*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 November 06 09:09UTC 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 05.11.2018 at 20:00 UTC was 68 sfu. The background X-Ray flux is at the class A2 level. The geomagnetic field was at unsettled to moderate storm levels on November 5. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at active levels with Kp=4. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 470 km/s. Solar Wind speed from STEREO A: 440 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 1 nT south. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes An equatorial coronal hole (CH892) was in Earth facing position on October 31 - November 1. A high speed stream of solar wind finally arrived on the second half of November 4, almost a day later than our prediction. A new coronal hole (CH893) will be in Earth facing position on November 6-7. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at almost quiet to active levels on November 6 and at quiet levels, with a chance for unsettled intervals, on November 7-8. Date Estimated Ap index Expected geom. storm 2018.11.06 08 - 2018.11.07 05 - 2018.11.08 03 - *************************************************************************** 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 ***************************************************************************