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Product: Daily Forecast of Geomagnetic Activity
Issued: 2022 November 25 06:53UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was increasing during the past 24 hours.
Solar Flux (10.7 cm) measured on 24.11.2022 at 20:00 UTC was 110 sfu.
The background X-Ray flux is at the class B3.7 level.
The geomagnetic field was at quiet to unsettled levels on November 24.
Halo CME seen first in the SE of SOHO LASCO C2 and is likely associated with the C7.0-class flare from AR3151 peaking around 07:27 UT on November 22. The CME is expected to reach Earth on November 25 between 08:42 and 17:08 according to EAM predictions.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at active levels with Kp=4.
2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 476 km/s.
Solar Wind speed from STEREO A: 400 km/s.
Solar Wind speed from STEREO B: - km/s.
The southward component Bz is: 4 nT north
3. Solar Energetic Particle Events
Protons and electrons are quiet.
4. Coronal Holes
A coronal hole (CH1114) at northern hemisphere rotated across the central meridian on November 21. A equatorial coronal hole (CH1115) was Earth facing on November 23-24. Also a recurrent coronal hole (CH1116) at northern hemisphere is expected to become Earth facing on November 25-26.
5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on November 25-26 due to the CME effects and at quiet to unsettled levels on November 27.
Date Estimated Ap index Expected geom. storm
2022.11.25 15 -
2022.11.26 12 -
2022.11.27 10 -
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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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