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Product: Daily Forecast of Geomagnetic Activity
Issued: 2023 November 24 08:12UTC
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 23.11.2023 at 20:00 UTC was 174 sfu.
The background X-Ray flux is at the class C1.8 level.
The geomagnetic field was at quiet to unsettled levels on November 23.
A CME was observed on November 22 at 21:36 UT. This CME is expected to reach Earth between on November 25 at 21:35 UT and on November 26 at 04:14 UT according to EAM predictions. 
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at quiet levels with Kp=2.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 356 km/s.
Solar Wind speed from STEREO A: 400 km/s.
Solar Wind speed from STEREO B: - km/s.
The southward component Bz is: 3 nT north.

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

4. Coronal Holes
A coronal hole (CH1187) at northern hemisphereis was Earth facing on November 17-18. A coronal hole (CH1189) at northern hemisphere will be Earth facing on November 23-24.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on November 24 and at quiet to active levels on November 25-26 due to effects from CME observed on November 22.

   Date      Estimated Ap index      Expected geom. storm
2023.11.24           06                        -
2023.11.25           12                        -
2023.11.26           18                        -

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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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