SIDC Weekly Bulletin

Review of past solar and geomagnetic activity.
Source SIDC (RWC-Belgium)
Frequency Weekly
Format Plain text
Mail header SIDC Weekly Bulletin
SIDC code bul

Archive

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:Issued: 2017 Mar 20 1236 UTC
:Product: documentation at http://www.sidc.be/products/bul
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# SIDC Weekly bulletin on Solar and Geomagnetic activity             #
#--------------------------------------------------------------------#
WEEK 846 from 2017 Mar 13
SOLAR ACTIVITY
---------------
Over the past week solar activity was very low. No significant flares have
been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been
detected. A partial halo CME was visible in SoHO/LASCO C2 images from 20:00
UT onwards on March 13. The ejection was mostly directed towards the North
West and had an angular extent of approximately 180 degrees. The event was
believed to be back-sided and therefore not influence the Earth.
GEOMAGNETIC ACTIVITY
---------------------
The solar wind speed has fluctuated between 340 and 430 km/s over the past
week. The total magnetic field strength has fluctuated between 1 and 10 nT
peaking on 15-Mar-2017. The Bz component fluctuated between -5 and +7 nT.
Geomagnetic conditions ranged between Kp index 0-4 (NOAA) and local K index
0-3 (Dourbes) over the past week.
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2017 Mar 13   ///    000   070   002   ////   0   0   
2017 Mar 14   000    000   070   006   ////   0   0   
2017 Mar 15   011    000   070   006   ////   0   0   
2017 Mar 16   000    000   071   006   ////   0   0   
2017 Mar 17   000    000   071   004   ////   0   0   
2017 Mar 18   ///    000   070   002   ////   0   0   
2017 Mar 19   ///    000   071   002   ////   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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Details

This report is sent once a week, typically on a monday.
The weekly bulletin gives an overview of solar and geomagnetic activity of the past week and includes a noticeable solar events list.
Check the ISES code book for information on ISES codes.