*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 February 04 06:10UTC 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 03.02.2020 at 20:00 UTC was 72 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at very quiet to almost quiet levels on February 3. 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: 355 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 south. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes An extension (CH950) of southern polar coronal hole is expected to be in Earth facing position on February 3-5. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet to unsettled levels on February 4-6. Active intervals are also possible on February 6 due to weak effects from CH. Date Estimated Ap index Expected geom. storm 2020.02.04 05 - 2020.02.05 07 - 2020.02.06 10 - *************************************************************************** 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 ***************************************************************************