:Issued: 2011 Nov 22 0935 UTC
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 568 from 2011 Nov 14
SOLAR ACTIVITY
-------------
Flaring activity has been at eruptive levels throughout the week, with numerous C-flares occurring every day. In the beginning of the week, the most active regions were NOAA AR 11348 (Cat 42) on the west limb and NOAA AR 11346 (Cat 46) in the south-east. This last region was the source of an M1.9 flare on November 15th at 12:43 UT. Another M-flare occurred on the same day, this time in NOAA AR 11348 (Cat 42). This was an M1.1 flare with peak time 22:35 UT. The other regions on the solar surface were stable and did not produce any C- or M-flares in the first days of the week. Starting from November 17th, more active regions turned over the solar east limb and took over the flaring activity. NOAA AR 11352 (Cat 50), NOAA AR 11354 (Cat 51), NOAA AR 11353 (Cat 52), NOAA AR 11355 and NOAA AR 11356 (together Cat 53) all produced several low C-class flares.
A CME entered the LASCO field-of-view around 20:36 UT on November 14. This CME was also observed by SECCHI, was directed mostly towards the south. The M1.2 flare on November 15 was associated with a northward CME observed in SOHO/LASCO. Many other CME's were observed by SOHO/LASCO and STEREO/COR2 during the week, but non of them was earth-directed.
A very large filament was visible on the solar disk throughout the week, running from the north towards the solar center. It's top part erupted on November 14th around 15:30 UT. The rest of the filament remained stable. Another filament eruption was observed around 15:19 UT in SDO/AIA 304 data on November 17 and yet another one at 16:46 UT on November 18.
GEOMAGNETIC ACTIVITY
---------------------
Geomagnetic conditions were extremely quiet throughout the week and all solar wind parameters remained low. Though we expected a possible glancing blow from the CME that was observed late on November 14th, it did not arrive at Earth. Also the filament eruptions, or any of the other CME's observed throughout the week, did not have any geomagnetic consequences.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Nov 14 187 105 161 001 B8.4 0 0
2011 Nov 15 173 099 148 006 C1.0 3 0
2011 Nov 16 /// 082 142 004 B9.5 0 0
2011 Nov 17 /// 081 148 004 B7.6 0 0
2011 Nov 18 153 089 144 003 B6.9 0 0
2011 Nov 19 184 084 140 000 B6.5 0 0
2011 Nov 20 /// 093 140 002 B6.0 0 0
# RC : Sunspot index (Wolf Number) from Catania Observatory (Italy)
# EISN : Estimated International Sunspot Number
# 10cm : 10.7 cm radioflux (DRAO, Canada)
# Ak : Ak Index Wingst (Germany)
# BKG : Background GOES X-ray level (NOAA, USA)
# M,X : Number of X-ray flares in M and X class, see below (NOAA, USA)
---------------------------------------------------------------------------
NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
15 0903 0912 0923 N20W74 M1.2 SF VI/2,III/1 42 1348
15 1230 1243 1250 S17E30 M1.9 SF 46 1346
15 2227 2235 2242 N20W80 M1.1 1F III/1 42 1348
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium #
# Royal Observatory of Belgium #
# Fax : 32 (0) 2 373 0 224 #
# Tel.: 32 (0) 2 373 0 491 #
# #
# For more information, see http://www.sidc.be. Please do not reply #
# directly to this message, but send comments and suggestions to #
# 'sidctech@oma.be'. If you are unable to use that address, use #
# 'rvdlinden@spd.aas.org' instead. #
# To unsubscribe, visit http://sidc.be/registration/unsub.php #
#--------------------------------------------------------------------#
UT. Another M-flare occurred on the same day, this time in NOAA AR 11348 (Cat 42). This was an M1.1 flare with peak time 22:35 UT. The other regions on the solar surface were stable and did not produce any C- or M-flares in the first days of the week. Starting from November 17th, more active regions turned over the solar east limb and took over the flaring activity. NOAA AR 11352 (Cat 50), NOAA AR 11354 (Cat 51), NOAA AR 11353 (Cat 52), NOAA AR 11355 and NOAA AR 11356 (together Cat 53) all produced several low C-class flares.
A CME entered the LASCO field-of-view around 20:36 UT on November 14. This CME was also observed by SECCHI, was directed mostly towards the south. The M1.2 flare on November 15 was associated with a northward CME observed in SOHO/LASCO. Many other CME's were observed by SOHO/LASCO and STEREO/COR2 during the week, but non of them was earth-directed.
A very large filament was visible on the solar disk throughout the week, running from the north towards the solar center. It's top part erupted on November 14th around 15:30 UT. The rest of the filament remained stable. Another filament eruption was observed around 15:19 UT in SDO/AIA 304 data on November 17 and yet another one at 16:46 UT on November 18.
GEOMAGNETIC ACTIVITY
---------------------
Geomagnetic conditions were extremely quiet throughout the week and all solar wind parameters remained low. Though we expected a possible glancing blow from the CME that was observed late on November 14th, it did not arrive at Earth. Also the filament eruptions, or any of the other CME's observed throughout the week, did not have any geomagnetic consequences.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Nov 14 187 105 161 001 B8.4 0 0
2011 Nov 15 173 099 148 006 C1.0 3 0
2011 Nov 16 /// 082 142 004 B9.5 0 0
2011 Nov 17 /// 081 148 004 B7.6 0 0
2011 Nov 18 153 089 144 003 B6.9 0 0
2011 Nov 19 184 084 140 000 B6.5 0 0
2011 Nov 20 /// 093 140 002 B6.0 0 0
# RC : Sunspot index (Wolf Number) from Catania Observatory (Italy)
# EISN : Estimated International Sunspot Number
# 10cm : 10.7 cm radioflux (DRAO, Canada)
# Ak : Ak Index Wingst (Germany)
# BKG : Background GOES X-ray level (NOAA, USA)
# M,X : Number of X-ray flares in M and X class, see below (NOAA, USA)
---------------------------------------------------------------------------
NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
15 0903 0912 0923 N20W74 M1.2 SF VI/2,III/1 42 1348
15 1230 1243 1250 S17E30 M1.9 SF 46 1346
15 2227 2235 2242 N20W80 M1.1 1F III/1 42 1348
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium #
# Royal Observatory of Belgium #
# Fax : 32 (0) 2 373 0 224 #
# Tel.: 32 (0) 2 373 0 491 #
# #
#--------------------------------------------------------------------#
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 568 from 2011 Nov 14
SOLAR ACTIVITY
-------------
Flaring activity has been at eruptive levels throughout the week, with numerous C-flares occurring every day. In the beginning of the week, the most active regions were NOAA AR 11348 (Cat 42) on the west limb and NOAA AR 11346 (Cat 46) in the south-east. This last region was the source of an M1.9 flare on November 15th at 12:43 UT. Another M-flare occurred on the same day, this time in NOAA AR 11348 (Cat 42). This was an M1.1 flare with peak time 22:35 UT. The other regions on the solar surface were stable and did not produce any C- or M-flares in the first days of the week. Starting from November 17th, more active regions turned over the solar east limb and took over the flaring activity. NOAA AR 11352 (Cat 50), NOAA AR 11354 (Cat 51), NOAA AR 11353 (Cat 52), NOAA AR 11355 and NOAA AR 11356 (together Cat 53) all produced several low C-class flares.
A CME entered the LASCO field-of-view around 20:36 UT on November 14. This CME was also observed by SECCHI, was directed mostly towards the south. The M1.2 flare on November 15 was associated with a northward CME observed in SOHO/LASCO. Many other CME's were observed by SOHO/LASCO and STEREO/COR2 during the week, but non of them was earth-directed.
A very large filament was visible on the solar disk throughout the week, running from the north towards the solar center. It's top part erupted on November 14th around 15:30 UT. The rest of the filament remained stable. Another filament eruption was observed around 15:19 UT in SDO/AIA 304 data on November 17 and yet another one at 16:46 UT on November 18.
GEOMAGNETIC ACTIVITY
---------------------
Geomagnetic conditions were extremely quiet throughout the week and all solar wind parameters remained low. Though we expected a possible glancing blow from the CME that was observed late on November 14th, it did not arrive at Earth. Also the filament eruptions, or any of the other CME's observed throughout the week, did not have any geomagnetic consequences.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Nov 14 187 105 161 001 B8.4 0 0
2011 Nov 15 173 099 148 006 C1.0 3 0
2011 Nov 16 /// 082 142 004 B9.5 0 0
2011 Nov 17 /// 081 148 004 B7.6 0 0
2011 Nov 18 153 089 144 003 B6.9 0 0
2011 Nov 19 184 084 140 000 B6.5 0 0
2011 Nov 20 /// 093 140 002 B6.0 0 0
# RC : Sunspot index (Wolf Number) from Catania Observatory (Italy)
# EISN : Estimated International Sunspot Number
# 10cm : 10.7 cm radioflux (DRAO, Canada)
# Ak : Ak Index Wingst (Germany)
# BKG : Background GOES X-ray level (NOAA, USA)
# M,X : Number of X-ray flares in M and X class, see below (NOAA, USA)
---------------------------------------------------------------------------
NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
15 0903 0912 0923 N20W74 M1.2 SF VI/2,III/1 42 1348
15 1230 1243 1250 S17E30 M1.9 SF 46 1346
15 2227 2235 2242 N20W80 M1.1 1F III/1 42 1348
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium #
# Royal Observatory of Belgium #
# Fax : 32 (0) 2 373 0 224 #
# Tel.: 32 (0) 2 373 0 491 #
# #
# For more information, see http://www.sidc.be. Please do not reply #
# directly to this message, but send comments and suggestions to #
# 'sidctech@oma.be'. If you are unable to use that address, use #
# 'rvdlinden@spd.aas.org' instead. #
# To unsubscribe, visit http://sidc.be/registration/unsub.php #
#--------------------------------------------------------------------#
UT. Another M-flare occurred on the same day, this time in NOAA AR 11348 (Cat 42). This was an M1.1 flare with peak time 22:35 UT. The other regions on the solar surface were stable and did not produce any C- or M-flares in the first days of the week. Starting from November 17th, more active regions turned over the solar east limb and took over the flaring activity. NOAA AR 11352 (Cat 50), NOAA AR 11354 (Cat 51), NOAA AR 11353 (Cat 52), NOAA AR 11355 and NOAA AR 11356 (together Cat 53) all produced several low C-class flares.
A CME entered the LASCO field-of-view around 20:36 UT on November 14. This CME was also observed by SECCHI, was directed mostly towards the south. The M1.2 flare on November 15 was associated with a northward CME observed in SOHO/LASCO. Many other CME's were observed by SOHO/LASCO and STEREO/COR2 during the week, but non of them was earth-directed.
A very large filament was visible on the solar disk throughout the week, running from the north towards the solar center. It's top part erupted on November 14th around 15:30 UT. The rest of the filament remained stable. Another filament eruption was observed around 15:19 UT in SDO/AIA 304 data on November 17 and yet another one at 16:46 UT on November 18.
GEOMAGNETIC ACTIVITY
---------------------
Geomagnetic conditions were extremely quiet throughout the week and all solar wind parameters remained low. Though we expected a possible glancing blow from the CME that was observed late on November 14th, it did not arrive at Earth. Also the filament eruptions, or any of the other CME's observed throughout the week, did not have any geomagnetic consequences.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Nov 14 187 105 161 001 B8.4 0 0
2011 Nov 15 173 099 148 006 C1.0 3 0
2011 Nov 16 /// 082 142 004 B9.5 0 0
2011 Nov 17 /// 081 148 004 B7.6 0 0
2011 Nov 18 153 089 144 003 B6.9 0 0
2011 Nov 19 184 084 140 000 B6.5 0 0
2011 Nov 20 /// 093 140 002 B6.0 0 0
# RC : Sunspot index (Wolf Number) from Catania Observatory (Italy)
# EISN : Estimated International Sunspot Number
# 10cm : 10.7 cm radioflux (DRAO, Canada)
# Ak : Ak Index Wingst (Germany)
# BKG : Background GOES X-ray level (NOAA, USA)
# M,X : Number of X-ray flares in M and X class, see below (NOAA, USA)
---------------------------------------------------------------------------
NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
15 0903 0912 0923 N20W74 M1.2 SF VI/2,III/1 42 1348
15 1230 1243 1250 S17E30 M1.9 SF 46 1346
15 2227 2235 2242 N20W80 M1.1 1F III/1 42 1348
#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium #
# Royal Observatory of Belgium #
# Fax : 32 (0) 2 373 0 224 #
# Tel.: 32 (0) 2 373 0 491 #
# #
#--------------------------------------------------------------------#
