MMmotd March 2023

mmmotd@solar.physics.montana.edu

1 participants
32 discussions

MM#009 Default Target
by Max Millennium Chief Observer 21 Mar '23

21 Mar '23

Dear Collaborators, Solar activity has diminished slightly since the last message. The largest event in the period was a C5.2 flare at 03/20/09:24 UT from the target region NOAA 13256 (S20E32, beta/E-type). The neighbouring regions NOAA 13257 (S27E47, beta/D-type) and 13259 (S21E39, beta/C-type) also produced several low C-class flares during the period. Today the target will continue on NOAA 13256 due to high current helicity and magnetic complexity along with its nearby regions. More C-level activities are expected in the next 24 hours, with a slight chance for low M-class flares. The position of NOAA 13256 on 21-Mar-2023 at 12:30 UT is: S20E32 (-481", -234") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 20 Mar '23

20 Mar '23

Dear Collaborators, Solar activity has increased to a moderate level since the last message. The largest event was an M1.3 flare at 01:19 UT today produced by the target region NOAA 13256 (S22E49). 13256 retains a beta/E-type configuration and also produced 4 C-class flares in the period. Today the target shall remain on this region. Moreover, the nearby region NOAA 13257 (S27E63, alpha/H-type) has remained active and also produced several low C-class flares during the period. If possible, please also include NOAA 13257 in your field of view. More C-class activities are expected in the following 24-48 hours, with a chance for additional low M-class flares. The position of NOAA 13256 on 20-Mar-2023 at 08:30 UT is: S22E49 (-675", -286") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 19 Mar '23

19 Mar '23

Dear Collaborators, Solar activity is at a moderate-to-low level since the last message. The largest event in the period was a C4.5 flare at 06:30 UT today from the target region NOAA 13256 (S22E61, beta/E-type). 13256 was also the source of other seven low C-class flares. The target will continue on this region. Please note that the nearby limb region is rotating onto the visible solar disk and has been numbered as NOAA 13257 (S27E77) with a beta/D-type configuration, which also produced eight low C-class flares in the period. Therefore, please also include NOAA 13257 in your field of view if possible. Further C-class activities are expected over the next 24 hours, with a slight chance for low M-class flares. The position of NOAA 13256 on 19-Mar-2023 at 08:30 UT is: S22E61 (-783",-305") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 18 Mar '23

18 Mar '23

Dear Collaborators, Solar activity has been at a moderate level since the last message. The largest event was an M1.1 at 03/17/15:04 UT produced by NOAA 13254 (S24W76, beta/B-type). 13254 also produced a C7.3 flare and is rotating to the west limb. Today the target will continue on the east limb region that has been numbered as NOAA 13256 with an alpha/H-type sunspot group. 13256 produced three C-class flares, the largest one being a C9.4 at 03/18/07:10 UT. If possible, please also include the nearby limb region (S25E86) in your field of view, which has also produced three C-class flares. More C-class activities are expected with a chance for low M-class flares in the next few days. The position of NOAA 13256 on 18-Mar-2023 at 12:30 UT is: S21E66 (-823", -298") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 17 Mar '23

17 Mar '23

Dear Collaborators, Solar activity has increased slightly since the last message. The southeast limb target (unnumbered yet) is rotating onto the visible solar disk and has produced six C-class flares, including two C6.4 flares that erupted at 06:12 UT and 06:45 UT today. The target will continue on this region. More C-class flares are expected in the next 24 hours, with a chance for a low M-class flare. The approximate position of the target on 17-Mar-2023 at 08:30 UT is: S19E83 (-905", -298") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 16 Mar '23

16 Mar '23

Dear Collaborators, Solar activity continues at a very low level since the last message, with the GOES soft X-ray flux flat at ~C1 in general. Yesterday's target region NOAA 13254 (S25W48, beta/C-type) and the neighbouring NOAA 13250 (S19W42, alpha/A-type) only produced two B8 flares and have shown signs of decay during the period. Two C1-class flares occurred in a spotless region (N23W21) located in the northwest to NOAA 13252 (N13W14, alpha/A-type). Please note that there were two high B-class flares from behind the southeast limb in the period and the dynamic loops are visible in EUV images. The target shall switch to this currently unnumbered region at the southeast limb. C-class flares are expected over the next 24 hours. The approximate position of the target on 16-Mar-2023 at 08:30 UT is: S20E87 (-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, De-Chao Song, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 15 Mar '23

15 Mar '23

Dear Collaborators, Solar activity is at a very low level since the last message. The largest event in the period was a C1.2 flare on 14-Mar-2023 at 22:16 UT produced by NOAA 13254 (beta/C-type) which produced another C1 and also a high B-class flares. The target region will stay on NOAA 13254. Please note that NOAA 13250 (S18W32, beta/B-type) also produced a C1.1 flare in the period. If possible, please also include NOAA 13250 in your field of view. Further C-class events are likely in the following 24 hours. The position of NOAA 13254 on 15-Mar-2023 at 16:30 UT is: S24W38 (544", -303") 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 14 Mar '23

14 Mar '23

Dear Collaborators, Solar activity has continued at low levels since the last message. Yesterday's target region NOAA 13245 (S23W64) was quiescent during the period and has been downgraded to an alpha/H-type sunspot group. The largest event in the past 24 hours was a C3.0 flare at 05:52 UT today produced by NOAA 13250 (S18W15, beta/D-type) which was also the source of another C1 flare. The nearby region NOAA 13253 (S29W22) was more active, producing one high B- and two low C-class flares today, with emerging new sunspots in the period. 13253 continues to undergo positive flux emergence and shall be the new target. If possible, please also include NOAA 13250 in your field of view. Further C-class activities are expected in the following 24 hours. The position of NOAA 13253 on 14-Mar-2023 at 12:30 UT is: S29W22 (317", -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, De-Chao Song, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 13 Mar '23

13 Mar '23

Dear Collaborators, Solar activity remains at a low level. The largest event since the last message was a C3.1 flare at ~09:50 UT today from a quiet-Sun region (between NOAA 13252 and 13246) in the northern hemisphere due to a filament eruption. The target region NOAA 13245 has been stable, maintaining a beta/C-type sunspot group. Only C-class activities are likely in the next 24 hours. The position of NOAA 13245 on March 13 at 12:30 UT S23W51 (692", -304") 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 12 Mar '23

12 Mar '23

Dear Collaborators, The level of solar activity is low. Target region NOAA 13245 has remained stable since the last message, maintaining a beta/C-type sunspot group designation. NOAA 13245 continued to produce C-class activity in the form of two C1 flares, while the largest flare in the period was a C3.2 on 12-Mar-2023 at 07:02 UT from a small flux region between and to the South of NOAA regions 13247 and 13250. The target will stay on NOAA 13245 for now. Further C-class flares are expected over the following 24-hour period. The position of NOAA 13245 on 12-Mar-2023 at 18:30 UT is: S23W41 , ( 585", -291" ) 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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MMmotd March 2023