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Product: Daily Forecast of Geomagnetic Activity
Issued: 2017 September 10 08:44UTC
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 09.09.2017 at 20:00 UTC was 107 sfu.
The background X-Ray flux is at the class B5 level.
The geomagnetic field was at very quiet to unsettled levels on September 09.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at very quiet levels with Kp=0.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 460 km/s.
Solar Wind speed from STEREO A: 420 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 1 nT north.

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

4. Coronal Holes
A new coronal hole (CH824) at the northern hemisphere of the visible solar disk will be in Earth facing position on September 9-10.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at very quiet levels on September 10-12.

   Date      Estimated Ap index      Expected geom. storm
2017.09.10           02                        -
2017.09.11           02                        -
2017.09.12           02                        -

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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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