Dear RHESSI Collaborators,
Solar activity is low. The largest event since the last message
was a C1.2 at 02:48 UT on February 6 produced by the target
region NOAA 12494. 12494 has decayed to a D-type/beta-gamma
region but increasing in sunspot area and number of spots. It is
showing flux cancellation in the center of its leading positive spot,
also showing mixed polarities in its intermediate portion. It continues
to interact with the region NOAA 12491 (N02W06) through a filament.
Low level activities are expected in the next 24 hour period.
The position of NOAA 12494 on February 6 at 15:30 UT is:
S12W13 (Solar X = 214", Solar Y = -98")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity increased slightly in the past 24 hours. The target region,
now designated as NOAA 12494, was the source of numerous C-class
flares with the largest being a C5.1 at 18:15 UT on February 4. 12494
has been classified as a complex D-type/beta-gamma-delta magnetic
configuration. It is showing flux cancellation in its intermediate portion,
and interacting with the adjacent region NOAA 12491 (N02E07) between
high-lying loops. More low-to-mid C-class activities are possible in the
next 24 hours.
The position of NOAA 12494 on February 5 at 15:30 UT is:
S12W00 (Solar X = 0", Solar Y = -97")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity continues at ~C1 level. A few C-class events were
produced by various active regions. The largest event since the
last message was a C2.4 at 12:16 UT on February 4 from a newly
emerged region (S11E19). This new region developed rapidly in
the previous 24 hours and has produced three low C-class events
today. It will be today's target region. Further C-class activities are
expected in the next 24 hour period.
The approximate position of the target on February 4 at 15:30 UT is:
S11E16 (Solar X = -280", Solar Y = -120")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
The GOES soft X-ray flux has been at ~C1 level for the past 24
hours. Numerous B- and C-class events were produced by various
active regions. The largest event since the last message was a
C1.8 at 15:12 UT on February 3 from the limb (N05E81). Yesterday's
target region NOAA 12491, as well as NOAA 12492 (will be today's
target region), were classified as a beta/D-type magnetic configuration.
Both of them have the potential to produce further C-class flares. If
possible, also include the limb region (N05E81, namely the source of
the largest event) within your field of view. Low-to-mid level of C-class
activities are likely in the next few days.
The position of NOAA 12492 on February 3 at 19:30 UT is:
N15E48 (Solar X = -700", Solar Y = 318")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
The largest X-ray event in the past 24 hours was a C1.2 at 14:22 UT
on February 2 emanating from the northeast limb (N06E89). Target
region NOAA 12491 only produced several B-class events and now
has a beta/D-type sunspot group. 12491 is showing opposite-polarity
flux emergence in its leading portion. If possible, also include the yet-
unnumbered limb region (N14E74) within the field of view. Further
C-class activities are possible in the next 24 hour period.
The position of NOAA 12491 on February 2 at 18:30 UT is:
N01E46 (Solar X = -702", Solar Y = 88")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity is low with the largest event in the previous 24 hours
being a C1.6 at 01:09 UT on February 1 (seems from the east limb).
Yesterday's target region NOAA 12488 has rotated over the west limb.
There are currently three numbered active regions on the solar disk.
NOAA 12489 and 12490 produced several B-class flares but seem to
be stable. The newly numbered region NOAA 12491 appears to show
some potential of low C-class activity in the next few days.
The position of NOAA 12491 on February 1 at 15:30 UT is:
N02E61 (Solar X = -852", Solar Y = 83")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity is at a low level. The largest event since the last
message was a B9.1 at 21:20 UT on January 30 produced by
the target region NOAA 12488. 12488 also produced another
two B-class flares (B5.3 and B6.0). 12488 continues to decay
and is rotating over the west limb with some high-lying loops
above the limb. We will watch this region for one more day, and
may switch to a yet-unnumbered region at the northeastern limb
tomorrow. No significant activities are expected in the next 24
hour period.
The position of NOAA 12488 on January 31 at 15:30 UT is:
N04W91 (Solar X = 970", Solar Y = 65")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
The level of solar activity remains low. There was an isolated
and long-duration C-class flare (C2.0 at 20:48 UT on January 29)
emanating from the limb region NOAA 12486 (has rotated over
the west limb). The flare was related to a filament eruption, also
accompanied by a standard CME toward to the southwest direction.
The target region NOAA 12488 only produced several low-level
B-class events and now has decayed to a beta/D-type region.
Only very low level activities are possible in the next 24 hours.
The position of NOAA 12488 on January 30 at 18:35 UT is:
N04W79 (Solar X = 954", Solar Y = 86")
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 (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity is at low levels. NOAA 12488 was the source of four
C-class flares (the largest being a C3.5 at 7:57 UT on January 29)
and several B-class flares since the last message. 12488 has
developed a complex beta-gamma magnetic configuration in the
past 24 hours. We will switch back to NOAA 12488. Additional
C-class activities are expected in the following one or two days
when 12488 is rotating over the west limb.
The position of NOAA 12488 on January 29 at 15:35 UT is:
N04W64 (Solar X = 874", Solar Y = 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,
Ying Li (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
Solar activity has increased significantly in the past 24 hours.
NOAA 12488 (N03W50) showed a resurgence and produced
the largest event, a C9.6 flare at 11:48 UT on January 28, and
also produced another two C-class flares (C5.3 & C2.8). The
target region NOAA 12489 seems to be quiet since the last
message, but it has the potential to produce some activities.
12489 has developed some magnetic complexity with a beta/
D-type sunspot group increasing in spot area significantly. It is
showing flux emergence in its leading portion. Further C-class
flares are likely in the next 24 hours.
The position of NOAA 12489 on January 28 at 15:35 UT is:
N10E18 (Solar X = -297", Solar Y = 260")
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 (Nanjing University / Montana State University)