*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 May 16 04:44UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was almost stable during the past 24 hours. Solar Flux (10.7 cm) measured on 15.05.2020 at 20:00 UTC was 68 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at very quiet levels on May 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: 310 km/s. Solar Wind speed from STEREO A: 400 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 A new equatorial coronal hole (CH964) will be in Earth facing position on May 15. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels on May 16-18 with a chance for unsettled intervals on May 17-18 due to weak effects from CH963. Date Estimated Ap index Expected geom. storm 2020.05.16 03 - 2020.05.17 02 - 2020.05.18 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 ***************************************************************************