MMmotd July 2023

mmmotd@solar.physics.montana.edu

1 participants
31 discussions

MM#009 Default Target
by Max Millennium Chief Observer 31 Jul '23

31 Jul '23

Dear Collaborators, Solar activity continues at a moderate level with events from both NOAA 13380 and NOAA 13390 since the last message. Despite its small sunspot area NOAA 13390 was the source of an M1.7 flare at 08:42 UT today. It retains its beta/C-type configuration and shall continue as the target region with further C- and low M-level activity possible over the next 24 hours. The position of NOAA 13390 on 31-Jul-2023 at 07:30 UT is: S19E42, ( -599", -372" ) 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, Ryan Milligan (Queen's University Belfast)

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

30 Jul '23

Dear Collaborators, The level of solar activity is moderate. Target region NOAA 13390 has been re-classified as a beta/C-type sunspot group with having rotated further on disk. NOAA 13380 (a beta/D-type) was the source of an M1.4 flare on 29-Jul-2023 at 16:11 UT, but the target region NOAA 13390 produced a double-peaked M-class event where both X-ray peaks reached M1.8 (each flare starting on 30-Jul-2023 at 08:01 UT and 08:18 UT). C-class activity is expected over the following 24 hours, with M-class flares also likely. The position of NOAA 13390 on 30-Jul-2023 at 13:00 UT is: S19E51 , ( -695", -362" ) 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 29 Jul '23

29 Jul '23

Dear Collaborators, Solar activity is at a moderate level. Target region NOAA 13388 has been stable since the last message, remaining classified as a beta/C-type sunspot group. Old region NOAA 13376 produced the largest magnitude flare in the period from beyond the North West limb (an M4.1 on 28-Jul-2023 at 15:39 UT), but is now completely out of view. Newly numbered region NOAA 13390 (an alpha/H-type) has already produced four mid-to-high C-class events, with the largest being a C9.2 flare on 29-Jul-2023 at 10:18 UT. Further C-class flares are expected in the next 24-hour period, with a chance for a low M-class flare. The position of NOAA 13390 on 29-Jul-2023 at 13:00 UT is: S18E63 , ( -801", -331" ) 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 28 Jul '23

28 Jul '23

Dear Collaborators, The level of solar activity is low-to-moderate. Target region NOAA 13376 has now rotated over the North West limb, with only some of its highest-lying loops still visible. This region was the source of multiple mid-to-high C-class flares since the last message. The target will however switch to NOAA 13388 that rotated on disk over the South East limb in the last 48 hours. NOAA 13388 is classified as only a beta/C-type sunspot group, but was the source of an M1.7 flare on 28-Jul-2023 at 22:04 UT - the largest magnitude flare in the period. More C-class activity is expected over the following 24 hours, with a good chance for another low M-class flare. The position of NOAA 13388 on 28-Jul-2023 at 11:00 UT is: S23E56 , ( -723", -414" ) 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 27 Jul '23

27 Jul '23

Dear Collaborators, Solar activity is at a moderate level. Target region NOAA 13376 remains designated as a beta/D-type sunspot group, but has now rotated up to the North West limb so classification is uncertain. NOAA 13376 continued to be the most flare-productive region in the period with being the source of multiple C-class flares and two M-class events, which included the largest magnitude flare (an M2.0 on 26-Jul-2023 at 15:50 UT and an M1.9 on 27-Jul-2023 at 09:44 UT). Continued C-class flaring is expected in the next 24 hours, with a good chance for additional low M-class flares while the coronal loops of NOAA 13376 remain visible above the North West limb. The position of NOAA 13376 on 27-Jul-2023 at 12:00 UT is: N23W90 , ( 869", 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, Shaun Bloomfield (Northumbria University)

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MM#009 Default Target
by Max Millennium Chief Observer 26 Jul '23

26 Jul '23

Dear Collaborators, The level of solar activity is moderate. Target region NOAA 13376 has continued to emerge new magnetic flux since the last message, but remains classified as a beta/D-type sunspot group because its proximity to the North West limb prevents accurate classification. NOAA 13380 (beta/C-type) produced an M-class flare in the period (an M1.6 on on 25-Jul-2023 at 21:08 UT), while target region NOAA 13376 produced two M-class events including the largest magnitude flare (an M1.2 and M4.6 on 26-Jul-2023 at 04:21 UT and 10:17 UT, respectively). Additional C-class activity is expected over the following 24-hour period, with a good chance for further M-class activity as NOAA 13376 rotates up to the limb. The position of NOAA 13376 on 26-Jul-2023 at 14:30 UT is: N23W76 , ( 844", 348" ) 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 25 Jul '23

25 Jul '23

Dear Collaborators, Solar activity is at a low-to-moderate level. Target region NOAA 13380 was stable in terms of sunspot area since the last message and has been confirmed as a beta/C-type sunspot group now that it is fully on disk. This region was the source of low C-class activity in the period while NOAA 13376 produced a C-class flare and the largest magnitude flare, an M1.5 on 25-Jul-2023 at 01:36 UT. NOAA 13376 has undergone a significant episode of flux emergence and consolidation over the past 48 hours to evolve from an alpha/H-type sunspot group into a compact beta/D-type, so it becomes the new default target region. Further C-class flaring is expected in the next 24 hours, with a chance for another M-class flare. The position of NOAA 13376 on 25-Jul-2023 at 13:00 UT is: N23W60 , ( 755", 328" ) 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 24 Jul '23

24 Jul '23

Dear Collaborators, The level of solar activity is low. Target region NOAA 13373 decayed slightly in terms of sunspot area over the past 24 hours, but it has remained a beta/E-type sunspot group classification. Both NOAA 13372 (a beta/C-type group) and NOAA 13373 produced C-class flares in the period. However, the new region rotating over the South East limb - now designated as NOAA 13380 - has again produced C-class activity. This new region (NOAA 13380) has not completely rotated its trailing spots onto the visible disk, but it appears to have at least a beta magnetic classification and its main leading spot has a well-formed mature penumbra (so either a C- or D-type Zurich classification). The default target switches to NOAA 13380. More C-class activity is expected over the following 24-hour period, with a chance for a low M-class flare. The position of NOAA 13380 on 24-Jul-2023 at 11:00 UT is: S11E63 , ( -827", -218" ) 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 23 Jul '23

23 Jul '23

Dear Collaborators, Solar activity has been at a very low level since the last message. The largest event during the period was a C7.2 flare at 14:47 UT on July 23 from NOAA 13372. 13372 (N25W75, beta/E-type) is rotating over the west limb. The target region NOAA 13373 (beta/E-type) was only the source of a C1.7 flare. We will continue on this region for a further 24 hours. Please note that a southeast limb region (S13E76, unnumbered yet) produced three C2 flares. C-class activities are expected from various regions with a slight chance of a low M-class flare in the next 24 hours. The position of NOAA 13373 on July 23 at 19:30 UT N08W55 (767", 83") 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#009 Default Target
by Max Millennium Chief Observer 22 Jul '23

22 Jul '23

Dear Collaborators, Solar activity was at a moderate level in the past 24 hours. The largest event was an M3.2 flare at 03:12 UT on July 22 from NOAA 13372. 13372 also produced three C-class flares in the period. This region retains a beta/E-type configuration. The target region NOAA 13373 was the source of an M1.0 flare at 04:12 UT on July 22 and also two C-class flares (C2.3 and C9.9). 13373 has decayed to a beta/E-type region but is still emerging new magnetic fluxes in its leading portion. Today the target will continue on this region. C-class activities are expected with some chance of a low M-class flare in the next 24 hours. The position of NOAA 13373 on July 23 at 03:30 UT N08W45 (663", 73") 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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MMmotd July 2023