MMmotd August 2026

mmmotd@solar.physics.montana.edu

1 participants
32 discussions

MM#009 Default Target
by Max Millennium Chief Observer 31 Aug '26

31 Aug '26

Dear Collaborators, Solar activity remains at a very low level. Yesterday's target region NOAA 14517 produced only one B6.8 flare since the last message and is now almost entirely over the west limb. The largest event during the period was a C2.6 flare at 08/31/15:09 UT from NOAA 14520 (S12W01; beta/D-type). This region also produced two additional ~C1 flares during the period. Today, we will switch the target region to NOAA 14520. In addition, an unnumbered active region near the east limb (N18E87) produced two ~C1 flares and one B8.6 flare during the period. Additional C-class activity is expected in the following 24 hours. The position of NOAA 14520 on August 31 at 15:30 UT is: S12W01 (16",-313") 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, De-Chao Song (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 30 Aug '26

30 Aug '26

Dear Collaborators, Solar activity remains at a very low level. The largest event since the last message was a C2.2 flare at 08/30/16:41 UT from the previous target NOAA 14513 (N04W70) that retains a beta/D-type configuration. The target region NOAA 14517, having a beta/E-type sunspot group, was flare quiet during the period. It is rotating over the west limb. Today we will continue to watch this region, for a final 24 hours. If possible, please also include NOAA 14513 in the field of view. Additional C-class activity is expected in the following 24 hours. The position of NOAA 14517 on August 30 at 19:30 UT is: N09W84 (933", 135") 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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MM#009 Default Target
by Max Millennium Chief Observer 29 Aug '26

29 Aug '26

Dear Collaborators, Solar activity continues at a very low level. The largest event since the last message was a C3.0 flare at 01:10 UT today from a northeast limb region (N11E88). NOAA 14517 was the source of two C1 flares plus five high B-class flares, which has a beta/ E-type configuration. Today we will switch the target to NOAA 14517. The previous target NOAA 14513 (N04W60) has been downgraded to a beta/D-type region, decreasing in the sunspot area and number of spots significantly. Additional C-class activity is expected from NOAA 14517 and also the northeast limb region. The position of NOAA 14517 on August 30 at 03:30 UT is: N09W74 (902", 115") 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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MM#009 Default Target
by Max Millennium Chief Observer 28 Aug '26

28 Aug '26

Dear Collaborators, Solar activity has been at a very low level. The target region NOAA 14513 only produced a C1.1 flare at 04:12 UT today, plus three high B-class flares. 14513 has been reclassified as a complex beta-gamma-delta configuration but it continues to decrease in the sunspot area and number of spots. Additional C-class activity is expected in the following 24-hour period. The position of NOAA 14513 on August 28 at 07:30 UT is: N04W33 (517", -32") 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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MM#009 Default Target
by Max Millennium Chief Observer 27 Aug '26

27 Aug '26

Dear Collaborators, Solar activity has dropped over the past 24 hours. The target region NOAA 14513 only produced an M1.0 flare at 12:06 UT yesterday, plus five C-class flares. 14523 has been downgraded to a beta-gamma/D-type region, decreasing in the sunspot area and number of spots. Today we will end the Major Flare Watch campaign but continue to watch NOAA 14513. C-class activity is expected with some chance of low M-class flare in the next 24 hours. The position of NOAA 14513 on August 27 at 07:30 UT is: N04W21 (340", -43") 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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MM#003 Major Flare Watch
by Max Millennium Chief Observer 26 Aug '26

26 Aug '26

Dear Collaborators, After the M6.9 flare yesterday, the target region NOAA 14513 produced an M2.2 flare at 06:29 UT today, plus two ~C1.5 flares. 14513 retains a beta-gamma-delta/E-type region and increases the sunspot area. Today we will continue the Major Flare campaign. Additional low M-class activity is expected with some chance of another major flare above M5 in the following days. The position of NOAA 14513 on August 26 at 07:30 UT is: N04W08 (132", -49") 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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MM#003 Major Flare Watch
by Max Millennium Chief Observer 25 Aug '26

25 Aug '26

Dear Collaborators, Following the 4 low-M class events reposted in the previous message, an M6.9 flare was produced at 9:32 UT today (8/25) from the target region, NOAA 14513. An SolarSoft movie of this event is available at https://www.lmsal.com/solarsoft/archive/sdo/media/ssw/ssw_client/data/ssw_s… At this time, we will implement the Major Flare Watch campaign on NOAA 14513. The area of leading sunspots is forming a sharp boundary of opposite polarity magnetic field patches, which is the main source of a series of M class events. Further flare activities of M class or larger are expected in the next 24 hours. The position of the target in NOAA 14513 on 25-August-2026 at 15:30 UT is: N03E28 (-35", -59"). 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 25 Aug '26

25 Aug '26

Dear Collaborators, Solar activity has increased since the last message. The target region NOAA 14513 was the source of four low M-class flares, the largest one being an M2.0 at 08/25/01:04 UT, eight low C-class, and two high B-class flares during the period. 14513 has been reclassified as a beta-gamma- delta/E-type region. Further low M-class activity is expected in the coming 24 hours. The position of NOAA 14513 on August 25 at 07:30 UT is: N04E06 (-99",-49") 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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MM#009 Default Target
by Max Millennium Chief Observer 24 Aug '26

24 Aug '26

Dear Collaborators, Solar activity continues at a low level. The largest event since the last message was a C3.5 flare at 08/23/21:47 UT, produced by the target region NOAA 14513. 14513 also produced another three low C-class flares plus one B9.3 flare. It has been designated as a beta-gamma/E-type configuration, but increasing in the sunspot area and number of spots. Today we will continue to watch this region. Further C-class activity is expected in the next 24 hours. The position of NOAA 14513 on August 24 at 07:30 UT is: N04E21 (-340", -42") 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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MM#009 Default Target
by Max Millennium Chief Observer 23 Aug '26

23 Aug '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 C4.2 flare at 6:24 UT today (8/23) produced by the target region, NOAA 14513. This region also produced a few low-C class flares in the last 24 hours. All these flares were initiated around the main leading sunspot with positive polarity, but slightly different locations that are connected with different nearby patches of negative polarity. Today, we will continue to observe NOAA 14513, at the central portion of the two leading sunspots with different polarities, the source of the C4.2 flare. The position of the target in NOAA 14513 on 23-August-2026 at 15:30 UT is: N03E28 (-455", -50"). 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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