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

Latest issue

:Issued: 2019 Jul 16 0913 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 967 from 2019 Jul 08
SOLAR ACTIVITY
---------------
One active region was visible on the solar disc, NOAA 2744, only until July
9 when it decayed into a plage. No flares were observed during the week.
There were no Earth-directed CMEs and the greater than 10 MeV proton flux
was at nominal levels throughout the week.
GEOMAGNETIC ACTIVITY
---------------------
On July 8, 18:38 UT, a shock was detected by SOHO (and ACE), it was
associated with a stealth CME (origin not confirmed) and with the arrival
of an expected high speed stream from a positive polarity coronal hole with
speeds up to 660 km/s and interplanetary magnetic fields up to 13 nT (with
Bz going to -11 nT). As a consequence, geomagnetic conditions reached
active levels (k = 4) locally at Dourbes (on July 8, 9 and 10), and minor
storm conditions at planetary scale (Kp = 5, on July 9 and 10).
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2019 Jul 08   012    000   067   011   A6.9   0   0   
2019 Jul 09   000    000   068   018   A6.7   0   0   
2019 Jul 10   ///    000   068   015   A7.1   0   0   
2019 Jul 11   000    000   067   008   A7.2   0   0   
2019 Jul 12   000    000   067   006   A7.1   0   0   
2019 Jul 13   ///    000   066   008   A6.8   0   0   
2019 Jul 14   ///    000   067   008   A6.7   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.