1. SIDC Space Weather Briefing
28 October November 2018
Jan Janssens & the SIDC forecaster team

2. 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

3. Solar Activity

4. Solar active region - start of the week
SDO/HMI White Light
SDO/HMI Magnetogram

5. Solar active region - middle of the week
SDO/HMI White Light
SDO/HMI Magnetogram

6. Solar active region - end of the week
SDO/HMI White Light
SDO/HMI Magnetogram

7. Solar active region & Filament
SDO/AIA 30.4 nm
SDO/AIA 30.4 nm

8. Filament & Filament eruption
H-alpha
H-alpha

9. Solar F10.7cm radio flux

10. 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

11. Solar proton flux

12. Solar active region & Coronal hole
SDO/AIA 19.3 nm
SDO/AIA 19.3 nm

13. Solar active region & Coronal hole
SDO/AIA 19.3 nm
SDO/AIA 19.3 nm + + + - + -

14. Coronal Mass Ejection
No CMEs were detected by CACTus in SOHO/LASCO C2 imagery
No earth-directed CMEs were observed in coronagraphic imagery

15. Solar Wind and Geomagnetic Activity

16. Solar wind parameters (DSCOVR data)

17. Solar wind parameters & K-index (DSCOVR/Dourbes)

18. Geomagnetic activity (K-indexes)

19. K-Dourbes index The CIR and HSS related to the positive polarity CH
arrived later than expected based on STEREO-A data

20. Outlook

21. Outlook: Solar activity

22. Outlook: Solar wind

23. Outlook: Geomagnetic activity

24. SIDC Space Weather Briefing
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