:Issued: 2012 Jan 09 2204 UTC
:Product: documentation at http://www.sidc.be/products/bul
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# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 575 from 2012 Jan 02
SOLAR ACTIVITY
--------------
Solar activity has been at eruptive levels throughout the whole week, with one or more C flares every day. All of the following NOAA AR have produced one or more C flares: 11388, 11389, 11390, 11392 and 11393.
GEOMAGNETIC ACTIVITY
--------------------
Solar wind speeds measured by ACE have ranged from about 350 to about 450 km/s, whereas the IMF has varied between about 4 and 12 nT. A predicted Coronal Hole high speed stream arrived on January 6, with moderate associated solar wind speeds of about 450 km/s until January 8 inclusive. Though active intervals were predicted for the arrival of the high speed stream, geomagnetic conditions have been quiet throughout the week.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2012 Jan 02 111 063 135 004 B4.1 0 0
2012 Jan 03 158 076 135 008 B4.1 0 0
2012 Jan 04 181 080 136 003 B3.9 0 0
2012 Jan 05 141 070 141 005 B4.3 0 0
2012 Jan 06 /// 076 136 009 B4.8 0 0
2012 Jan 07 /// 078 141 008 B6.1 0 0
2012 Jan 08 /// 067 136 006 B6.1 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 575 from 2012 Jan 02
SOLAR ACTIVITY
--------------
Solar activity has been at eruptive levels throughout the whole week, with one or more C flares every day. All of the following NOAA AR have produced one or more C flares: 11388, 11389, 11390, 11392 and 11393.
GEOMAGNETIC ACTIVITY
--------------------
Solar wind speeds measured by ACE have ranged from about 350 to about 450 km/s, whereas the IMF has varied between about 4 and 12 nT. A predicted Coronal Hole high speed stream arrived on January 6, with moderate associated solar wind speeds of about 450 km/s until January 8 inclusive. Though active intervals were predicted for the arrival of the high speed stream, geomagnetic conditions have been quiet throughout the week.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2012 Jan 02 111 063 135 004 B4.1 0 0
2012 Jan 03 158 076 135 008 B4.1 0 0
2012 Jan 04 181 080 136 003 B3.9 0 0
2012 Jan 05 141 070 141 005 B4.3 0 0
2012 Jan 06 /// 076 136 009 B4.8 0 0
2012 Jan 07 /// 078 141 008 B6.1 0 0
2012 Jan 08 /// 067 136 006 B6.1 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
#--------------------------------------------------------------------#
# 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 #
#--------------------------------------------------------------------#
