*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 November 19 09:02UTC 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 18.11.2019 at 20:00 UTC was 70 sfu. The background X-Ray flux is at the class A8 level. The geomagnetic field was at very quiet levels on November 18. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at quiet levels with Kp=1. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 340 km/s. Solar Wind speed from STEREO A: 370 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 coronal hole (CH945) will be in Earth facing position on November 16-19. A high speed stream of solar wind from this CH is expected to reach Earth on the first half of November 20, but the major part is expected on the first half of November 21. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet levels on November 19, at quiet to unsettled levels with a chance for active intervals on November 20 and at unsettled to active levels with a chance for minor storm intervals on November 21. Date Estimated Ap index Expected geom. storm 2019.11.19 02 - 2019.11.20 10 - 2019.11.21 20 G1 *************************************************************************** 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 ***************************************************************************