MMmotd April 2022

mmmotd@solar.physics.montana.edu

1 participants
30 discussions

MM#003 Major Flare Watch
by Max Millennium Chief Observer 20 Apr '22

20 Apr '22

MM#003 Major Flare Watch Dear Collaborators, The active region complex (NOAA 2993/2994) target increased its spot count, spot area, and also somewhat increased its magnetic complexity but the target will switch to the southwestern limb where NOAA 2992 is located beyond the limb. It produced a limb occulted X2.2 event at 04/20/03:57 UT. 2992 also produced an M7.2 event at 04/20/01:36 UT. 2992 developed rapidly on and beyond the west limb during the past few days where it was impossible to ascertain its magnetic configuration. 2992 could produce another major flare in the next 24 hours. 2993/2994 could also produce a major flare. The position of NOAA 2992 on April 20 at 13:00 UT is: S34W89 (Solar X =-792", Solar Y = -531") 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, Bill Marquette (Helio Research)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 19 Apr '22

19 Apr '22

MM#003 Major Flare Watch Dear Collaborators, The active region complex target NOAA 2993/2994 was the source of several minor C-class events and an isolated M1.0 at 04/19/04:50 UT. The flare was located in the southern portion of 2993 and the northern portion of 2994 in a cluster of small spots. Both 2993 and 2994 are now classified as having beta-gamma magnetic configurations. The largest event since the last message was an isolated M1.9 at 04/18/17:24 UT produced by the small southwestern limb region NOAA 2992. We will continue the Major Flare Watch on 2993/2994 for another 24 hour period. An event =>M5 is still possible. The position of NOAA 2993/2994 on April 19 at 14:45 UT is: N17E45 (Solar X = -648", Solar Y = 338") 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, Bill Marquette (Helio Research)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 18 Apr '22

18 Apr '22

MM#003 Major Flare Watch Dear Collaborators, Target regions NOAA 2993/2994 have been mostly unchanged. 2993 produced an M1.1 event at 04/18/10:27 UT. 2994 only produced minor C-class events. The largest event since the last message was a M4.4 event at 04/17/22:34 UT. The source was NOAA 2992 (S31W83). 2992 is a small region that developed new flux that resulted in forming a small magnetic delta configuration. 2994 is displaying a large E-type/beta sunspot group with a possible delta configuration located within the trailing sunspot. 2993 currently has a D-type/beta sunspot group. We will continue the Major Flare Watch for at least the next 24 hour period. An isolated =>M5 is possible with a slight chance of another X-class flare in the next 24 hours. The position of NOAA 2993/2994 on April 18 at 10:45 UT is: N17E60 (Solar X = -793", Solar Y = 321") 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, Bill Marquette (Helio Research)

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MM#003 Major Flare Watch
by Max Millennium Chief Observer 17 Apr '22

17 Apr '22

Dear Collaborators, The limb target region has been designated as NOAA 12993 and 12994 which are still too close to the east limb to obtain their configurations accurately. These two regions produced two ~M1 flares (12993) as well as an X1.1 flare (at 04/17/03:17 UT, 12994) in the past 24 hours. Today we will implement the Max Millennium coordinated observing plan #003 (Region Likely To Produce A Major Flare). Additional low M-class flares are expected with a chance of another major flare (above M5) in the next few days. The positions of NOAA 12993 and 12994 on April 17 at 07:30 UT are: N22E71 (-838", 384") and N14E71 (-877", 259") 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 16 Apr '22

16 Apr '22

Dear Collaborators, Solar activity has been at a moderate level. The limb target region was the source of three low M-class flares (the largest one being an M2.2 at 04/15/11:07 UT) and six C-class flares. This region is rotating onto the visible solar disk. More C-class activities are expected and further M-class flares are likely in the next few days. The approximate position of the target on April 16 at 07:30 UT is: N19E87 (-900", 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, Ying Li (Purple Mountain Observatory)

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MM#009 Default Target
by Max Millennium Chief Observer 14 Apr '22

14 Apr '22

Dear Collaborators, Solar activity has increased slightly since the last message. There were three low C-class flares emergent from a region that is still beyond the northeast limb. Today the target will switch to this limb region. Yesterday's target NOAA 12989 was flare quiet during the period. Additional C-class activities are expected in the following 24 hours. The approximate position of the target on April 15 at 03:30 UT is: N18E90 (-940", 180") 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 14 Apr '22

14 Apr '22

Dear Collaborators, Solar activity has been at a very low level with the soft X-ray flux flat at ~B3. In the past 24 hours there was only a B2.8 flare produced by a newly emerged region, as numbered as NOAA 12990 (N16E45). 12990 has a beta/B-type sunspot group and is located close to the target NOAA 12989. If possible, please also include 12990 in your field of view. 12989 has been classified as a beta/B-type configuration. B-class activities are expected with some chance of a C-class flare in the next 24 hours. The position of NOAA 12989 on April 14 at 03:30 UT is: N18E58 (-772", 342") 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 Apr '22

12 Apr '22

Dear Collaborators, Yesterday's target NOAA 12983 was the source of seven C-class flares (the largest one being a C3.8 at 04/12/06:38 UT) and also a few B-class events in the past 24 hours. 12983 has rotated beyond the west limb. Today the target will switch to a newly numbered region NOAA 12989. This region has an alpha/A-type configuration but has produced a B-class flare. It seems to be emerging new magnetic fluxes in its leading portion. B-class activities are expected with a chance of some low C-class events in the following 24 hours. The position of NOAA 12989 on April 13 at 03:30 UT is: N19E71 (-856", 339") 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 11 Apr '22

11 Apr '22

Dear Collaborators, Solar activity continues at a very low level. The largest event in the past 24 hours was a C1.6 flare at 04/11/04:59 UT emergent from a plage region (S14E06, just in the north of NOAA 12987). Now there are two regions with sunspots on the visible disk, NOAA 12983 and 12988, the latter of which is a newly emerged region having a beta/B-type configuration. The target NOAA 12983 has decayed to an alpha/A-type region and produced four B-class flares during the period. We will watch this region for a further 24 hours until it rotates over the west limb. B-class activities are expected and some C-class flares are probable in the next 24 hours. The position of NOAA 12983 on April 12 at 03:30 UT is: N20W85 (895", 333") 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 10 Apr '22

10 Apr '22

Dear Collaborators, Yesterday's target regions NOAA 12978/12981 were the source of two ~B5 flares. Since both the regions have completed the west limb passage, today the target will switch to NOAA 12983, the only region with sunspots on the visible solar disk. 12983 produced a B4.0 flare today and has a beta/D-type configuration. B-class activities are expected with a chance of C-class flare in the next 24 hours. The position of NOAA 12983 on April 11 at 03:30 UT is: N21W75 (863", 365") 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 April 2022