*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 June 16 05:39UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was decreasing stable during the past 24 hours. Solar Flux (10.7 cm) measured on 15.06.2019 at 20:00 UTC was 67 sfu. The background X-Ray flux is at the class A7 level. The geomagnetic field was at quiet levels on June 15. 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: 360 km/s. Solar Wind speed from STEREO A: 480 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 1 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes An extension of the northern polar coronal hole (CH923) was in Earth facing position on June 8-9. A new coronal hole (CH924) was in Earth facing position on June 13-15. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels on June 16 and at quiet to unsettled levels on June 17-18. Date Estimated Ap index Expected geom. storm 2019.06.16 02 - 2019.06.17 05 - 2019.06.18 07 - *************************************************************************** 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 ***************************************************************************