*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 November 12 07:52UTC 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 11.11.2018 at 20:00 UTC was 69 sfu. The background X-Ray flux is at the class A1 level. The geomagnetic field was at quiet to unsettled levels on November 11. 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: 600 km/s. Solar Wind speed from STEREO A: 400 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 large coronal hole (CH893) was in Earth facing position on November 6-10. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels, with a chance for active intervals, on November 12-13 due to CH893 effects and at quiet levels on November 14. Date Estimated Ap index Expected geom. storm 2018.11.12 08 - 2018.11.13 07 - 2018.11.14 05 - *************************************************************************** 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 ***************************************************************************