MM#009 Default Target

Max Millennium Chief Observer mmchiefobserver at gmail.com
Sun Jul 18 14:28:10 MDT 2021


Dear Collaborators,

The level of solar activity is very low. The target region has been
designated as NOAA 12845 and was classified as a beta/B-type sunspot
group at the start of the UT day. NOAA 12845 continued producing low
B-class flares for a while after yesterday's message, but it ceased
when the region stopped emerging new flux. NOAA 12843 displayed the
greatest frequency and magnitude of flaring in the period (with the
largest being a B9.7 on 18-Jul-2021 at 06:56 UT), but 12843 has now
rotated over the South West limb. High-lying loops from another new
region are now visible over the North East limb, with STEREO-A EUV
images showing it to be a compact coronal loop system. This region
has already produced three B-class flares of increasing magnitudes
(B1.6, B2.2, and B3.8 on 18-Jul-2021 at 10:14, 16:54, and 19:32 UT,
respectively), all three of which are footpoint occulted (i.e., the
true peak flare magnitudes would be greater). This region becomes
the new target, with B-class activity expected and a strong chance
for a C-class flare over the following 24-hour period as the region
rotates over the North East limb.

The approximate position of this region on 18-Jul-2021 at 20:30 UT is:

N25E90 , ( -855", 397" )

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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