:Issued: 2010 Jul 13 1128 UTC
:Product: documentation at http://www.sidc.be/products/bul
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# SIDC Weekly bulletin on Solar and Geomagnetic activity #
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WEEK 497 from 2010 Jul 05
SOLAR ACTIVITY
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Several sunspot groups were visible on the Sun during the week. Catania sunspot groups 93 (NOAA AR 1084) and 95 (1086) were observed on July 5-8, and Catania sunspot group 96 (no NOAA number) was observed on July 9. These three groups were small and did not produce any significant flaring activity.
On July 8 a returning active region behind the east limb (NOAA AR 1082 during the previous rotation) produced several B-class flares. On July 9 it appeared on the solar disk and got the Catania number 97. On July 10, Catania observatory reported another sunspot group on the east limb (number 98), situated close to the group 97. These two groups were attributed a single NOAA AR number (1087). This complex active region produced numerous B-class flares and three C-class flares (C1.2 peaking at 22:16 UT on July 8, C1.8 peaking at 09:01 UT on July 9 and C3.4 peaking at 19:51 UT on July 9). Due to the active region position close to the east limb, neither of these flares was accompanied by an Earth-directed CME.
GEOMAGNETIC ACTIVITY
--------------------
During the whole week the Earth was inside a slow solar wind flow with weak to average interplanetary magnetic field magnitude. Geomagnetic conditions were quiet.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Jul 05 027 016 73 004 A4.5 0 0
2010 Jul 06 026 015 73 003 A6.5 0 0
2010 Jul 07 022 007 74 002 A7.6 0 0
2010 Jul 08 011 007 76 003 B1.0 0 0
2010 Jul 09 025 009 80 006 B1.3 0 0
2010 Jul 10 028 016 80 003 B1.8 0 0
2010 Jul 11 /// 019 83 008 B1.4 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)
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NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
#--------------------------------------------------------------------#
# 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 497 from 2010 Jul 05
SOLAR ACTIVITY
--------------
Several sunspot groups were visible on the Sun during the week. Catania sunspot groups 93 (NOAA AR 1084) and 95 (1086) were observed on July 5-8, and Catania sunspot group 96 (no NOAA number) was observed on July 9. These three groups were small and did not produce any significant flaring activity.
On July 8 a returning active region behind the east limb (NOAA AR 1082 during the previous rotation) produced several B-class flares. On July 9 it appeared on the solar disk and got the Catania number 97. On July 10, Catania observatory reported another sunspot group on the east limb (number 98), situated close to the group 97. These two groups were attributed a single NOAA AR number (1087). This complex active region produced numerous B-class flares and three C-class flares (C1.2 peaking at 22:16 UT on July 8, C1.8 peaking at 09:01 UT on July 9 and C3.4 peaking at 19:51 UT on July 9). Due to the active region position close to the east limb, neither of these flares was accompanied by an Earth-directed CME.
GEOMAGNETIC ACTIVITY
--------------------
During the whole week the Earth was inside a slow solar wind flow with weak to average interplanetary magnetic field magnitude. Geomagnetic conditions were quiet.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Jul 05 027 016 73 004 A4.5 0 0
2010 Jul 06 026 015 73 003 A6.5 0 0
2010 Jul 07 022 007 74 002 A7.6 0 0
2010 Jul 08 011 007 76 003 B1.0 0 0
2010 Jul 09 025 009 80 006 B1.3 0 0
2010 Jul 10 028 016 80 003 B1.8 0 0
2010 Jul 11 /// 019 83 008 B1.4 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)
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NOTICEABLE EVENTS
DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE
#--------------------------------------------------------------------#
# 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 #
#--------------------------------------------------------------------#
