*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 April 23 07:02UTC 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 22.04.2020 at 20:00 UTC was 71 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at quiet to unsettled levels on April 22 due to the weak effects from CH. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at almost quiet levels with Kp=2. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 415 km/s. Solar Wind speed from STEREO A: 460 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 A small and poorly defined equatorial coronal hole (CH961) was in Earth facing position on April 18-19. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on April 23-25 due to weak effects from the CH961. Date Estimated Ap index Expected geom. storm 2020.04.23 06 - 2020.04.24 07 - 2020.04.25 05 - *************************************************************************** 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 ***************************************************************************