MMmotd

mmmotd@solar.physics.montana.edu

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 20 Apr '24

20 Apr '24

Dear Collaborators, Solar activity is at a low-to-moderate level. Target region NOAA 13647 Has remained stable in terms of sunspot area and number of spots since the last message, but has increased in primary spot separation while remaining classified as a beta/D-type sunspot group. This region has decreased in flaring activity, producing only a C2.5 on 20-Apr-2024 at 04:38 UT in the period. The most flaring region was instead NOAA 13638 (a beta/C-type sunspot group) that is located extremely close to NOAA 13647 (and 13645). NOAA 13638 produced eight C-class flares, the largest of which was a C4.8 on 20-Apr-2024 at 00:57 UT (also the largest in the period). The MM#003 Major Flare Watch will continue for a possibly final 24 hours. Further C-class flares are expected over the following 24-hour period, with a chance for M-class flares. The position of NOAA 13647 on 20-Apr-2024 at 15:30 UT is: S13W09 , ( 146", -132" ) 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, Shaun Bloomfield (Northumbria University)

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

19 Apr '24

Dear Collaborators, The level of solar activity is moderate. Target region NOAA 13645 grew in terms of sunspot area and number of spots since the last message, but simplified in magnetic classification to be reported as a beta/D-type sunspot group. Some of this decrease in magnetic complexity is due to some of polarities observed in that location yesterday now being identified as a new emerging sunspot region, designated as NOAA 13647 (a beta-delta/D-type group). Multiple C-class and three M-class flares have occurred from the vicinity of NOAA regions 13645 and 13647, the largest being an M2.1 flare on 19-Apr-2024 at 04:40 UT. The MM#003 Major Flare Watch remains in effect, with a minor shift in targeting coordinates to NOAA 13647, although NOAA 13645 should be kept within an observational field-of-view if possible. More M-class activity is expected in the next 24 hours, with a good chance for a >M5 flare. The position of NOAA 13647 on 19-Apr-2024 at 12:30 UT is: S10E05 , ( -84", -80" ) 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, Shaun Bloomfield (Northumbria University)

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

18 Apr '24

Dear Collaborators, Solar activity is at a moderate level. Target region NOAA 13639 was stable in terms of spot area and number of spots since the last message, remaining classified as a beta-gamma-delta/E-type sunspot group. This region has decreased significantly in both flaring frequency and peak flaring magnitude, producing only a C4.3 flare in the period (17-Apr-2024 at 20:51 UT). In contrast, newly numbered NOAA 13645 produced ten C-class and two M-class flares (M1.6 on 17-Apr-2024 at 21:55 UT and M1.3 on 18-Apr-2024 at 07:17 UT). This region was classified as a beta-gamma/C-type sunspot group at the start of the UT day, but now appears to be a D-type group with a potential delta spot. The largest flare in the period was an M2.2 on 18-Apr-2024 at 02:32 UT from NOAA 13638 (a beta/C-type group) that is located close to NOAA 13645 (and also NOAA 13637). The MM#003 Major Flare Watch continues, but the target switches to NOAA 13645. Additional low M-class flares are expected over the following 24-hour period, with a good chance for a >M5 flare. The position of NOAA 13645 on 18-Apr-2024 at 12:30 UT is: S10E17 , ( -278", -82" ) 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, Shaun Bloomfield (Northumbria University)

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

17 Apr '24

Dear Collaborators, The level of solar activity low-to-moderate. Target region NOAA 13639 grew in sunspot area and number of spots since the last message, and has now been reclassified as a beta-gamma-delta/E-type sunspot group. NOAA regions 13639 and 13634 (now a beta/D-type sunspot group) have both reduced in peak flaring magnitude, with only a C2.3 flare from NOAA 13634 (on 17-Apr-2024 at 04:43 UT) and nine C-class flares from NOAA 13639, with the largest being a C8.1 on 17-Apr-2024 at 03:13 UT. The largest magnitude flare in the period was an M1.1 from NOAA 13637 (a beta-delta/D-type sunspot group) on 16-Apr-2024 at 17:49 UT. The MM#003 Major Flare Watch will continue with NOAA 13639 as the target for another 24 hours. Further low M-class flares are possible in the next 24 hours, with a chance for an isolated >M5 flare. The position of NOAA 13639 on 17-Apr-2024 at 15:00 UT is: N29E28 , ( -394", 532" ) 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, Shaun Bloomfield (Northumbria University)

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

16 Apr '24

Dear Collaborators, Solar activity is at a moderate level. Target region NOAA 13639 has grown in sunspot area since the last message and been reclassified as a beta-gamma/C-type sunspot group (due to reduced levels of limb foreshortening). NOAA 13634 (a beta/E-type sunspot group) produced two M-class flares in the period with the largest being an M1.4 on 15-Apr-2024 at 14:01 UT. However, target NOAA 13639 was once again the most flare-productive region, being the source of five C-class and four M-class flares, the largest being an M4.0 on 15-Apr-2024 at 19:25 UT. The MM#003 Major Flare Watch will continue with NOAA 13639 as the target. More low M-class flares are probable over the following 24-hour period, with a chance for a >M5 flare. The position of NOAA 13639 on 16-Apr-2024 at 15:00 UT is: N30E40 , ( -534", 537" ) 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, Shaun Bloomfield (Northumbria University)

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

15 Apr '24

Dear Collaborators, The level of solar activity is moderate. Target region NOAA 13637 has remained stable since the last message, continuing to be classed as a beta/C-type sunspot group. The North East limb region that was a prior target for the #MM003 Major flare Watch has now been designated as NOAA 13639 and classed as a beta/C-type sunspot group, although its analysis before the start of the UT day will be affected by limb foreshortening. NOAA 13639 was again the most flare-productive region in the period by generating several C-class flares and three M-class flares, the largest being an M1.7 on 15-Apr-2024 at 01:06 UT. The overall greatest magnitude flare was an M2.3 on 15-Apr-2024 at 08:38 UT from NOAA 13634 (a beta/D- type sunspot group). At this point the MM#003 Major Flare Watch target switches back to NOAA 13639 due to its greater flaring frequency. More low M-class flares are probable in the next 24 hours, with a chance for a >M5 flare. The position of NOAA 13639 on 15-Apr-2024 at 13:00 UT is: N29E55 , ( -687", 509" ) 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, Shaun Bloomfield (Northumbria University)

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

14 Apr '24

Dear Collaborators, Solar activity has continued at a moderate level. Most flares over the past 24 hours came from the vicinity of the target. These regions have been numbered as NOAA 13637 and NOAA 13638. 13637 shows a higher magnetic complexity and has been classified as a beta/C-type sunspot group. It produced two flares, with the largest one being an M4.3 flare at 02:24 UT today. 13638 (alpha/H-type) only produced two low-C flares. Both regions are experiencing the emergence of new magnetic fluxes. Today the Major Flare Watch region shall remain with NOAA 13637 and NOAA 13638 (S17E66, if possible). Further C-class activities are expected with additional low-M flare probable in the following 24-48 hours. The position of NOAA 13637 on 14-Apr-2024 at 07:30 UT is: S11E62 (-830", -138") 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 13 Apr '24

13 Apr '24

Dear Collaborators, Solar activity has decreased to a moderate level. The southeast region (still unnumbered) near the limb became the most productive and was a source of multiple flares, with the largest magnitude being an M2.4 flare at 4:58 UT today. This region is in proximity to multiple sunspots that show mixed polarities. Today the Major Flare Watch region will switch to the southeast limb from the northeast limb. Yesterday’s target (N30E86) only produced two low-C flares. Further C-class activities are expected with a chance of a >M5 flare in the next 24 hours. The approximate position of the target on 13-Apr-2024 at 15:00 UT is: S10E89 (-950", -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, Qiao Li (Purple Mountain Observatory)

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

12 Apr '24

Dear Collaborators, Solar activity has grown to a high level. The largest event since the last message was a partially occulted M5.5 flare at 16:52 UT on 11-Apr-2024 from two unnumbered regions behind the east limb. This event was very eruptive and the two limb regions are connected by large trans-equatorial loops. At this point, we are implementing a Major Flare Watch on the limb region in the northeast quadrant. Please also include the southeast one (S18E88) if possible. Further C-class activities are expected with a good chance of another >M5 flare in the next 24 hours. The approximate position of the target on 12-Apr-2024 at 11:30 UT is: N17E87 (-950", 300") 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 11 Apr '24

11 Apr '24

Dear Collaborators, The level of solar activity has continued to increase. NOAA 13629 produced numerous low-C flares before it completely rotated over the west limb, with the largest being a C4.0 flare at 11:39 UT on 10-Apr-2024. The target region NOAA 13634 has shown signs of shearing and additional flux emergence and has been classified as a beta/B-type magnetic configuration, with a high and increasing current helicity. 13634 was also a source of six low-C flares. NOAA 13635 (N19E41, beta/B-type) to the west of 13634 and an unnumbered region (S15E88) also produced several low-C flares. Further C-class activities are expected with a low-M flare likely in the next 24 hours. The position of NOAA 13634 on 11-Apr-2024 at 11:30 UT is: N26E16 (-237", 503") 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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