:Issued: 2011 Dec 19 1524 UTC
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 572 from 2011 Dec 12
SOLAR CONDITIONS
-----------------
Solar conditions were fairly quiet during this week, with only simple (alpha, beta) active regions on the disk. At the beginning of the week (a returning) Active Region NOAA 11376 (Catania 80) rotated on the east limb on the disk, which caused the background GOES X-ray flux to rise above C.0 level on 14 Dec. This caused several C-flares on this day. During the other days of this week the sun was fairly quiet with a small C-flare now and then.
GEOMAGNETIC CONDITIONS
------------------------
Geomagnetic conditions were quiet during this week.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Dec 12 118 055 132 008 B5.0 0 0
2011 Dec 13 109 055 133 004 B5.1 0 0
2011 Dec 14 103 056 132 004 B8.3 0 0
2011 Dec 15 091 042 124 000 B3.2 0 0
2011 Dec 16 092 047 121 000 B2.5 0 0
2011 Dec 17 /// 060 120 001 B2.3 0 0
2011 Dec 18 /// 068 128 001 B3.2 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 572 from 2011 Dec 12
SOLAR CONDITIONS
-----------------
Solar conditions were fairly quiet during this week, with only simple (alpha, beta) active regions on the disk. At the beginning of the week (a returning) Active Region NOAA 11376 (Catania 80) rotated on the east limb on the disk, which caused the background GOES X-ray flux to rise above C.0 level on 14 Dec. This caused several C-flares on this day. During the other days of this week the sun was fairly quiet with a small C-flare now and then.
GEOMAGNETIC CONDITIONS
------------------------
Geomagnetic conditions were quiet during this week.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Dec 12 118 055 132 008 B5.0 0 0
2011 Dec 13 109 055 133 004 B5.1 0 0
2011 Dec 14 103 056 132 004 B8.3 0 0
2011 Dec 15 091 042 124 000 B3.2 0 0
2011 Dec 16 092 047 121 000 B2.5 0 0
2011 Dec 17 /// 060 120 001 B2.3 0 0
2011 Dec 18 /// 068 128 001 B3.2 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 #
#--------------------------------------------------------------------#
