***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2017 February 18 05:15UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************

1. Solar activity
Solar activity was increasing during the past 24 hours.
Solar Flux (10.7 cm) measured on 17.02.2017 at 20:00 UTC was 75 sfu.
The background X-Ray flux is at the class A6 level.
The geomagnetic field was at almost quiet to active levels on February 17.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at active levels with Kp=4.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 510 km/s.
Solar Wind speed from STEREO A: 380 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 0 nT.

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

4. Coronal Holes
Earth is inside a high speed stream from a wide southern hemisphere coronal hole.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at almost quiet to active levels on Feb. 18 - 20 due to CH effects. Minor storm intervals are also possible for this period.

   Date      Estimated Ap index      Expected geom. storm
2017.02.18           18                        G1
2017.02.19           17                        -
2017.02.20           16                        -

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