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Subject: MM#009 Default Target" -->
Date: Sun, 18 Jul 2021 21:28:10 +0100
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) Received on Sun Jul 18 2021 - 14:28:30 MDT
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