5 from 14436 within the next 48 hours. The position of NOAA 14436 on 11-May-2026 at 07:30 UT is: N19E51 (-699", 340") 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)

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MM#009 Default Target
by Max Millennium Chief Observer 10 May '26

10 May '26

Dear Collaborators, Solar activity has continued at a low level. The target region, NOAA 14432, has remained the most productive, producing 14 low-C flares and the largest being a C3.8 at 09:32 UT today. Significant new spots emerged in this region, which retains a beta/D-type magnetic configuration. Today, the target shall remain on NOAA 14432. Further C-class activity is expected, with a low-M flare likely in the following 24 hours. The position of NOAA 14432 on 10-May-2026 at 11:30 UT is: N14W49 (697", 263") 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)

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