Composito
Issued: 2020 Apr 04 0030 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity 24 hr summary
Solar activity was very low. Region 2759 (N27E10, Hrx/alpha) remained stable and inactive. No Earth-directed CMEs were observed in available satellite imagery.
Solar Activity Forecast
Solar activity is expected to remain at very low levels on 04-06 Apr.
Energetic Particle 24 hr summary
The greater than 2 MeV electron flux reached high levels with a peak flux of 1,140 pfu at 03/1650 UTC. The greater than 10 MeV proton flux maintained background levels.
Energetic Particle Forecast
The greater than 2 MeV electron flux is expected to reach high levels on 04 Apr and moderate levels on Apr 05-06. The greater than 10 MeV proton flux is expected to continue at background levels.
Solar Wind 24 hr summary
Solar wind parameters, as measured by the DSCOVR spacecraft, reflected mostly nominal conditions. Total magnetic field strength was at 5-6 nT through most of the day. The Bz component briefly reached as far south as -5 nT. Solar wind speeds fluctuated between ~380-450 km/s. Phi angle was primarily oriented in the negative sector.
Solar Wind Forecast
The solar wind field is expected to be near nominal levels on 04 and 06 Apr. A weak enhancement from a positive polarity CH HSS is likely on 05 Apr.
Geospace 24 hr summary
The geomagnetic field was at quiet to unsettled levels until 03/2359 UTC, when an isolated active period was observed.
Geospace Forecast
Isolated active conditions are possible early on 04 Apr due to waning CH HSS influence. Quiet to unsettled conditions are expected on 05 Apr with generally quiet conditions expected on 06 Apr.