*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 January 09 06:31UTC 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 08.01.2020 at 20:00 UTC was 74 sfu. The background X-Ray flux is at the class A4 level. The geomagnetic field was at quiet to unsettled levels on January 8. A disturbance possible associated with the CH948 noticed at the first half of January 8 as it was predicted. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at unsettled levels with Kp=3. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 410 km/s. Solar Wind speed from STEREO A: --- km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 5 nT south. 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. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to active levels on January 9 due to CH948 effects and at quiet levels on January 10-11. Date Estimated Ap index Expected geom. storm 2020.01.09 11 - 2020.01.10 05 - 2020.01.11 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 ***************************************************************************