Dear RHESSI Collaborators,
Solar activity has been at a moderate level. An M1.5 event was
produced by a new region (unnumbered yet) just rotating onto the
visible disk at 09/20/04:55 UT. Yesterday's target region NOAA
12415 (S19W50) was the source of three low C-class events in
the previous 24 hours. 12415 remains its beta-gamma/E-type
sunspot group with increasing in spot area slightly. Although 12415
is capable of producing further C-class activities, we will watch the
new region on the east limb today. Additional M-class activity is
probable in the next few days.
The position of the target on September 20 at 16:00 UT is:
N09E83 (Solar X = -920", Solar Y = 150")
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 returned to a very low level. The largest event
since the last message was a B8.2 at 09/18/21:34 UT produced
by the target region NOAA 12415. 12415 remains classified as a
beta-gamma/E-type sunspot group but decreasing in spot area and
number of spots. It continues to show flux emergence in its leading
portion. B-class activity is expected with a chance of some C-class
activity.
The position of NOAA 12415 on September 19 at 14:35 UT is:
S19W38 (Solar X = 557", Solar Y = -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,
Ying Li (Nanjing University / Montana State University)
Dear RHESSI Collaborators,
The target region NOAA 12415 has produced 10 C-class flares since
the last message. The largest event was a ~C6 at 09/17/21:12 UT. The
C2 flare at 09/18/04:45 UT was also accompanied by a CME. NOAA
12415 is now classified as a beta-gamma/E-type sunspot group with
increasing in spot area and number of spots. 12415 is showing some
opposite-polarity flux emergence in its leading portion. Further C-class
activity is expected with a chance of an isolated M-class event.
The position of NOAA 12415 on September 18 at 14:35 UT is:
S20W25 (Solar X = 380", Solar Y = -426")
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 flare activity has increased in the past 24 hours. The
target region NOAA 12415 was the source of 10 C-class
flares (including a C9.5 at 09/17/02:52 UT) as well as an
M1.1 event at 09/17/09:34 UT. 12415 is reclassified as a
D-type/beta-gamma magnetic configuration with increasing
in spot area and number of spots. It continues to display
mixed polarities both in its intermediate and leading portions.
Further C-class activity is expected, with a chance of additional
low level M-class event in the next 24 hours.
The position of NOAA 12415 on September 17 at 12:30 UT is:
S20W09 (Solar X = 140", Solar Y = -436")
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 target region NOAA 12415
produced two C1 as well as two C3 events in the past 24 hours.
Another region NOAA 12414 (S10W82) also produced a C1 flare.
NOAA 12415 remains its beta-gamma/C-type sunspot group. It
is showing some mixed polarities in its leading portion. Additional
C-class activity is expected in the next 24 hour period.
The position of NOAA 12415 on September 16 at 14:35 UT is:
S22E05 (Solar X = -77", Solar Y = -466")
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 is low. Target region NOAA 12415
has produced 6 low C-class flares (the largest being a C1.3
at 09/15/05:12 UT) and 8 high level B-class flares since the
last message. 12415 remains its beta-gamma magnetic
configuration with increasing in number of spots but decreasing
its spot area slightly. 12415 is undergoing flux emergence in
its leading portion. Further C-class activity is expected in the
next 24 hours.
The position of NOAA 12415 on September 15 at 14:35 UT is:
S22E19 (Solar X = -288", Solar Y = -460")
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 very low levels. There were four B-class
flares (the largest being a B5.7 at 09/14/00:37 UT) produced by
NOAA 12415 since the last message. NOAA 12415 is now classified
as a beta-gamma/D-type sunspot group with increasing in spot area
and number of spots. Yesterday's target region NOAA 12414 has been
downgraded to a beta region and flare quiet in the previous 24 hours.
A new region at the southeastern limb is rotating onto the visible disk
with the potential to produce some X-ray events. Further B-class activity
is expected, with a good chance for C-class activity in the next 24 hours.
The position of NOAA 12415 on September 14 at 14:35 UT is:
S22E32 (Solar X = -469", Solar Y = -449")
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 remains at a very low level. NOAA 12415 underwent some
growth in the past 24 hours, but has maintained a beta/D-type sunspot
group classification and produced no notable X-ray flares. Yesterday's
target NOAA 12414 has continued to grow in sunspot area over the past
24 hours. This region maintained its beta-gamma/D-type classification
and was the source of 2 B-class flares (the largest being a B6.4 event
on 13-Sep-2015 at 04:15 UT). More B-class activity is expected, with a
good chance for an isolated C-class flare.
The position of NOAA 12414 on 13-Sep-2015 at 12:30 UT is:
S11W41, ( 615", -270" )
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 (Trinity College Dublin)
Dear RHESSI Collaborators,
The level of solar activity is low. Newly numbered region NOAA 12415
rotated over the South East limb in the past 24 hours with reasonably
large leading and trailing spot clusters and produced several B-class
flares. Recently emerged NOAA 12414 grew significantly in the past 24
hours, increasing in complexity from an alpha/A-type designation to a
beta-gamma/D-type. NOAA 12414 was the source of the largest flare in
the past 24 hours, a C1.3 on 11-Sep-2015 at 21:30 UT. Further B-class
activity is expected, with a good chance for more C-class flares.
The position of NOAA 12414 on 12-Sep-2015 at 12:30 UT is:
S10W27, ( 426", -271" )
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 (Trinity College Dublin)
Dear RHESSI Collaborators,
Solar activity remains at an extremely low level. NOAA 12412 decayed
slightly over the previous 24 hours and has remained classified as a
beta/C-type sunspot group. New region NOAA 12414 (alpha/A-type group)
has emerged only 10 degrees ahead of NOAA 12412. B-class activity is
possible over the next 24-hour period.
The position of NOAA 12412 on 10-Sep-2015 at 12:00 UT is:
S08E10, ( -170", -250" )
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 (Trinity College Dublin)