Dear RHESSI Collaborators,
Activity levels are increasing slightly with the rotation of NOAA
11272 onto the disk in addition to 11271. These two regions, both in
the eastern hemisphere, have been producing C-class activity over the
past 24 hours. Although 11272 does not share the magnetic complexity
or the number of sunspots as 11271, it is still a large, flare
producing region that is bright in H-alpha. However, NOAA 11271
remains the most likely source of a large flare. With its multipolar
magnetic field configuration and large, filamentary penumbral spots,
this region will continue to be todays target. Continued C class
flares probable with a possibility of some M class activity.
The position of NOAA 11271Â on 17-Aug-2011 15:30 UT is:
N15E54 ( -742", 180" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
Activity is beginning to increase as NOAA 11271 and the still
unnumbered region on the south east limb rotate onto the disk. NOAA
11271 is showing signs of significant complexity: multiple large
sunspots and multipolar topology. This region which is bright in
H-alpha, EUV and X-rays will most likely continue to produce C class
activity. In addition, some M-class activity may be possible.
The position of NOAA 11271Â on 16-Aug-2011 15:30 UT is:
N17E65 ( -822", 230" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
The solar disk continues to be very quiet today. However, there are
now two regions approaching the east limb - one in the north and one
in the south. Both of these regions have produced occulted C flares in
the past 24 hours are are likely to continue to do so. Today's target
will continue to be the newly numbered NOAA 11271 on the north eastern
limb as STEREO B observations indicate that it is slightly closer to
the solar limb. In addition, it is possible to ascertain the presence
of at least one large sunspot, although the magnetic complexity
remains indeterminate.
The position of NOAA 11271Â on 15-Aug-2011 15:30 UT is:
N11E87 ( -929", 174" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
All of the active regions on disk are in their decay phases with none
showing much promise of significant flaring activity. However, a B
class flare was observed from a highly occulted active region on the
east limb at approximately 09:45 UT. This region may be the return of
NOAA 11260 which produced a huge number of C and M class flares during
its previous passage. As such, todays target will be the east limb at
the position of this active region as it is the most likely source of
flaring activity in the next 24 hours.
The position of the target on 14-Aug-2011 at 16:30 UT is:
N17E90 ( -905", 274" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
Solar activity is at very low levels with no significant flares in the
past 24 hours. As such, today's target will continue to be NOAA 11270,
although like the other regions on disk, it too appears to be in the
early stages of decay. No significant flares expected in the next 24
hours.
The position of NOAA 11270Â on 13-Aug-2011 15:30 UT is:
N23E32 ( -463", 284" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
With NOAA 11263 rotated completely off the disk, solar activity has
dropped significantly. The only flares in the past 24 hours registered
as B class but originated from the highly occulted 11263. Today, with
most other regions in decay, the target will shift to the newly
numbered NOAA 11270 which has recently rotated onto the east limb. The
region consists of bipolar sunspots and is bright in EUV and in
X-rays. It appears to still be evolving and growing so low to moderate
activity may be possible.
The position of NOAA 11270Â on 12-Aug-2011 10:30 UT is:
N23E48 ( -649", 302" )
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,
Claire Raftery (SSL, UC Berkeley)
Dear RHESSI Collaborators,
NOAA 11263 continues to produce significant C class flares - the
largest of these being a C6 event - despite having rotated off the
west limb. Although this region has rotated beyond the limb, it is
clear from STEREO A observations that it is not yet showing signs of
decay. As such, 11263 will continue to be today's target. However,
given its high longitude, we will call off the Major Flare Watch as a
>M5 flare is not likely from our perspective.
The position of NOAA 11263Â on 11-Aug-2011 15:30 UT is:
N17W91 ( 904", 276" )
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,
Claire Raftery (SSL, UC Berkeley)
MM#003 Major Flare Watch
Dear RHESSI Collaborators,
Target region NOAA 1263 was the source of several C-class events
in the past 24 hour period. It is now too close to the west limb
to ascertain its magnetic configuration but earlier in the period it
still had a beta-gamma-delta magnetic classification.
1263 is maintaining bright H-alpha plage with some minor
surging over the delta configuration. Another event =>M5 is
not as likely but still possible in the next 24 hours.
The position of NOAA 1263 on August 10 at 15:30 UT is:
N17W90 (Solar X = 904", Solar Y = 274")
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 RHESSI Collaborators,
Target region NOAA 1263 produced an X6.9 event - the largest
flare of Cycle 24 at 08/09/08:05 UT. 1263 rapidly developed
negative polarity flux yesterday just south of the positive polarity spots
of the weak delta located in the intermediate portion of the
region. This formed a very tight strong delta configuration.
Another =>M5 event is still possible before 1263 limb passage.
The position of NOAA 1263 on August 09 at 15:30 UT is:
N18W77 (Solar X = 877", Solar Y = 268")
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 HESSI Target
Dear RHESSI Collaborators,
Solar flare activity is low - only one C-class event in the past
24 hour period. NOAA 1263 produced a C1.3 at 08/08/03:10 UT.
1263 developed early in the period but now appears to be
decaying slightly. The region is currently classified an
E-type/beta-gamma with a widely spaced delta configuration
located within its intermediate portion. Additional C-class
events expected with a slight chance of an isolated M-class
event. If 1263 has a resurgence of growth, it could produce
an event =>M5.
The position of NOAA 1263 on August 08 at 15:30 UT is:
N17W64 (Solar X = 814", Solar Y = 232")
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)