MM#009 Default HESSI Target
Dear RHESSI Collaborators,
NOAA 2146 is mostly unchanged maintaining a magnetically
complex D-type/beta-delta sunspot group. 2146 was the
source of a few C-class events and the M3.9 event at
08/25/20:20 UT. C-class events certain with a good chance
of another M-class event. There is also a chance of an
event =/>M5 if 2146 develops additional magnetic complexity
in the next 24 hours.
The position of NOAA 2146 on August 26 at 11:30 UT is:
N09W53 (Solar X = 750", Solar Y = 078")
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,
The Major Flare Watch target (NOAA 2151, S07E49) has
been quiescent since the major M5.9 event at 08/24/12:17 UT.
2151 is the decayed return of flare-active old NOAA 2130.
2151 currently has a simple C-type/beta sunspot group.
It appears that the M5.9 event was the last large flare from this
region. The new target will be NOAA 2146. 2146 has displayed
rapid flux emergence in the past 48 hours. The new flux is located
adjacent (south) to the old large leader sunspot creating an
interesting D-type/beta-delta magnetic configuration.
2146 was the source of C-class activity in the past 24 hours
and the M2.0 event at 08/25/15:11 UT. C-class events probable
with the chance of another M-class event in the next 24-48 hours.
The position of NOAA 2146 on August 25 at 11:30 UT is:
N09W40 (Solar X = 604", Solar Y = 059")
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)
Dear RHESSI Collaborators,
The level of solar activity is moderate-to-high. NOAA 12149 has
shown signs of decay over the past 24 hours after decreasing in
area. This region is classified as a beta-gamma/E-type sunspot
group and has produced several C-class flares since yesterday's
message, including a C5.5 flare on 24-Aug-2014 at 04:53 UT. NOAA
12151 has been numbered after rotating over the South East limb
and has already been the source of an M5.9 flare (on 24-Aug-2014
at 12:00 UT). This appears to be the return of the active region
previously designated as 12130 that displayed a beta-gamma-delta
classification on the last disk transit and produced two M-class
flares. We are now initiating a MM#003 Major Flare Watch because
12151 produced a flare above the M5 level. More C-class activity
is expected over the next 24 hour period, with a chance for more
flaring above the M5 level.
The position of NOAA 12151 on 24-Aug-2014 at 13:00 UT is:
S07E64, ( -846", -166" )
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-to-moderate. NOAA 12149 has
grown in spot area and number of spots with rotating onto the
visible disk. With now being further from the limb, this region
is accurately classified as a beta-gamma/E-type sunspot group.
12149 has continued to produce flares since yesterday's message,
including a C3.5 flare on 23-Aug-2014 at 01:49 UT. More C-class
activity is expected over the next 24 hours, with a good chance
for another M-class flare.
The position of NOAA 12149 on 23-Aug-2014 at 13:00 UT is:
N12E56, ( -769", 133" )
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 is at a moderate level. Yesterday's target region
has been designated as NOAA 12149. Since yesterday's message this
region has continued to produce many C-class flares and an M1.2
flare (on 22-Aug-2014 at 06:18 UT). NOAA 12149 is classified as a
beta/C-type sunspot group, but is still too close to the limb to
be accurately determined. More C-class activity is expected over
the next 24 hours, with a good chance for another M-class flare.
The position of NOAA 12149 on 22-Aug-2014 at 16:30 UT is:
N12E68, ( -861", 154" )
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 moderate. Yesterday's target region
at the North East limb has not yet rotated onto the visible disk to
be assigned a number by NOAA. This region has produced many C-class
flares since yesterday's email and an M3.4 flare on 21-Aug-2014 at
13:19 UT. This region is strong in 3MK Ca XV emission (as reported
by NSO Sacramento Peak), indicating the potential for major flares.
At this point we are *not* initiating an MM#003 Major Flare Watch
as the magnetic complexity of the region is unknown, but this will
continue to be monitored. Further C-class activity is expected over
the next 24 hours, with a good chance for more M-class activity.
The approximate position of this region on 21-Aug-2014 at 17:30 UT is:
N11E90, ( -930", 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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
Solar activity is at a low level. NOAA 12146 (an alpha/H-type sunspot
group) was the only numbered active region that showed signs of growth
over the past 24 hours, but was otherwise unremarkable. Meanwhile, the
other numbered regions all showed signs of decay. A new region beyond
the North East limb produced 2 C-class flares since yesterday's email,
including the largest event of the period (a C4.9 flare on 20-Aug-2014
at 12:38 UT). This region is not the return of a previously numbered
NOAA region, as STEREO-B EUV imaging indicates it only emerged in the
past 2 days. Further C-class activity is possible over the following
24 hours, with a small chance for a low M-class flare.
The approximate position of this region on 20-Aug-2014 at 15:30 UT is:
N11E90, ( -930", 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,
Shaun Bloomfield (Trinity College Dublin)
Dear RHESSI Collaborators,
The level of solar activity remains low. NOAA region 12147 has produced
several B-class flares since yesterday's C1.8 flare (on 18-Aug-2014 at
13:37 UT), but has decreased in magnetic complexity by being classified
as an alpha/H-type sunspot group. NOAA 12139 has continued in its decay,
decreasing in area, number of spots and losing its polarity mixing to be
classified as a beta/C-type sunspot group. However, this region was the
source of the largest event since yesterday's message (a C1.2 flare on
18-Aug-2014 at 16:47 UT). Further C-class activity is possible over the
next 24 hours, with a very small chance for an isolated low M-class flare.
The position of NOAA 12139 on 19-Aug-2014 at 14:30 UT is:
N13W32, ( 491", 119" )
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 is at a low level. NOAA regions 12146 and 12147 recently
rotated over the East limb and both produced C1.8 flares in the past 24
hours (from 12146 on 17-Aug-2014 at 19:41 UT; from 12147 on 18-Aug-2014
at 13:37 UT). NOAA 12139 has shown signs of decay by decreasing in area,
number of spots and now being classified as a beta-gamma/C-type sunspot
group. This region has not produced any noteworthy activity in the past
24 hours, but has maintained some small opposite polarity spots in close
proximity to the primary leading spots. More C-class activity is possible
over the next 24 hours, with a small chance for an isolated low M-class
flare.
The position of NOAA 12139 on 18-Aug-2014 at 16:00 UT is:
N14W23, ( 358", 128" )
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. Three active regions (NOAA
12139, 12141 and 12144) are now classified as beta-gamma/D-type
sunspot groups, but only 12139 and 12144 produced flares in the
past 24 hours. The largest magnitude event in this period was a
B8.4 flare from NOAA 12139 on 17-Aug-2014 at 00:10 UT. Further
B-class activity is expected, with C-class flaring possible and
a small chance for an isolated low M-class flare.
The position of NOAA 12139 on 17-Aug-2014 at 12:30 UT is:
N14W07, ( 111", 121" )
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)