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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 August 15 08:06UTC
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 14.08.2015 at 20:00 UTC was 93 sfu.
The background X-Ray flux is at the class B2 level.
The geomagnetic field was at very quiet levels on August 14.
No obviously Earth directed CMEs were observed.
The Kp index now is at quiet levels with Kp=2.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 450 km/s.
Solar Wind speed from STEREO A: 550 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component of Bz is: 4 nT south.

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

4. Coronal Holes
An extension of a northern hemisphere coronal hole (CH683) will likely rotate across the central meridian on August 15-17.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on August 15 and quiet to active levels on August 16-17.

    Date         Estimated Geomagnetic Ap index
2015.08.15                    8
2015.08.16                    15
2015.08.17                    11

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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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