*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 March 16 05:27UTC 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 15.03.2019 at 20:00 UTC was 70 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at very quiet to unsettled levels on March 15. The 8 March CME finally arrived on 12/03/2019 - 02:00UT just 1.87 hours earlier from our prediction, visit http://spaceweather.phys.uoa.gr/index.html for more details. 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: 400 km/s. Solar Wind speed from STEREO A: 340 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 A new small equatorial coronal hole (CH911) was in Earth facing position on March 15. A high speed stream of solar wind from this CH is expected to reach Earth on the second half of March 19. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on March 16 and at quiet levels on March 17-18. Date Estimated Ap index Expected geom. storm 2019.03.16 05 - 2019.03.17 03 - 2019.03.18 02 - *************************************************************************** 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 ***************************************************************************