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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 December 23 09:27UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was almost stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 22.12.2015 at 20:00 UTC was 130 sfu.
The background X-Ray flux is at the class B7 level.
The geomagnetic field was at quiet to active levels on December 22.
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: 460 km/s.
Solar Wind speed from STEREO A: 600 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component of Bz is: 0 nT.

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

4. Coronal Holes
No obvious coronal holes are currently in the visible solar disk.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on Dec. 23-25.

    Date         Estimated Geomagnetic Ap index
2015.12.23                    7
2015.12.24                    6
2015.12.25                    6

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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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