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: 2019 Nov 11 2238 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 984 from 2019 Nov 04
SOLAR ACTIVITY
---------------
During this week solar flaring activity was low, without C-class, and only
one B-class flare reported. The B 1.3 flare that peaked at 06:11 UT on
November 5, originated from the NOAA AR 2750. Except NOAA AR 2750 one more
active region was observed on the visible side of the Sun this week, NOAA
AR 2751.
There were no wide CMEs reported this week and the solar protons remained
at the background level during the whole week. 

One equatorial coronal hole of negative polarity was observed on the
visible side of the Sun this week. The patchy, equatorial coronal hole
reached central meridian in the afternoon of November 06.
GEOMAGNETIC ACTIVITY
---------------------
During the whole week the Earth was inside the slow solar wind with the
speed between about 310 and 450 km/s. The interplanetary magnetic field
magnitude was mostly in the range of 3 to 5 nT.
The geomagnetic conditions were mostly quiet with only few short and
isolated intervals of unsettled conditions (local station at Dourbes
reported K=3, and NOAA reported Kp=3).
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DAILY INDICES
DATE           RC   EISN  10CM   Ak   BKG    M   X
2019 Nov 04   000    000   071   004   A6.6   0   0   
2019 Nov 05   ///    000   070   008   A6.7   0   0   
2019 Nov 06   000    000   069   007   A6.7   0   0   
2019 Nov 07   ///    000   070   004   A6.7   0   0   
2019 Nov 08   000    000   070   004   A6.9   0   0   
2019 Nov 09   ///    000   070   006   A6.9   0   0   
2019 Nov 10   ///    000   071   002   A7.0   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.