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

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:Issued: 2018 May 21 2031 UTC
:Product: documentation at http://www.sidc.be/products/bul
#--------------------------------------------------------------------#
# SIDC Weekly bulletin on Solar and Geomagnetic activity             #
#--------------------------------------------------------------------#
WEEK 907 from 2018 May 14
SOLAR ACTIVITY
---------------
Solar activity was quiet throughout the week, no C-class flares were
recorded. One active region was present at the beginning of the week (NOAA
AR 2709, only on 14 May). A coronal hole in the southern hemisphere
(negative polarity) crossed central meridian on 13 May.
GEOMAGNETIC ACTIVITY
---------------------
The high speed stream from the mentioned coronal hole was very weak with
speeds no greater than 450 km/s. Geomagnetic conditions were quiet to
unsettled during the week.
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2018 May 14   ///    000   070   006   A1.8   0   0   
2018 May 15   ///    000   070   005   A1.5   0   0   
2018 May 16   000    000   070   004   A1.0   0   0   
2018 May 17   000    000   069   013   ////   0   0   
2018 May 18   ///    000   069   008   ////   0   0   
2018 May 19   ///    000   070   003   ////   0   0   
2018 May 20   ///    000   069   003   ////   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.