*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 October 31 06:47UTC 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 30.10.2019 at 20:00 UTC was 70 sfu. The background X-Ray flux is at the class A6 level. The geomagnetic field was at quiet to unsettled levels on October 30. 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: 410 km/s. Solar Wind speed from STEREO A: 460 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 1 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new coronal hole on the southern hemisphere of the visible solar disk was in Earth facing position on Oct. 27-28. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at almost quiet levels on October 31 - November 2. Date Estimated Ap index Expected geom. storm 2019.10.31 06 - 2019.11.01 05 - 2019.11.02 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 ***************************************************************************