1. SIDC Space Weather Briefing
24 February March 2019
Matthew West & the SIDC forecaster team

2. Summary Report
Solar activity from :00 UT to :00 UT
Active regions
None
Flaring
# B-class flare: 0 # C-class flare: 0 # M-class flare: 0 # X-class flare: 0
Filaments
CMEs
Two small West limb CMEs
Proton Events
Background Level
Solar wind and geomagnetic conditions from :00 UT to :00 UT
Coronal Holes
1 extended equatorial CH
ICME
None
SW Conditions
CIR with Fast solar wind (~600 km/s)
K-indices
max K-index (Dourbes): max Kp-index (NOAA): 5
All Quiet Alert: All quiet until February 27

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 & Coronal hole
SDO/AIA 19.3 nm
SDO/AIA 19.3 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
---|01|01|01
---|05|01|01
Observed
00|00|00|00

11. Coronal Mass Ejection

12. Solar proton flux

13. Solar Wind and Geomagnetic Activity

14. Solar wind parameters (DSCOVR data)
The Earth was under the influence of a HSS from Wednesday, 27th Feb. We saw the initial affects of the CIR and the following HSS associated from the negative polarity CH located. The Solar wind speed increased from 300 to approx 610 km/s. The total B increased to 12nT, and Bz, for periods reached -12nT, producing kp = 5 for a couple of short periods.

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

16. Geomagnetic activity (K-indexes)

17. Outlook

18. Outlook: Solar activity
The face of the solar disk is dominated by patchy coronal hole regions, which may enhance solar wind / geomagnetic conditions. A small, currently unnamed, AR rotated on to the East Solar limb on 02-Mar-2019, it appears to be producing little activity, and was active at the A/B class level on its previous roatation.

19. Outlook: Solar wind
The abating solar wind conditions related to the passing of the negative polarity coronal hole will continue. However, the face of the solar disk is dominated by patchy coronal hole regions, which may enhance solar wind conditions for the next few days, but it's expected to be mainly quiet, with short periods of enhnanced Solar wind speed.

20. Outlook: Geomagnetic activity

21. SIDC Space Weather Briefing
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