*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 May 29 07:00UTC 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 28.05.2018 at 20:00 UTC was 77 sfu. The background X-Ray flux is at the class A7 level. The geomagnetic field was at very quiet levels on May 28. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at almost quiet levels with Kp=2. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 390 km/s. Solar Wind speed from STEREO A: 380 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 6 nT north. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes A new coronal hole (CH867) close to the equator of the visible solar disk will be in Earth facing position on May 29-31. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet levels on May 29 with a chance for unsettled intervals and at very quiet levels on May 30-31. Date Estimated Ap index Expected geom. storm 2018.05.29 05 - 2018.05.30 04 - 2018.05.31 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 ***************************************************************************