***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2015 April 15 06:31UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************

1. Solar activity
Solar activity was almost stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 14.04.2015 at 20:00 UTC was 147 sfu.
The background X-Ray flux is at the class B7 level.
The geomagnetic field was at quiet to active levels on April 14.
No obviously Earth directed CMEs were observed.
The Kp index now is at unsettled levels with Kp=3.

2. Solar Wind Geomagnetic Activity
Solar wind speed from ACE: 420 km/s.
Solar wind speed from STEREO A: --- km/s.
Solar wind speed from STEREO B: --- km/s.
The southward component of Bz is: 9.3 nT south.

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

4. Coronal Holes
An extension (CH663) of the southern polar coronal hole could be associated with a co-rotating interaction region. The extension rotated across the central meridian on April 11-12.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on April 15 and at quiet to unsettled levels on April 16-17.

    Date         Estimated Geomagnetic Ap index
2015.04.15                      18
2015.04.16                      12
2015.04.17                      11

***************************************************************************
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
***************************************************************************