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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 May 10 14:30UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was increasing during the past 24 hours.
Solar Flux (10.7 cm) measured on 09.05.2015 at 20:00 UTC was 155 sfu.
The background X-Ray flux is at the class B6 level.
The geomagnetic field was at quiet to unsettled levels on May 9.
No obviously Earth directed CMEs were observed.
The Kp index now is at active levels with Kp=4.

2. Solar Wind Geomagnetic Activity
Solar wind speed from ACE: 380 km/s.
Solar wind speed from STEREO A: --- km/s.
Solar wind speed from STEREO B: --- km/s.
The southward component of Bz is: 1.1 nT north.

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

4. Coronal Holes
A recurrent extension (CH667) of the southern polar coronal hole rotated across the central meridian on May 8-9 and may be associated with a co-rotating interaction region.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on May 10-11 and unsettled to active on May 12.

    Date         Estimated Geomagnetic Ap index
2015.05.10                      15
2015.05.11                      14
2015.05.12                      22

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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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