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Product: Daily Forecast of Geomagnetic Activity
Issued: 2016 August 30 05:46UTC
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 29.08.2016 at 20:00 UTC was 88 sfu.
The background X-Ray flux is at the class B4 level.
The geomagnetic field was at quiet levels on August 29.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at unsettled levels with Kp=3.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 400 km/s.
Solar Wind speed from STEREO A: 430 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 2 nT south.

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

4. Coronal Holes
A recurrent trans equatorial coronal hole (CH757) was in an Earth facing position on August 26-27. A recurrent northern hemisphere coronal hole (CH758) will rotate into an Earth facing position on August 29-31. A trans equatorial coronal hole (CH759) could become Earth facing on August 31-September 1.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on August 30-September 1. Minor storm levels are also possible for this period.

   Date      Estimated Ap index      Expected geom. storm
2016.08.30           15                        G1
2016.08.31           16                        G1
2016.09.01           14                        -

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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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