:Issued: 2010 Jun 09 1830 UTC
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 492 from 2010 May 31
SOLAR ACTIVITY
-------------
Solar activity gradually increased towards the middle of the period with the background solar X-ray levels
peaking on June 3 and sunspot number peaking on June 5. Nevertheless only B-flares were observed,
originating from NOAA AR 11076.
GEOMAGNETIC ACTIVITY
-------------------
The solar wind speed increased in the beginning of the period up to a maximum of about 600km/s on June 1,
followed by a decline and sector boundary crossing late June 3. The geomagnetic activity was mostly quiet
during the period with isolated Kp=4 levels and 1 exceptional Kp=5 level.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 May 31 012 003 72 022 A2.7 0 0
2010 Jun 01 /// 010 73 016 A4.7 0 0
2010 Jun 02 /// 012 74 010 A5.3 0 0
2010 Jun 03 024 013 75 012 A5.2 0 0
2010 Jun 04 041 014 72 016 A5.0 0 0
2010 Jun 05 030 018 70 006 A4.8 0 0
2010 Jun 06 /// 008 68 008 A4.4 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 492 from 2010 May 31
SOLAR ACTIVITY
-------------
Solar activity gradually increased towards the middle of the period with the background solar X-ray levels
peaking on June 3 and sunspot number peaking on June 5. Nevertheless only B-flares were observed,
originating from NOAA AR 11076.
GEOMAGNETIC ACTIVITY
-------------------
The solar wind speed increased in the beginning of the period up to a maximum of about 600km/s on June 1,
followed by a decline and sector boundary crossing late June 3. The geomagnetic activity was mostly quiet
during the period with isolated Kp=4 levels and 1 exceptional Kp=5 level.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 May 31 012 003 72 022 A2.7 0 0
2010 Jun 01 /// 010 73 016 A4.7 0 0
2010 Jun 02 /// 012 74 010 A5.3 0 0
2010 Jun 03 024 013 75 012 A5.2 0 0
2010 Jun 04 041 014 72 016 A5.0 0 0
2010 Jun 05 030 018 70 006 A4.8 0 0
2010 Jun 06 /// 008 68 008 A4.4 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 #
#--------------------------------------------------------------------#
__,_._,___
