SIDC Weekly Bulletin

:Issued: 2019 Sep 16 1250 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 976 from 2019 Sep 09
SOLAR ACTIVITY
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Solar activity was at very low levels. The Sun was spotless and no flares
were observed during the week. There were no Earth directed coronal mass
ejections (CME) and the greater than 10 MeV proton flux remained at
background levels.
GEOMAGNETIC ACTIVITY
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Solar wind parameters were slightly enhanced for most of the week. The
solar wind speed varied between approximately 380 and 550 km/s (ACE). The
interplanetary magnetic field was predominantly directed away from the Sun
(positive sector) and the Bz component ranged between -7 and +8 nT. 
Quiet to unsettled geomagnetic conditions were observed for most of the
week, with one short period of active conditions recorded on September 9.
The Kp index (NOAA) and the local K index (Dourbes) ranged between 0-4 and
0-3, respectively.
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2019 Sep 09   000    000   069   018   A3.8   0   0   
2019 Sep 10   ///    000   070   005   A4.0   0   0   
2019 Sep 11   ///    000   068   005   A4.0   0   0   
2019 Sep 12   000    000   069   006   A3.9   0   0   
2019 Sep 13   ///    000   068   009   A3.7   0   0   
2019 Sep 14   ///    000   069   007   A3.5   0   0   
2019 Sep 15   000    000   068   012   A3.5   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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