*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 February 12 05:51UTC 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 11.02.2018 at 20:00 UTC was 78 sfu. The geomagnetic field was at very quiet levels on February 11. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at very quiet levels with Kp=0. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 310 km/s. Solar Wind speed from STEREO A: 460 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 1 nT south. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new coronal hole (CH851) will be in Earth facing position on February 12-13. A small equatorial coronal hole (CH852) was in Earth facing position on February 9-10. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels, with a chance for unsettled levels, on February 12-14. Date Estimated Ap index Expected geom. storm 2018.02.12 02 - 2018.02.13 01 - 2018.02.14 02 - *************************************************************************** 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 ***************************************************************************