*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 March 18 08:25UTC 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 17.03.2020 at 20:00 UTC was 72 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at quiet to unsettled levels on March 16. 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: 375 km/s. Solar Wind speed from STEREO A: --- 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 equatorial coronal hole (CH955) was in Earth facing position on March 15. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet levels on March 18-20 with a chance for unsettled levels on March 19-20 due to weak effects of CH955. Date Estimated Ap index Expected geom. storm 2020.03.18 04 - 2020.03.19 06 - 2020.03.20 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 ***************************************************************************