*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 March 30 06:01UTC 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 29.03.2018 at 20:00 UTC was 69 sfu. The background X-Ray flux is at the class A2 level. The geomagnetic field was at very quiet levels on March 29. No obviously Earth directed CMEs were observed in available LASCO imagery. The Kp index now is at almost quiet levels with Kp=2. 2. Solar Wind Geomagnetic Activity Solar Wind speed from ACE: 410 km/s. Solar Wind speed from STEREO A: 450 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 0 nT. 3. Solar Energetic Particle Events Protons and electrons are quiet. 4. Coronal Holes An extension of the northern polar coronal hole (CH859) was in Earth facing position on March 25-27. 5. Geophysical Activity Forecast The geomagnetic field is expected to be at very quiet to unsettled levels with a chance for active intervals on March 30-31 due to CH859 effects and at quiet levels on April 01. Date Estimated Ap index Expected geom. storm 2018.03.30 05 - 2018.03.31 06 - 2018.04.01 04 - *************************************************************************** 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 ***************************************************************************