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Product: Daily Forecast of Geomagnetic Activity
Issued: 2022 November 21 05:51UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was decreasing stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 20.11.2022 at 20:00 UTC was 119 sfu.
The background X-Ray flux is at the class Β5.0 level.
The geomagnetic field was at quiet to unsettled levels on November 20
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at active levels with Kp4.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 419 km/s.
Solar Wind speed from STEREO A: 350 km/s.
Solar Wind speed from STEREO B: - km/s.
The southward component Bz is: 5 nT north.

3. Solar Energetic Particle Events
Protons and electrons are quiet.

4. Coronal Holes
A coronal hole (CH1113) at the southern hemisphere was Earth facing on November 16-19. A coronal hole (CH1114) at northern hemisphere  could rotate across the central meridian on November 21.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at unsettled to minor storm (G1) levels on November 21  due to the effects of the coronal hole (CH1113) high speed stream, at quiet to active levels on November 22 and at quiet to unsettled on November 23.

   Date      Estimated Ap index      Expected geom. storm
2022.11.21           20                        G1
2022.11.22           15                        -
2022.11.23           08                        -

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Athens Space Weather Forecasting Center
Physics Department, National & Kapodistrian University of Athens
Athens Neutron Monitor Station A.NE.MO.S
Tel.: +30 210 727 6901
email: spaceweather@phys.uoa.gr
URL: http://spaceweather.phys.uoa.gr
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