MMmotd

mmmotd@solar.physics.montana.edu

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MM#009 Default Target
by Max Millennium Chief Observer 05 Sep '23

05 Sep '23

Dear Collaborators, The level of solar activity is moderate. Target region NOAA 13421 has increased in number of spots and spot area since the last message. This region has increased in spot maturity to display penumbrae on both polarity spots, changing it to a beta/D-type sunspot group. NOAA 13421 continued to be the most flare-productive region, including being the source of the largest magnitude flare in the period - an M2.0 flare on 5-Sep-2023 at 08:03 UT. Further C-class activity is expected in the next 24 hours, with a chance for more M-class flares. The position of NOAA 13421 on 5-Sep-2023 at 16:00 UT is: N15W09 , ( 141", 130" ) 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#009 Default Target
by Max Millennium Chief Observer 04 Sep '23

04 Sep '23

Dear Collaborators, Solar activity is now at a moderate-to-low level. Target region NOAA 13413 has now rotated over the North West limb. Following the last message NOAA 13413 only produced low C-class flares. Newly-numbered NOAA region 13421 (a beta/B-type sunspot group) has emerged new flux to form several spots through the period, becoming the most flare-productive region on disk. At this time we end the MM#003 Major Flare Watch, with the target changing to NOAA 13421. Additional C-class flares are expected over the following 24-hour period, with a small chance for a low M-class flare. The position of NOAA 13421 on 4-Sep-2023 at 18:00 UT is: N15E04 , ( -66", 129" ) 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 03 Sep '23

03 Sep '23

Dear Collaborators, Solar activity has reached a high level since the last message. The target region NOAA 13413 has produced multiple flares, the largest being an M6.0 flare at 08:09 UT today. Although this region rotates towards the northwest limb, it retains its beta/D-type magnetic configuration. 13413 shall continue as the target region, but we are issuing a Major Flare Watch alert at this time before it completely rotates beyond the west limb. Further low M-class activities are expected with the increased possibility of another partially occulted >M5 flare within the next 24 hours. The position of NOAA 13413 on 3-Sep-2023 at 11:30 UT N10W91 (936",165") 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 02 Sep '23

02 Sep '23

Dear Collaborators, Solar activity has slightly increased for the past 24 hours, with an M3.4 flare at 06:33 UT today produced by the target region NOAA 13413. 13413 was still classified as a beta/D-type magnetic configuration. Today the target shall still be this region. Please note that a spotless region (S21E45) also produced several flares, the largest being C7.4. Further C-class activities are expected, with additional moderate-level activity possible in the following 24-hour period. The position of NOAA 13413 on 2-Sep-2023 at 11:30 UT N10W83 (929", 149") 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 01 Sep '23

01 Sep '23

Dear Collaborators, Solar activity has reached moderate levels since the last message. The target region NOAA 13413 has produced three consecutive M1 flares (M1.0, M1.2, M1.2) beginning at 02:20 UT today. This region was also the source of several C1 flares. It retains its beta/D-type sunspot group with an apparent increase in sunspot area. 13413 shall continue as the target due to its high frequency of flaring and high current helicity. Please note that NOAA 13415 (S09W51, beta/D-type) also produced two B-class flares. Further C-class activities are expected with a chance for another low-M flare in the next 24-48 hours. The position of NOAA 13413 on 1-Sep-2023 at 11:30 UT N09W69 (877",105") 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 31 Aug '23

31 Aug '23

Dear Collaborators, Solar activity continues at low levels. The largest event since the last message was a C3.0 flare at 23:20 UT on 30-Aug-2023 from NOAA 13413. 13413 was also the source of a C1.5 flare and it retains its beta/D-type magnetic configuration. Today the target shall switch to NOAA 13413. Yesterday’s target NOAA 13417 (S05E39, beta/D-type) was quiescent in the period. In addition, NOAA 13415 (S09W38, beta/D-type) and two plage regions (S26W11, N17W49) also produced a few low-C flares. B-class activities are expected with low C-class flares probable in the next 24 hours. The position of NOAA 13413 on 31-Aug-2023 at 11:30 UT N09W55 (770", 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, Qiao Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 30 Aug '23

30 Aug '23

Dear Collaborators, Solar activity has been at low levels for the past 24 hours. The largest event was a C4.0 flare at 23:17 UT on 29-Aug-2023 from NOAA 13417. 13417 also produced a C1.7 plus a B9.9 flares. This region was classified as a beta/C-type with mixed polarities in the leading portion. Today the target region shall switch to NOAA 13417. Yesterday’s target (still unnumbered, N21E81) was the source of 2 C1 flares and 2 B-class flares but it has a low and decreasing current helicity. In addition, NOAA 13413 (N09W43, beta/D-type) and NOAA 13415 (S10W26, beta-gamma/D-type) also produced a C1.3 plus a B8.4 flares. Additional C-class activities are likely from various active regions with a slight chance of a low M-class flare in the following 24 hours. The position of NOAA 13417 on 30-Aug-2023 at 11:30 UT S07E54 (-764", -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, Qiao Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 29 Aug '23

29 Aug '23

Dear Collaborators, Solar activity has increased since the last message. The largest event was a C2.3 flare at 23:54 UT on 28-Aug-2023 produced by a northeast limb region (unnumbered yet). This region was the most flare-productive for the source of multiple low-C and B-class events. Today the target region shall switch to the limb region. Yesterday’s target NOAA 13413 (N10W32, beta-delta/D-type) only produced 3 C1 flares. NOAA 13417 (S08E68, beta/D-type) and NOAA 13416 (S19E21, alpha/H-type) also produced several C1 flares. More C-class activities are expected with a slight chance of a low M-class flare in the next 24-hour period. The approximate position of the target on 29-Aug-2023 at 11:30 UT N22E87 (-900", 350") 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 28 Aug '23

28 Aug '23

Dear Collaborators, Solar activity continues at a very low level. The largest event was a C1.0 flare at 03:54 UT today from NOAA 13405, which is almost rotating beyond the west limb. Yesterday’s target (S05E89) was quiescent in the period. NOAA 13413 on the disk retains its beta/D-type magnetic configuration and has increased in sunspot area and counts. Today the target region shall switch to NOAA 13413. B-class activities are expected with low C-class flares probable in the next 24 hours. The position of NOAA 13413 on 28-Aug-2023 at 11:30 UT N10W20 (321", 55") 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 27 Aug '23

27 Aug '23

Dear Collaborators, Solar activity has been at moderate-to-low levels. The largest event was a long-duration M1.1 flare at 21:30 UT on 26-Aug-2023 from a southeast limb region (unnumbered yet). Today the target region shall switch to this region. Yesterday’s target (NOAA 13405) was only the source of a few low-C flares with magnetic signs of decay. More C-class activities are probable in the next 24 hours with a slight chance of another low M-class flare. The approximate position of the target on 27-Aug-2023 at 11:30 UT S06E90 (-959", -93") 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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