:Issued: 2011 Aug 30 1340 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 556 from 2011 Aug 22
SOLAR ACTIVITY
==========
Solar activity was low during the full week, with NOAA ARs 1271 and 1272
producing only small C-class flares.
GEOMAGNETIC ACTIVITY
===============
Geomagnetic conditions were quiet during this week, with unsettled periods
on August 23 due to the arrival of a fast speed stream (with a period with Kp=4).
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2011 Aug 22 /// 063 108 010 B2.5 0 0
2011 Aug 23 /// 066 104 013 B2.4 0 0
2011 Aug 24 /// 047 104 009 B2.5 0 0
2011 Aug 25 /// 047 104 007 B2.9 0 0
2011 Aug 26 /// 057 105 006 B2.7 0 0
2011 Aug 27 /// 050 104 007 B2.5 0 0
2011 Aug 28 /// 046 101 007 B2.2 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
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# 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 #
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