*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 April 05 05:52UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was almost stable during the past 24 hours. Solar Flux (10.7 cm) measured on 04.04.2018 at 20:00 UTC was 69 sfu. The background X-Ray flux is at the class A2 level. The geomagnetic field was at quiet levels on April 04. 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: 350 km/s. Solar Wind speed from STEREO A: 470 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 05-06 and at quiet levels on April 07. Date Estimated Ap index Expected geom. storm 2018.04.05 07 - 2018.04.06 07 - 2018.04.07 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 ***************************************************************************