*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 July 25 05:54UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was increasing during the past 24 hours. Solar Flux (10.7 cm) measured on 24.07.2020 at 20:00 UTC was 70 sfu. The background X-Ray flux is at the class < A1.0 level. The geomagnetic field was at quiet to unsettled levels on July 24. No obviously Earth directed CMEs were observed in available LASCO imagery. The 19 July CME arrived on July 24 at 00:18 almost 11.27 hours earlier than our prediction. The Kp index now is at unsettled levels with Kp=3. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 370 km/s. Solar Wind speed from STEREO A: 380 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 (CH968) was in Earth facing position on July 19. Weak effects from this CH are expected on the first half of July 23. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels, with a chance for active intervals, on July 25 due to weak effects from CH968 as well as the arrival of a faint CME of July 19. Quiet conditions are expected on July 26-27. Date Estimated Ap index Expected geom. storm 2020.07.25 12 - 2020.07.26 05 - 2020.07.27 04 - *************************************************************************** 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 ***************************************************************************