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SIDC Space Weather Briefing
28 October November 2018 Jan Janssens & the SIDC forecaster team
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Summary Report Solar activity from :00 UT to :00 UT Active regions The Sun was spotless during the entire week Flaring # B-class flare: 0 # C-class flare: 0 # M-class flare: 0 # X-class flare: 0 Filaments No particular filaments or filament eruptions observed CMEs No earth-directed CMEs were observed Proton Events The > 10 MeV proton flux was at nominal levels Solar wind and geomagnetic conditions from :00 UT to :00 UT Coronal Holes Neg. Polarity CH (Central Mer. transit: Oct); Pos. Pol. CH (CM transit: 31 Oct – 02 Nov) ICME No ICMEs were observed during the period SW Conditions CIR and HSS associated with the pos. pol. CH arrived on 4 November K-indices max K-index (Dourbes): 5 max Kp-index (NOAA): 5, both late on 4 November All Quiet Alert: Ended on 02/12:12UT November 2018
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Solar Activity
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Solar active region - start of the week
SDO/HMI White Light SDO/HMI Magnetogram
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Solar active region - middle of the week
SDO/HMI White Light SDO/HMI Magnetogram
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Solar active region - end of the week
SDO/HMI White Light SDO/HMI Magnetogram
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Solar active region & Filament
SDO/AIA 30.4 nm SDO/AIA 30.4 nm
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Filament & Filament eruption
H-alpha H-alpha
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Solar F10.7cm radio flux
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Flaring activity Probabilities (%) and occurrences (#) of B/C/M/X-flares issued at 12:30 and over the next 24h: Issue date Probability ---|05|01|01 ---|01|01|01 Observed 00|00|00|00
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Solar proton flux
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Solar active region & Coronal hole
SDO/AIA 19.3 nm SDO/AIA 19.3 nm
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Solar active region & Coronal hole
SDO/AIA 19.3 nm SDO/AIA 19.3 nm + + + - + -
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Coronal Mass Ejection No CMEs were detected by CACTus in SOHO/LASCO C2 imagery No earth-directed CMEs were observed in coronagraphic imagery
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Solar Wind and Geomagnetic Activity
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Solar wind parameters (DSCOVR data)
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Solar wind parameters & K-index (DSCOVR/Dourbes)
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Geomagnetic activity (K-indexes)
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K-Dourbes index The CIR and HSS related to the positive polarity CH
arrived later than expected based on STEREO-A data
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Outlook
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Outlook: Solar activity
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Outlook: Solar wind
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Outlook: Geomagnetic activity
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SIDC Space Weather Briefing
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