SIDC Weekly Bulletin

:Issued: 2020 Feb 18 1606 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 998 from 2020 Feb 10
SOLAR ACTIVITY
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The solar activity was very quiet over the past week. The visible solar
disc was spotless and the X-ray flux remained below B-level. 

No earth-directed coronal mass ejections (CMEs) have been observed in the
available coronagraphic imagery. The greater than 10 MeV proton flux was at
nominal values.
GEOMAGNETIC ACTIVITY
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The Earth was under the slow solar wind regime with the wind speed ranging
between 300 km/s and 450 km/s. The solar wind parameters were slightly
enhanced due to speed streams from several small coronal holes (with
negative and positive polarity). The total interplanetary magnetic field
remained below 6.5 nT, and the southward magnetic component fluctuated
between -6 nT and 5 nT.

The geomagnetic conditions were mostly quiet, with few isolated periods of
unsettled conditions.
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2020 Feb 10   000    000   070   004   ////   0   0   
2020 Feb 11   000    000   071   007   ////   0   0   
2020 Feb 12   000    000   072   005   ////   0   0   
2020 Feb 13   000    000   071   003   ////   0   0   
2020 Feb 14   ///    000   071   ///   ////   0   0   
2020 Feb 15   ///    000   071   ///   ////   0   0   
2020 Feb 16   ///    000   071   ///   ////   0   0   
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# 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 SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
NONE
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