*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 May 11 07:22UTC 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 10.05.2019 at 20:00 UTC was 76 sfu. The background X-Ray flux is at the class B1 level. The geomagnetic field was at quiet to unsettled levels on May 10. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at active levels with Kp=4. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 355 km/s. Solar Wind speed from STEREO A: 490 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 11 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 almost quiet to minor storm levels on May 11 due to the arrival of May 7 CME and at quiet to unsettled levels on May 12-13. Date Estimated Ap index Expected geom. storm 2019.05.11 14 G1 2019.05.12 08 - 2019.05.13 06 - *************************************************************************** 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 ***************************************************************************