:Issued: 2010 Mar 04 1356 UTC
:Product: documentation at http://www.sidc.be/products/bul
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# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 478 from 2010 Feb 22
SOLAR ACTIVITY
-------------
No significant flares occurred during the period, GOES X-ray levels reached only barely B2 levels on Feb 23 and Feb 24. A number of active regions where present on this disc: AR1051 in the Northern hemisphere and AR1049 and AR1050 in the Southern hemisphere.
A group of (partial) halo CMEs erupted over the solar North pole on February 28 with a projected speed of about 300km/s.
GEOMAGNETIC ACTIVITY
-------------------
No significant geomagnetic activity was observerd during the period. A weak shock arrived in the solar wind on Feb 25 around 15h00. Given the Southward Bz component of the magnetic field and low speeds (~380km/s), the geomagnetic reaction was limited to a Kp=2 episode.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Feb 22 016 010 84 005 A5.9 0 0
2010 Feb 23 017 009 84 003 A7.6 0 0
2010 Feb 24 041 021 83 004 A6.8 0 0
2010 Feb 25 028 019 83 005 A5.9 0 0
2010 Feb 26 030 017 81 003 A3.8 0 0
2010 Feb 27 023 011 79 001 A3.2 0 0
2010 Feb 28 /// 008 78 003 A2.3 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 #
# #
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#--------------------------------------------------------------------#
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 478 from 2010 Feb 22
SOLAR ACTIVITY
-------------
No significant flares occurred during the period, GOES X-ray levels reached only barely B2 levels on Feb 23 and Feb 24. A number of active regions where present on this disc: AR1051 in the Northern hemisphere and AR1049 and AR1050 in the Southern hemisphere.
A group of (partial) halo CMEs erupted over the solar North pole on February 28 with a projected speed of about 300km/s.
GEOMAGNETIC ACTIVITY
-------------------
No significant geomagnetic activity was observerd during the period. A weak shock arrived in the solar wind on Feb 25 around 15h00. Given the Southward Bz component of the magnetic field and low speeds (~380km/s), the geomagnetic reaction was limited to a Kp=2 episode.
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DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Feb 22 016 010 84 005 A5.9 0 0
2010 Feb 23 017 009 84 003 A7.6 0 0
2010 Feb 24 041 021 83 004 A6.8 0 0
2010 Feb 25 028 019 83 005 A5.9 0 0
2010 Feb 26 030 017 81 003 A3.8 0 0
2010 Feb 27 023 011 79 001 A3.2 0 0
2010 Feb 28 /// 008 78 003 A2.3 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 #
# #
# For more information, see http://www.sidc.be. Please do not reply #
# directly to this message, but send comments and suggestions to #
# 'sidctech@oma.be'. If you are unable to use that address, use #
# 'rvdlinden@spd.aas.org' instead. #
# To unsubscribe, visit http://sidc.be/registration/unsub.php #
#--------------------------------------------------------------------#
