*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2019 March 23 09:43UTC 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 22.03.2019 at 20:00 UTC was 82 sfu. The background X-Ray flux is at the class B1 level. The geomagnetic field was at very quiet levels on March 22. 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: 280 km/s. Solar Wind speed from STEREO A: 430 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 No obvious coronal holes are currently in the visible solar disk. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet to minor geomagnetic storm on March 23, at unsettled to moderate storm levels on March 24 and at quiet to active levels on March 25 due to the arrival of the March 20 CME. Date Estimated Ap index Expected geom. storm 2019.03.23 11 G1 2019.03.24 34 G1 - G2 2019.03.25 12 - *************************************************************************** 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 ***************************************************************************