*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 July 19 06:46UTC 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 18.07.2019 at 20:00 UTC was 67 sfu. The background X-Ray flux is at the class A6 level. The geomagnetic field was at very quiet levels on July 18. 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: 420 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 An extension of the southern coronal hole (CH930) will be in Earth facing position on July 19-20. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels on July 19-21. Date Estimated Ap index Expected geom. storm 2019.07.19 03 - 2019.07.20 02 - 2019.07.21 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 ***************************************************************************