MM#009 Default HESSI Target
Dear RHESSI Collaborators,
The activated dark filament in target region NOAA 2672
(N07W15, E-type/beta) mentioned in the message
yesterday became destabilized and erupted around
20:45 UT and was associated with a weak double ribbon
flare and a B5.4 event at 08/26/21:00 UT. The largest event
since the last message was a limb occulted C6.3 at
08/27/15:16 UT produced by NOAA 2671 located on the
northwestern limb. 2672 continues in decay phase. The
target will switch to 2671. Another C-class limb event is
possible in the next 24 hours.
The position of NOAA 2671 on August 27 at 13:30 UT is:
N14W91 (Solar X = 920", Solar Y = 229")
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,
Target region NOAA 2672 (N07W02, E-type/beta-gamma)
and NOAA 2671 (N13W77, F-type/beta-gamma) produced
minor B-class events since the last message. 2672 continues
to decay and 2671 is displaying new small negative polarity
spots emerging just west of the main positive polarity trailing
sunspot. 2672 has a well-defined somewhat active dark
filament located along its magnetic inversion line.
2672 and 2671 are expected to be the source of B-class
events with another C-class event possible in the next 24 hours.
The position of NOAA 2672 on August 26 at 15:00 UT is:
N07W02 (Solar X = 033", Solar Y = -001")
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,
Target region NOAA 2672 (N07E13, E-type/beta-gamma)
and NOAA 2671 (N11W64, E-type/beta-gamma) are slowly
decaying. Both regions produced minor B-class events and
2672 was the source of an isolated C5.5 event at 08/25/07:27.
Both regions have the potential to produce B-class activity
and another C-class event is possible in the next 24 hours.
The position of NOAA 2672 on August 25 at 13:40 UT is:
N07E13 (Solar X = -212", Solar Y = 002")
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,
Target region NOAA 2672 and NOAA 2671 produced C-
and B-class events since the last message. The largest
C-class event was a C3.0 at 08/24/00:37 UT produced
by NOAA 2671. 2671 continues to decay especially
within its trailing portion. 2672 is mostly unchanged.
Both regions are likely to be the source of B- and
C-class events in the next 24 hour period.
The position of NOAA 2672 on August 24 at 13:30 UT is:
N08E26 (Solar Y = -413", Solar Y = 027")
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,
NOAA regions 2671 and 2672 are continuing to decay.
2671 has had a significant loss of sunspot count and area
and 2672 has lost its magnetic delta configuration.
Both regions produced numerous B- and C-class events
since the last message. Target region NOAA 2672 was
the source of the largest event (C2.2 at 08/23/13:42 UT).
B-class events expected and a C-class event probable
from the target region and B-class events probable with
the chance of another C-class event from 2671 (N10W39)
in the next 24 hour period.
The position of NOAA 2672 on August 23 at 13:30 UT is:
N08E39 (Solar X = -593", Solar Y = 042")
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,
NOAA 2671 (N11W26) was the source of numerous B- and
C-class events since the last message but target
region, NOAA 2672, was the source of the largest event
of the period (C3.0 at 08/21/17:57 UT). Both regions
are somewhat decaying but 2671 is still maintaining its
large F-type/beta-gamma sunspot group and 2672 is
still an E-type/beta-gamma-delta group.The magnetic
delta configuration is located within the trailing portion.
At this time we will continue to target 2672 for at least
the next 24 hour period. B- and C-class events expected
with a slight chance of an isolated M-class event in the next
24 hours with also a chance of B- and C-class activity from 2671.
The position of NOAA 2672 on August 22 at 16:00 UT is:
N07E52 (Solar X = -744", Solar Y = 045")
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,
Target region NOAA 2672 has an E-type/ beta-gamma sunspot
group with a possible small magnetic delta configuration
located within its trailing portion. 2672 was the source
of B- and C-class events since the last message. The
largest event was a C9.4 at 08/20/19:39 UT. 2672 also
produced a C5.9 at 08/21/03:16 UT. NOAA 2671
(F-type/beta-gamma) was the source of two minor B-class
events in the past 24 hours. B- and C-class events expected
with the chance of an isolated M-class from the target region
2672 and/or 2671 in the next 24 hour period
The position of NOAA 2672 on August 21 at 14:00 UT is:
N07E68 (Solar X = -875", Solar Y = 072")
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 northeastern limb target region, now numbered
NOAA 2672, produced an isolated M1.1 event at
08/20/01:52 UT. It also produced a few B- and
C-class events in the past 24 hours. Former target
2671 (F-type/beta-gamma) was the source of a C7.0
event at 08/19/21:55 UT. 2672 is too close to the limb
to ascertain its magnetic configuration but it has an
unusual tilted magnetic inversion line and continues to
display bright surges. Both 2671 and 2672 have the
potential to produce B- and C-class events with the
chance of an M-class event in the next 24 hour period.
The position of NOAA 2672 on August 20 at 17:00 UT is:
N07E80 (Solar X = -928", Solar Y = 095")
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,
Target region (NOAA 2671, N11E13) is maintaining its
large F-type/beta-gamma sunspot group but is somewhat
stable producing only two minor C-class events since the
last message. The largest was a C2.9 at 08/18/21:04 UT.
The most productive region in the past 24 hours was an
active region located about one half of a day beyond the
northeastern limb. This new region was the source of
multiple limb occulted C-class events. The largest was a
C4.4 at 08/18/20:02 UT. The region is dynamic displaying
bright H-alpha surges and spray-type prominences.
The target will switch to the east limb region today.
B- and C-class activity is still possible from 2671, but the
limb region is currently more active. B-and C-class events
probable with a chance for an isolated M-class in the next
24 hour period.
The approximate position of the target on Aug 19 at 15:30 UT is:
N06E90 (Solar X = -943", Solar Y = 098")
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,
NOAA 2671 (F-type/beta-gamma) has decayed losing its
weak magnetic delta configuration. 2671 was the source
of several B-class events since the last message. The
largest was a B9.5 at 08/18/08:52 UT. B-class activity
expected with the chance of a C-class event in the next
24 hours.There is also a very slight chance of an isolated
M-class event.
The position of NOAA 2671 on August 18 at 13:00 UT is:
N11E28 (Solar X = -439", Solar Y = 083")
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)