*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 January 06 09:17UTC 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 05.01.2020 at 20:00 UTC was 72 sfu. The background X-Ray flux is at the class A3 level. The geomagnetic field was at quiet to active levels on January 5. 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: 515 km/s. Solar Wind speed from STEREO A: --- km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 3 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new coronal hole (CH948) was in Earth facing position in the southern hemisphere of the visible solar disk on January 5. A high speed stream of solar wind from this CH is expected to reach Earth on the first half of January 8. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to active levels on January 6, at quiet levels on January 7 and at quiet to active levels on January 8 due to CH948 effects. Date Estimated Ap index Expected geom. storm 2020.01.06 07 - 2020.01.07 03 - 2020.01.08 09 - *************************************************************************** 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 ***************************************************************************