*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2020 June 08 07:03UTC 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 07.06.2020 at 20:00 UTC was 73 sfu. The background X-Ray flux is at the class A3.2 level. The geomagnetic field was at very quiet to active levels on June 7 due to weak effects from a high speed stream of solar wind from an extension of the northern polar coronal hole. No obviously Earth directed CMEs were observed in available LASCO imagery. A B6.4 class solar flare observed on June 7 at 21:48 UT from AR2765. The Kp index now is at almost quiet levels with Kp=2. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 485 km/s. Solar Wind speed from STEREO A: 430 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 extension of the northern polar coronal hole was in Earth facing position on June 3-4. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on June 8 and at quiet levels on June 9-10. Date Estimated Ap index Expected geom. storm 2020.06.08 06 - 2020.06.09 04 - 2020.06.10 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 ***************************************************************************