Dear RHESSI Collaborators,
Solar activity continues at low-to-intermediate levels. Parting active
region NOAA 12158 was the source of a C7.5 flare at 19:26 UT
yesterday. NOAA 12169, which has just rotated on to the eastern limb,
produced a C6.9 flare at 07:02 UT today and shall be the new target
region. It has a simple beta/C-type configuration and is likely to
produce further C-level events with chance for an isolated low M-class
flare.
The position of NOAA 12169 on 18-Sep-2014 at 11:35 UT is:
N05E59, ( -816", 21" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
Solar activity remains at the low C-level, with events emanating from
both NOAA 12158 and 12164 since the last message. NOAA 12158 is now
transiting the western limb and therefore NOAA 12164 shall be the new
target region. The region has a beta/E-type configuration, and has
shown signs of development over the past 24 hours. Further low-level
activity likely.
The position of NOAA 12164 on 17-Sep-2014 at 11:35 UT is:
S13W47, ( 681", -292" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
Solar conditions remain quiescent with X-ray flux steadily below the
C1 level since the last message. The target region, NOAA 12158, was
the source of a C2.2 flare at 18:11 UT yesterday. The region continues
to decay as it nears the western limb but shall remain the target
region, with only minor activity expected over the next 24 hours.
The position of NOAA 12158 on 16-Sep-2014 at 11:35 UT is:
N16W73, ( 878", 227" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
Solar activity has returned to low levels. Both NOAA 12157 and 12158
produced a ~C3 flare since the last message. NOAA 12157 has decayed
significantly as it approaches the western limb, while NOAA 12158 has
undergone rapid flux emergence over the past few hours, and has been
reclassified as a beta-gamma region. NOAA 12158 shall revert to being
the target region with intermediate level events possible over the
next 24 hours.
The position of NOAA 12158 on 15-Sep-2014 at 15:35 UT is:
N16W62, ( 811", 207" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
NOAA 12158 has decayed significantly since the last message and has
remained quiescent. There has been some renewed activity from NOAA
12157, including an M1.5 flare at 02:03 UT today. NOAA 12157 shall be
the new target region with further intermediate level activity
possible before it reaches the western limb.
The position of NOAA 12157 on 14-Sep-2014 at 11:45 UT is:
S14W58, ( 786", -291" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
Solar activity has been at the low C-level for the past 24 hours. The
new region on the eastern limb has been designated NOAA 12166 but
consists of mostly spotless plage, while NOAA 12157 has diminished in
terms of complexity. NOAA 12158 shows emerging negative polarity flux
along the leading edge of the positive leader spot and shall remain
the target region. Further intermediate level activity expected.
The position of NOAA 12158 on 13-Sep-2014 at 15:35 UT is:
N16W35, ( 527", 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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
NOAA 12158 continues to lose complexity and has only produced low
C-level events since the last message. Low M-flares have originated in
NOAA 12157, which maintains a beta-gamma-delta configuration but is
decaying rapidly, and a new active region on the eastern limb, whose
configuration is unknown at this time. We are ending the Major Flare
Watch campaign and resuming the Default HESSI Target OP with NOAA
12158 remaining the target region for a further 24 hours. Additional
C-level activity likely with chance for an M-class flare.
The position of NOAA 12158 on 12-Sep-2014 at 11:45 UT is:
N16W19, ( 299", 152" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
The target region, NOAA 12158, was the source of an X1.6 flare at
17:21 UT yesterday. Since then the region has decreased slightly in
terms of size and complexity, and has now been downgraded to a
beta-gamma region. Major Flare Watch shall remain in effect for an
additional 24 hours due to the increased possibility of another flare
>M5.
The position of NOAA 12158 on 11-Sep-2014 at 11:00 UT is:
N15W06, ( 96", 129" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
NOAA 12158 has remained quiescent since the M4.6 flare yesterday.
However, the region retains its beta-gamma-delta configuration and is
currently undergoing new flux emergence which is forming an unusual
negative polarity halo around the positive leader spot. This emergence
is also coincident with some bright H-alpha emission indicating
possible sheering. Major Flare Watch shall remain in effect for a
further 24 hours due to increased likelihood of an M5 flare or
greater.
The position of NOAA 12158 on 10-Sep-2014 at 13:18 UT is:
N15E06, ( -96", 129" )
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,
Ryan Milligan (NASA/GSFC)
Dear RHESSI Collaborators,
NOAA 12158 was the source of a long-duration M4.6 flare that began at
23:12 UT yesterday, and shall be the new target region. The entire
region has a reversed polarity for the northern hemisphere and has
been upgraded to a beta-gamma-delta configuration due to mixed
polarities within the trailing penumbra. It is also showing signs of
sustained bright H-alpha emission around its magnetic inversion line.
At this time we are implementing a Major Flare Watch campaign due to
the increased probability of an M5 flare or greater over the next
24-48 hours.
The position of NOAA 12158 on 9-Sep-2014 at 13:18 UT is:
N15E20, ( -315", 135" )
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,
Ryan Milligan (NASA/GSFC)