MMmotd June 2026

mmmotd@solar.physics.montana.edu

1 participants
31 discussions

MM#009 Default Target
by Max Millennium Chief Observer 21 Jun '26

21 Jun '26

Dear Collaborators, Solar activity has increased to a moderate level. Yesterday's target rotated from the Southeast limb produced two M class flares since the last message: a M1.0 at 14:54 UT yesterday(6/20) and a M2.6 at 2:25 UT today, the latter was the largest event in the period. This region, now assigned to NOAA 14473, is also the source of several high-B to mid-C class events in the last 24 hours. The leading (Western) portion of this region consists of multiple small spots with mixed polarity, while the Eastern portion appears to be a single large spot with negative polarity (still too close to the limb to describe further). Today, we will continue to observe NOAA 14473 at the leading portion of sunspots where the M2.6 flares are from. Additional C class to low-M class events are expected. The position of the target in NOAA 14473 on 21-Jun-2026 at 15:30 UT is: S08E57 (-790.", -155"). 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 20 Jun '26

20 Jun '26

Dear Collaborators, Solar activity has slightly increased since the last message due to the activities from the regions rotated from the Southeast limb. The largest event in the period was an M1.3 flare at 01:26 UT today (6/20) from the region rotated from the Southeast limb yesterday, now assigned the number, NOAA 14472. There is another region rotated from the limb at the latitude of ~8 degrees South, which has been our default target since yesterday. This yet-unnumbered region produced several flares including 2 C1.9 flares (at 11:15 UT and another at 12:06 UT) today, while NOAA 14472 has kept quiet after the M1.3 flare. Today, we will continue to observe the unnumbered region from the Southeast limb at ~8 degrees South, expecting additional C class activities. The position of the target from the Southeast limb on 20-Jun-2026 at 15:00 UT is: S08E75 (-901.", -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, Aki Takeda (Montana State University) --

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

19 Jun '26

Dear Collaborators, Solar activity remains low since the last message. The largest event in the 24 hours was a C1.3 flare at 21:49 UT yesterday (6/18) from behind the Southeast limb at ~9 degrees. Several high-B class events were reported from the regions behind the Southeast limb extended from 5 to 25 degrees South. A small sunspot rotated from the limb at ~13 degrees South but so far not showing flare activity. NOAA 14465 approaching the Southwest limb produced 3 high-B class flares, while yesterday's target, NOAA 14470 has been flare-quiet in the last 24 hours with slightly decreased sunspot area. Today, we will observe the Southeast limb region, the current brightest area at ~8 degrees South, as the default target. Additional high-B to low-C class flares are expected. The position of the target on the Southeast limb on 19-Jun-2026 at 16:00 UT is: S08E84 (-929.", -143"). 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 Jun '26

18 Jun '26

Dear Collaborators, Solar activity continues to be low since the last message. The largest event in the period was a C2.0 flare at 11:42 UT today (6/18) produced by NOAA 14470. This region is also the source of another C class flare (C1.0 at 07:38 UT) and several B-class events in the last 12 hours. Yesterday's target, NOAA 14465 only produced two high-B class flares. A newly emerged bi-polar sunspots in the Northeast quadrant is not assigned a number yet, but produced two B class flares yesterday. Today, we will switch the target back to NOAA 14470 due to the recent flare history. We will observe the area of its following sunspots with mixed polarity. Additional high-B to low-C class events are expected. The position of the target in NOAA 14470 on 18-Jun-2026 at 16:00 UT is: N07E48 (-699", 108"). 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 Jun '26

17 Jun '26

Dear Collaborators, Solar activity remains at a low level since the last message. The largest event in the period is a C2.5 flare at 14:57 UT today(6/17) from NOAA 14464 behind the Southwest limb. Yesterday's target from the Northeast limb was assigned a number, NOAA 14470 and classified as a beta type. This region appears to have settled slightly and has been flare-quiet in the last 24 hours. The previous target, NOAA 14465 is showing a sign of further decay but has produced a few high-B to low-C class flares since the last message. Today, we will switch the target back to NOAA 14465 to observe further activities during its decaying process. Additional high-B to low-C class events are expected. The position of the target in NOAA 14465 on 17-Jun-2026 at 16:00 UT is: N06W43 (643", 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, Aki Takeda (Montana State University) --

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MM#009 Default Target
by Max Millennium Chief Observer 16 Jun '26

16 Jun '26

Dear Collaborators, Solar activity has been very low since the last message. The largest event in the period was a C1.9 flare at 18:46 UT yesterday(6/15) from the Northeast limb region yet unnumbered. This region also produced a few additional high-B to low-C class flares in the past 24 hours and has begun to progress onto the solar disk. Yesterday's target, NOAA 14465 has now been re-classified as a beta-gamma type, but has been flare-quiet, after a C1.8 flare at 13:12 UT yesterday. Today we will switch the default target to the unnumbered region rotated from the Northeast limb, because of the recent flare history. Additional high-B to low-C flares are expected. The position of the target on 16-Jun-2026 at 15:30 UT is: N07E74 (-902", 110"). 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 15 Jun '26

15 Jun '26

Dear Collaborators, Solar activity remains low since the last message. Two C1.7 events are the largest in the period; one at 01:50 UT today(6/15) from the target region, NOAA 14464 and the other at 09:48 UT today from the region behind the Northeast limb (~N08 deg). NOAA 14464 is showing sign of decay losing trailing sunspots, while the Northeast limb region has produced a few more low-C class activities in the past several hours. NOAA 14465 (N07W18) has been undergoing flux emergence since yesterday; new spots were added in its Southeast and also Northwest vicinities. Although currently no flare is reported from NOAA 14465, these new spots are occasionally showing brightening. Today, we will switch the default target from NOAA 14464 to NOAA 14465 to keep track of these flux emergence, until the Northeast limb region rotates to Earth-view. In the next 24 hours, we will observe NOAA 14465 at the Southeast side of the main sunspot expecting C-class events. The position of the target in NOAA 14465 on 15-Jun-2026 at 16:00 UT is: N06W16 (272", 92"). 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 14 Jun '26

14 Jun '26

Dear Collaborators, Solar activity has continued at a low level. The largest event was a C2.5 flare at 12:40 UT yesterday from a plage region located at S21W82. Additionally, NOAA 14462 (N16W83) produced two C1.0 flares and a B6.8 flare, while NOAA 14466 (N06W81) produced a B8.2 flare and a C1.5 flare. However, these three regions have rotated nearly beyond the west limb. The target region, NOAA 14464, produced a B9.1 flare at 10:40 UT today and still retains a beta/D-type sunspot group. Therefore, today the target will remain at 14464. Low-C flares are probable over the following 24 hours. The position of NOAA 14464 on 14-Jun-2026 at 11:30 UT is: S13W51 (716", -222") 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 Jun '26

13 Jun '26

Dear Collaborators, Solar activity has dropped to a low level. An unnumbered region near the southeast limb (S05E80) produced the largest event, a C1.9 flare at 18:42 UT yesterday, and a C1.0 flare. NOAA 14464 produced a C1.8 flare at 02:00 UT today and two ~C1 flares. This region has been classified as a beta/D-type sunspot group. Yesterday’s target, NOAA 14465 (beta/C-type, N09E07), only produced a C1.4 flare. Today, the target will switch from 14465 to 14464. Additional low-C flares are probable over the following 24 hours. The position of NOAA 14464 on 13-Jun-2026 at 11:30 UT is: S13W36 (542", -223") 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 Jun '26

12 Jun '26

Dear Collaborators, Solar activity has remained at an intermediate level. The target region NOAA 14465 produced two ~C1 flares, with the largest being a C5.2 flare at 02:04 UT today. Although this region retains a beta-gamma/D-type classification, it has begun to show magnetic signs of fragmentation and decay. Today, the target will remain with 14465, considering its magnetic complexity and prior flaring history. Note that an unnumbered region (S09E89) was also the source of three ~C1 flares. More low-C flares are expected over the next 24 hours. The position of NOAA 14465 on 12-Jun-2026 at 11:30 UT is: N09E23 (-365", 138") 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 June 2026