*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 June 10 05:52UTC 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 09.06.2018 at 20:00 UTC was 67 sfu. The background X-Ray flux is at the class ‘2 level. The geomagnetic field was at very quiet levels on June 09. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at quiet levels with Kp=1. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 345 km/s. Solar Wind speed from STEREO A: 290 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 2 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new coronal hole (CH868) on the southern hemisphere of the visible solar disk will be in Earth facing position on June 9-10. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels on June 10-11 and at quiet to unsettled levels on June 12. Date Estimated Ap index Expected geom. storm 2018.06.10 03 - 2018.06.11 02 - 2018.06.12 06 - *************************************************************************** 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 ***************************************************************************