*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2018 February 04 09:35UTC 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 03.02.2018 at 20:00 UTC was 69 sfu. The background X-Ray flux is at the class A3 level. The geomagnetic field was at very quiet levels on February 03. 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: 330 km/s. Solar Wind speed from STEREO A: 440 km/s. Solar Wind speed from STEREO B: --- km/s. The southward component Bz is: 1 nT north. 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 quiet levels on February 4-6, with a chance for unsettled levels on February 4-5 due to the effects from the northern polar coronal hole. Date Estimated Ap index Expected geom. storm 2018.02.04 03 - 2018.02.05 03 - 2018.02.06 02 - *************************************************************************** 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 ***************************************************************************