*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 November 22 04:58UTC 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 21.11.2019 at 20:00 UTC was 70 sfu. The background X-Ray flux is at the class A8 level. The geomagnetic field was at almost quiet to active levels on November 21. 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: 435 km/s. Solar Wind speed from STEREO A: 390 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 A new coronal hole (CH945) will be in Earth facing position on November 16-19. A high speed stream of solar wind from this CH finally reached Earth on November 21 as it was predicted. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at almost quiet to active levels on November 22-23 due to CH945 effects and at quiet to unsettled levels on November 24. Date Estimated Ap index Expected geom. storm 2019.11.22 12 - 2019.11.23 09 - 2019.11.24 07 - *************************************************************************** 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 ***************************************************************************