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Product: Daily Forecast of Geomagnetic Activity
Issued: 2016 September 22 05:44UTC
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 21.09.2016 at 20:00 UTC was 86 sfu.
The background X-Ray flux is at the class B2 level.
The geomagnetic field was at quiet to active levels on September 21.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at almost quiet levels with Kp=2.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 475 km/s.
Solar Wind speed from STEREO A: 660 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 0 nT.

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

4. Coronal Holes
The Earth removed from the high speed stream from CH761.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on September 22-24.

   Date      Estimated Ap index      Expected geom. storm
2016.09.22           6                        -
2016.09.23           5                        -
2016.09.24           4                        -

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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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