Dear Collaborators,
Solar activity has been at a low level since the last message. Only two
~B1 flares were produced by NOAA 12791 that has decayed to a plage
region. The only region with sunspots on the visible solar disk is NOAA
12790. 12790 remains its alpha/H-type configuration and has been flare
quiet since the C7.4 flare. B-class flares are probable with a slight chance
of an isolated C-class event in the next 24 hours.
The position of NOAA 12790 on December 9 at 04:30 UT is:
S21W32 (483", -347")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
The target region NOAA 12790 was the source of a C7.4 flare
(at 12/07/15:46 UT) and also two ~B6 flares in the past 24 hours.
The C7.4 flare was associated with an Earth-directed halo CME.
12790 remains its alpha/H-type configuration and continues to
show mixed polarities in its intermediate portion. B-class flares
are expected with a chance of an isolated C-class event in the
following 24 hours.
The position of NOAA 12790 on December 8 at 04:30 UT is:
S22W18 (280", -365")
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,
Ying Li (Purple Mountain Observatory)
Dear Collaborators,
The largest X-ray event was a B8.3 flare (at 23:32 UT on December 6)
since the last message, which was produced by the target region NOAA
12790. NOAA 12791 (beta/B-type) also produced two B-class flares (a
B3.5 and a B3.6 on December 7). 12790 has been designated as an
alpha/H-type region and in its decay phase. We will watch this region for
a further 24 hours. B-class flares are expected in the next 24 hours.
The position of NOAA 12790 on December 7 at 04:30 UT is:
S23W05 (78", -383")
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,
Ying Li (Purple Mountain Observatory)
MM#009 Default Target
Dear Collaborators,
Target region 2790 (H-type/alpha) was the source of two
C-class events since the last message. The largest was
a C1.6 at 12/06/13:27 UT. Both events were associated
with the activation/eruption of the very dynamic small
filament located along the region's U-shaped main magnetic
inversion line. B-class events probable with another C-class
event possible in the next 24 hour period.
The position of NOAA 2790 on December 06 at 15:00 UT is:
S24E06 (Solar X = -093", Solar Y = -400")
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,
Bill Marquette (Helio Research)
MM#009 Default Target
Dear Collaborators,
Target region NOAA 2790 was the source of a
long duration C1.6 x-ray event at 12/05/00:38 UT.
The optical flare was associated with an active/eruptive
filament running along the region's U-shaped magnetic
inversion line. 2790 added a few tiny trailing polarity
spots in the past 24 hours. B-class events probable
with a slight chance of another C-class event in the
next 24 hour period.
The position of NOAA 2790 on December 05 at 11:00 UT is:
S23E20 (Solar X = -308", Solar Y = -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,
Bill Marquette (Helio Research)
MM#009 Default Target
Dear Collaborators,
The largest event since the last message was a C1.4 event
at 12/03/23:59 UT produced by target region NOAA 2790.
2790 decayed significantly losing its trailing polarity spots.
2790 is currently displaying an H-type/alpha sunspot group.
B-class events probable with a slight chance of another
C-class event in the next 24 hour period.
The position of NOAA 2790 on December 04 at 15:00 UT is:
S23E31 (Solar X = -463", Solar Y = -387")
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,
Bill Marquette (Helio Research)
MM#009 Default Target
Dear Collaborators,
Target region 2790 has decayed slightly since the last
message. A filament running along and south of the
region's main magnetic inversion line has been active
in the past 24 hours. 2790 was the source of a C1.2
event at 12/03/10:00 UT. NOAA 2786 produced the
largest event (C1.7 at 12/03/01:56 UT) in the past 24
hour period. B- and C-class events possible in the
next 24 hours.
The position of NOAA 2790 on December 03 at 11:45 UT is:
S24E45 (Solar X = -631", Solar Y = -403")
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,
Bill Marquette (Helio Research)
MM#009 Default Target
Dear Collaborators,
The target region is now numbered NOAA 2790. 2790
added a few small leading and trailing polarity spots
adjacent to the leader sunspot. 2790 was the source of
only two minor B-class events since the last message but
appears to have a somewhat unstable magnetic configuration.
The largest event in the past 24 hours was a C1.4 event
at 12/01/23:20 UT produced by NOAA 2786. B- and C-class
events possible in the next 24 hour period.
The position of NOAA 2790 on December 02 at 11:00 UT is:
S23E58 (Solar X = -762", Solar Y = -387")
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,
Bill Marquette (Helio Research)
MM#009 Default Target
Dear Collaborators,
The active region that was the source of the M4.4
event on November 29 at 13:15 UT has now completed
east limb passage. The region is currently displaying an
unimpressive C-type/beta sunspot group. It is likely the
region rapidly decayed after the M4 event. The region
produced several B-class events and two C-class events
since the last message. The largest was a C3.8 event at
12/01/04:27 UT. B- and C-class events probable with a
slight chance of an isolated M-class event.
The position of the target on December 01 at 11:00 UT is:
S23E73 (Solar X = -858", Solar Y = -384")
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,
Bill Marquette (Helio Research)
MM#003 Major Flare Watch
Dear Collaborators,
The target region produced a couple of minor limb occulted
B-class events since the last message. A single round
trailing polarity sunspot which is most likely the return of
old NOAA 2781 has completed east limb passage at S20
degrees. The long duration M4.4 event yesterday was the
strongest flare event of Cycle 25. There is a chance of
another M-class event in the next 48 hours.
The approximate position of the target on Nov. 30 at 09:30 UT is:
S24E89 (Solar X = -889", Solar Y = -396")
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,
Bill Marquette (Helio Research)