*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 April 06 05:39UTC 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 05.04.2018 at 20:00 UTC was 66 sfu. The background X-Ray flux is at the class A1 level. The geomagnetic field was at quiet to unsettled levels on April 05. 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: 425 km/s. Solar Wind speed from STEREO A: 400 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 equtorial coronal hole (CH860) will be in Earth facing position on April 05-07. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on April 06 and at quiet levels on April 07-08. Date Estimated Ap index Expected geom. storm 2018.04.06 06 - 2018.04.07 04 - 2018.04.08 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 ***************************************************************************