:Issued: 2010 Jun 29 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 495 from 2010 Jun 21
SOLAR ACTIVITY
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The activity was very low during the whole week. The most active region was NOAA AR 11082 but it didn't produce any C-class flares.
GEOMAGNETIC ACTIVITY
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Geomagnetic activity was quiet until June 26 when the fast solar wind from a coronal hole arrived to the Earth and produced active conditions.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Jun 21 017 009 72 008 A4.8 0 0
2010 Jun 22 021 010 73 007 A4.9 0 0
2010 Jun 23 015 009 74 005 A4.9 0 0
2010 Jun 24 014 008 74 007 A4.6 0 0
2010 Jun 25 035 007 75 010 A5.1 0 0
2010 Jun 26 024 013 75 015 A4.9 0 0
2010 Jun 27 /// 008 73 016 A4.7 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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