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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 February 11 08:08UTC
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 10.02.2015 at 20:00 UTC was 141 sfu.
The background X-Ray flux is at the class B5 level.
The geomagnetic field was at quiet to unsettled levels on February 10.
A partial HALO CME with angular width w>270 deg observed after the M2-class solar flare at 23:36 U.T. This event could cause active to minor storm conditions on February 11 or in the first hours of February 12.
The Kp index now is at unsettled levels with Kp=3.

2. Solar Wind Geomagnetic Activity
Solar wind speed from ACE: 390 km/s.
Solar wind speed from STEREO A: --- km/s.
Solar wind speed from STEREO B: --- km/s.
The southward component of Bz is: 2.6 nT north.

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

4. Coronal Holes
None coronal hole is currently in the visible solar disk.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at active levels on February 11-12 due to the partial HALO CME effects and quiet to unsettled on February 13.

    Date         Estimated Geomagnetic Ap index
2015.02.11                      18
2015.02.12                      16
2015.02.13                      8

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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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