*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 September 28 05:14UTC Prepared by the Athens Space Weather Forecasting Center *********************************************************************** 1. Solar activity Solar activity was decreasing stable during the past 24 hours. Solar Flux (10.7 cm) measured on 27.09.2018 at 20:00 UTC was 67 sfu. The background X-Ray flux is at the class A2 level. The geomagnetic field was at quiet to unsettled levels on September 27. 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: 405 km/s. Solar Wind speed from STEREO A: --- km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 2 nT south. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes No obvious coronal holes are currently in the visible solar disk. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet levels, with a chance for unsettled intervals, on September 28 and at quiet levels on September 29-30. Date Estimated Ap index Expected geom. storm 2018.09.28 06 - 2018.09.29 04 - 2018.09.30 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 ***************************************************************************