:Issued: 2010 Aug 24 2031 UTC
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity #
#--------------------------------------------------------------------#
WEEK 503 from 2010 Aug 16
SOLAR ACTIVITY
-------------
NOAA AR 1098 was the dominant active region during the period. On Aug 18 it was positioned on the North West
limb and triggered the biggest flare of the period: a C4.5 long duration flare at 05:48. The event was associated
with a coronal mass ejection and an increase in solar proton fluxes, that however did not pass the event
threshold levels (10 fpu at 10 MeV).
Following this event, the active region rotated behind the North West limb, an SIDC ALL QUIET ALERT was issued
and indeed, no more flaring activity was observed.
GEOMAGNETIC ACTIVITY
-------------------
Geomagnetic activity was very low during the period and never went higher than the Kp=3 level.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Aug 16 062 033 85 008 B1.4 0 0
2010 Aug 17 025 016 81 007 B1.4 0 0
2010 Aug 18 023 014 81 005 B1.3 0 0
2010 Aug 19 011 006 78 004 A6.9 0 0
2010 Aug 20 023 003 77 004 A6.2 0 0
2010 Aug 21 011 000 76 003 A5.6 0 0
2010 Aug 22 /// 000 75 002 A4.9 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 503 from 2010 Aug 16
SOLAR ACTIVITY
-------------
NOAA AR 1098 was the dominant active region during the period. On Aug 18 it was positioned on the North West
limb and triggered the biggest flare of the period: a C4.5 long duration flare at 05:48. The event was associated
with a coronal mass ejection and an increase in solar proton fluxes, that however did not pass the event
threshold levels (10 fpu at 10 MeV).
Following this event, the active region rotated behind the North West limb, an SIDC ALL QUIET ALERT was issued
and indeed, no more flaring activity was observed.
GEOMAGNETIC ACTIVITY
-------------------
Geomagnetic activity was very low during the period and never went higher than the Kp=3 level.
---------------------------------------------------------------------------
DAILY INDICES
DATE RC EISN 10CM Ak BKG M X
2010 Aug 16 062 033 85 008 B1.4 0 0
2010 Aug 17 025 016 81 007 B1.4 0 0
2010 Aug 18 023 014 81 005 B1.3 0 0
2010 Aug 19 011 006 78 004 A6.9 0 0
2010 Aug 20 023 003 77 004 A6.2 0 0
2010 Aug 21 011 000 76 003 A5.6 0 0
2010 Aug 22 /// 000 75 002 A4.9 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 #
#--------------------------------------------------------------------#
