:Issued: 2010 Aug 31 1041 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 504 from 2010 Aug 23
SOLAR ACTIVITY
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Solar activity was very low during the week,
with no significant flaring activity.
GEOMAGNETIC ACTIVITY
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The week was dominated by the influence of a
coronal hole that triggered active to minor storm
conditions at planetary levels from Aug. 23rd, 21UT
until Aug. 25th 06UT. Minor storm conditions were only
observed during 6 hours on Aug. 25th.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Aug 23 014 000 75 008 A4.9 0 0
2010 Aug 24 011 007 74 022 A4.7 0 0
2010 Aug 25 022 015 74 018 A5.2 0 0
2010 Aug 26 033 014 73 012 A7.5 0 0
2010 Aug 27 011 008 73 018 A7.9 0 0
2010 Aug 28 011 007 72 008 A5.9 0 0
2010 Aug 29 /// 017 74 003 A5.7 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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