Dear Collaborators,
Solar activity continued to be low since the last message. The largest event in the past 24 hours was a C5.1 flare at 00:02 UT today(7/21) from NOAA 14143. This region is classified as a beta-gamma/D-type and has slightly increased its area and sunspot numbers from yesterday. The target region, NOAA 14136 produced a C6.5 flare at 15:28 UT yesterday, but quieted down as it approached the Northwest limb. Another notable source of flares was NOAA 14149 in the Northeast quadrant, having produced 2 low-C class flares in the past 24 hours but also quieted during the recent 12 hours.
Today, we will observe NOAA 14143 as the default target, because of its magnetic complexity and increased size. We will observe the Northern part of its trailing (negative polarity) sunspot where the C5.1 flare was from, expecting additional C class activities.
The position of the target in NOAA 14143 on 21-July-2025 at 15:00 UT is: N26W67 (782", 386").
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) --
mmmotd@solar.physics.montana.edu