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Product: Daily Forecast of Geomagnetic Activity
Issued: 2016 April 16 07:28UTC
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 15.04.2016 at 20:00 UTC was 112 sfu.
The background X-Ray flux is at the class B3 level.
The geomagnetic field was at quiet to active levels on April 15.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at quiet levels with Kp=1.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 430 km/s.
Solar Wind speed from STEREO A: 460 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component of Bz is: 3 nT south.

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

4. Coronal Holes
A recurrent northern hemisphere coronal hole (CH728) will rotate across the central meridian on April 15-16.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at very quiet levels on Apr. 16-17 and at quiet levels on Apr. 18.

    Date         Estimated Geomagnetic Ap index
2016.04.16                    3
2016.04.17                    4
2016.04.18                    5

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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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