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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 June 26 13:39UTC
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 25.06.2015 at 20:00 UTC was 102 sfu.
The background X-Ray flux is at the class B3 level.
The geomagnetic field was at quiet to major storm levels on June 24.
A HALO CME was observed after the M7.9 class solar flare in AR 12371. The CME will hit Earth's magnetic field on June 27.
The Kp index now is at unsettled levels with Kp=3.

2. Solar Wind Geomagnetic Activity
Solar wind speed from ACE: 540 km/s.
Solar wind speed from STEREO A: --- km/s.
Solar wind speed from STEREO B: --- km/s.
The southward component of Bz is: 0.3 nT north.

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

4. Coronal Holes
A small southern hemisphere coronal hole may be numbered later today. It will likely rotate into an Earth facing position on June 27.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on June 26, unsettled to major storm levels on June 27 and active to major storm levels on June 28.

    Date         Estimated Geomagnetic Ap index
2015.06.26                      8
2015.06.27                      35
2015.06.28                      55

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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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