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Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 May 03 07:40UTC
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 02.05.2015 at 20:00 UTC was 106 sfu.
The background X-Ray flux is at the class B4 level.
The geomagnetic field was at quiet to unsettled levels on May 2.
A partial halo CME was observed late in the day and early on May 3 after a large filament eruption in the southern hemisphere.
The Kp index now is at unsettled levels with Kp=3.

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: 1.5 nT north.

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

4. Coronal Holes
A recurrent trans equatorial coronal hole (CH666) was in a potentially geoeffective position on May 2. CH666 has decayed over the last days and may not be capable of creating a geomagnetic disturbance.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unettled levels on May 3-5.

    Date         Estimated Geomagnetic Ap index
2015.05.03                      15
2015.05.04                      12
2015.05.05                      10

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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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