*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 March 15 05:58UTC 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 14.03.2019 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 14. 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 unsettled levels with Kp=3. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 330 km/s. Solar Wind speed from STEREO A: 380 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 (CH910) was in Earth facing position on March 10-11. A high speed stream of solar wind from this CH finally reached Earth on the second half of March 14. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet to unsettled levels on March 15-16, with a chance for active intervals, due to CH910 effects and at quiet levels on March 17. Date Estimated Ap index Expected geom. storm 2019.03.15 10 - 2019.03.16 05 - 2019.03.17 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 ***************************************************************************