MMmotd August 2026

mmmotd@solar.physics.montana.edu

1 participants
29 discussions

MM#009 Default Target
by Max Millennium Chief Observer 19 Aug '26

19 Aug '26

Dear Collaborators, Solar activity has increased to a moderate level since the last message. The largest event in the period was a C5.0 flare at 4:45 UT today (8/19) produced by the region behind the Northeast limb at the latitude of ~5 degrees. This yet unnumbered region produced another ~C5 class flare (C4.9 at 13:27 UT today) and several low-C class flares since later yesterday. This region should be closely monitored, but the observation is limited due to its proximity to the limb. The target region, NOAA 14507, slightly increased its size and magnetic complexity from yesterday and was re-classified as a beta-gamma-delta type. This region produced 8 C class flares with the largest being a C3.9 at 2:51 UT today. In the next 24 hours, the target will remain at NOAA 14507 because of the magnetic complexity retained. We will continue to observe the Northwest extension of the trailing sunspot, Additional C-class events are expected. The position of the target in NOAA 14507 on 19-August-2026 at 16:00 UT is: N03W60 (825", 4"). 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 18 Aug '26

18 Aug '26

Dear Collaborators, Solar activity has slightly reduced since the last message. The largest event in the period was a C4.0 flare at 6:40 UT yesterday (8/18) produced by the target region, NOAA 14507. This region also produced a C3.2 flare at 17:42 UT yesterday, while NOAA 14510 and its adjacent region, NOAA 14506 showed several low-C class activities in the last 24 hours. NOAA 14507 is undergoing further flux emergence in its trailing portion that increases magnetic complexity of this area. Today we will continue to observe NOAA 14507, at the Northwest extension of the trailing sunspot, expecting additional C-class events. The position of the target in NOAA 14507 on 18-August-2026 at 16:00 UT is: N03W46 (690", -19"). 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 17 Aug '26

17 Aug '26

Dear Collaborators, Solar activity has been at a low to moderate level since the last message. The largest event in the period was a C8.2 flare at 19:10 UT yesterday(8/16) produced by NOAA 14506. This region increased magnetic complexity, now classified as a beta-gamma type. 14506 is the source of several other C class flares since the last message, but somewhat settled after the C8.2 event. The target region, NOAA 14507, continued to grow in size and magnetic complexity to be reclassified as a beta-gamma/E-type region. This region produced 9 low-C class flares in the last 24 hours. Another source of flares (2 low-Cs) was NOAA 14510 where new sunspots emerged at its original trailing area. Today we will continue to observe NOAA 14507, at the central portion with mixed polarities. Additional C-class events are expected. The position of the target on 17-August-2026 at 15:30 UT is: N03W35 (550", -33"). 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 16 Aug '26

16 Aug '26

Dear Collaborators, Solar activity has continued at low-C levels since the last message. Most flares originated from the target region NOAA 14507 and NOAA 14506. 14507 produced ten flares, the largest of which was a C3.7 event at 03:13 UT today. This region continues to show the emerging mixed magnetic fluxes in its intermediate portion and retains a beta/D-type sunspot classification. 14506 (N11W38, beta/D-type) generated seven low-C flares, with signs of shearing and additional flux emergence. Today, the target will remain at 14507, with 14506 included if possible. More low-C activities are expected in the next 24 hours. The position of NOAA 14507 on 16-Aug-2026 11:30 UT is: N04W22 (355", -36") 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 15 Aug '26

15 Aug '26

Dear Collaborators, Solar activity has remained at low-C levels since the last message. NOAA 14508 (N07E20, beta/C-type) generated the largest events being a C4.3 at 21:45 UT yesterday and a C3.3 at 08:09 UT today. The target region NOAA 14507 has increased in spot area and number, now classified as a beta/D-type sunspot group. This region produced a C2.1 flare at 13:30 UT today. Moreover, NOAA 14506 (N11W24, beta/B-type) also was the source of two ~C1 flares, with the emergence of new magnetic fluxes. Today the target shall continue at 14507 (with 14506 included). Further B-class activity is expected, with a chance of additional low-C flares in the coming 24 hours. The position of NOAA 14507 on 15-Aug-2026 11:30 UT is: N04W07 (115", -43") 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 14 Aug '26

14 Aug '26

Dear Collaborators, The level of solar activity has increased since the last message. NOAA 14503 (S17W60, beta/C-type) produced the largest flare, a C4.1 at 06:38 UT today. NOAA 14507 has continued to develop and is now classified as a beta-gamma/D-type. It has produced seven mid-to-high B-class flares. Today the target will switch back to 14507. Yesterday’s target has been designated NOAA 14511, but it remained flare-quiet during the period. Further B-class activity is expected, with a chance of low-C flares in the next 24 hours. The position of NOAA 14507 on 14-Aug-2026 11:30 UT is: N04E08 (-132", -42") 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 13 Aug '26

13 Aug '26

Dear Collaborators, Solar activity has dropped to a mid-B level. The largest event was a B7.4 flare at 02:02 UT today produced by an unnumbered region near the southeast limb. This region also produced two additional mid-B flares, making it the most active area on the disk. Accordingly, today's target shall switch to this limb region, while yesterday’s target, NOAA 14507 (N04E22, beta/D-type), only produced a B5.4 flare at 10:52 UT today. Further B-class activity is expected over the following 24 hours. The approximate position of the target on 13-Aug-2026 11:30 UT is: S10E85 (-930", -160") 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 12 Aug '26

12 Aug '26

Dear Collaborators, Solar activity has remained at a low level in the last 24 hours. The largest event during this period was a C2.5 flare at 22:55 UT yesterday, originating from the newly emerged active region NOAA 14507. This region was also the source of a C1.7 plus five mid-B flares. It has been classified as a beta/C-type magnetic configuration. Yesterday’s target, NOAA 14505, has completely rotated out of Earth view. Today, the target shall switch to 14507 from 14505. In addition, NOAA 14508 (N06E63, alpha/H-type) contributed several flares below C1.7. Further B-class activity is expected, with additional low-C flares likely within the coming 24 hours. The position of NOAA 14507 on 12-Aug-2026 11:30 UT is: N04E36 (-556", -20") 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 11 Aug '26

11 Aug '26

Dear Collaborators, Solar activity has grown to a ~C2 level over the past 24 hours. The target region NOAA 14505 produced the largest event, a C2.4 flare at 12:34 UT yesterday. Additionally, this region also generated a C1.0 and two mid-B flares. 14505 was designated as a beta/D-type magnetic configuration, as it transited beyond the northwest limb. Today, the target will remain with the looptops of NOAA 14505. B-class and low-C activities are probable in the next 24 hours. The position of NOAA 14505 on 11-Aug-2026 11:30 UT is: N15W91 (913", 245") 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 10 Aug '26

10 Aug '26

Dear Collaborators, The level of solar activity has increased since the last message. The largest event was a C1.8 flare at 16:30 UT yesterday from the newly emerged active region NOAA 14505. This region has been the most productive, producing four ~C1 and eight mid-to-high B-class flares. It has been classified as a beta/B-type sunspot group. Today, 14505 becomes the new target. B-class activity is expected, with additional low-C flares likely over the following 24 hours. The position of NOAA 14505 on 10-Aug-2026 11:30 UT is: N16W86 (907", 252") 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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MMmotd August 2026