*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 March 11 07:59UTC 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 10.03.2019 at 20:00 UTC was 71 sfu. The background X-Ray flux is at the class < A1 level. The geomagnetic field was at very quiet to almost quiet levels on March 10. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at very quiet levels with Kp=0. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 340 km/s. Solar Wind speed from STEREO A: 360 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 will be in Earth facing position on March 10-11. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at quiet levels, with a chance for unsettled intervals, on March 11, at quiet to minor storm levels on March 12 and at quiet to active levels on March 13 due to CME effects. Date Estimated Ap index Expected geom. storm 2019.03.11 03 - 2019.03.12 28 G1 2019.03.13 14 - *************************************************************************** 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 ***************************************************************************