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: 2018 Nov 12 1222 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 932 from 2018 Nov 05
SOLAR ACTIVITY
---------------
Over the past week solar activity has been low. Catania sunspot group 1
emerged on November 8 without producing any significant flaring activity.
No Earth directed Coronal Mass Ejections (CMEs) have been detected. The
greater than 10MeV proton flux remained at background levels. The greater
than 10 MeV proton flux was at nominal levels. One coronal hole (CH)
transited the central meridian: negative polarity CH around November 7.
GEOMAGNETIC ACTIVITY
---------------------
The solar wind speed has fluctuated between 380 and 630 km/s over the past
week. The total magnetic field strength has fluctuated mainly around 6 nT
with two periods of elevated activity around November 4 (7 nT) and around
November 10 (13 nT). The Bz component fluctuated accordingly, ranging
between -11 and +10 nT.  Two episodes of enhanced Bz and solar wind speed
were due to a HSS from a positive polarity coronal hole at the beginning of
the week, and from the negative 
polarity coronal hole in the middle of the week. Unsettled to active
geomagnetic conditions were observed for most of the period, with few
intervals of K = 5 (moderate geomagnetic storm) and a single interval Kp =
6 (major geomagnetic storm) recorded by NOAA on November 4 under the
influence of the positive polarity CH HSS.
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2018 Nov 05   000    000   068   029   A1.2   0   0   
2018 Nov 06   000    000   069   007   A1.2   0   0   
2018 Nov 07   000    000   069   010   A1.1   0   0   
2018 Nov 08   011    000   070   012   A1.1   0   0   
2018 Nov 09   011    011   069   015   A1.1   0   0   
2018 Nov 10   ///    000   069   016   A1.0   0   0   
2018 Nov 11   ///    000   069   009   A1.0   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.