*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 February 09 06:39UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was decreasing stable during the past 24 hours. Solar Flux (10.7 cm) measured on 08.02.2020 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 February 8. 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: 415 km/s. Solar Wind speed from STEREO A: --- km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 2 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new small coronal hole (CH951) on the northern hemisphere of solar disk was in Earth facing position on Feb. 7-8. A high speed stream of solar wind is expected to reach Earth on the second half of February 10 or at the first hours of February 11. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on February 9 due to weak effects from CH950, at quiet to unsettled levels on February 10 and at unsettled to active levels on February 11 due to CH951 effects. Date Estimated Ap index Expected geom. storm 2020.02.09 05 - 2020.02.10 04 - 2020.02.11 11 - *************************************************************************** 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 ***************************************************************************