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Product: Daily Forecast of Geomagnetic Activity
Issued: 2021 July 24 07:07UTC
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 23.07.2021 at 20:00 UTC was 87 sfu.
The background X-Ray flux is at the class B2.4 level.
The geomagnetic field was at very quiet levels on July 23. 
The July 20 CME probably is going to miss Earth. 
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at almost quiet levels with Kp=2.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 250 km/s.
Solar Wind speed from STEREO A: 300 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 1 nT south.

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

4. Coronal Holes
A new coronal hole (CH1022) which is an extension of the northern polar CH will be in Earth facing position on July 24-25.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at very quiet levels on July 24-26.

   Date      Estimated Ap index      Expected geom. storm
2021.07.24           03                        -
2021.07.25           02                        -
2021.07.26           01                        -

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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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