Forecast Discussion

Product: Forecast Discussion Issued: 2020 Sep 16 1230 UTC Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity
.24 hr Summary… Solar activity was very low and the visible disk remained spotless. No Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast… Very low solar activity is expected to continue 16-18 Sep.
Energetic Particle
.24 hr Summary… The greater than 2 MeV electron flux was normal to moderate and the greater than 10 MeV proton flux continued at background values.
.Forecast… The greater than 2 MeV electron flux is expected to continue at normal to moderate levels 16-18 Sep and the greater than 10 MeV proton flux is expected to remain at background.
Solar Wind
.24 hr Summary… Solar wind parameters were indicative of a return to an ambient, background state. Total IMF strength decreased to less than 5 nT and the Bz component underwent primarily weak deviations. Solar wind speed decreased from around 375 km/s to speeds near 325 km/s. The phi angle was predominantly positive.
.Forecast… A slow solar wind regime is anticipated to continue 16-18 Sep.
.24 hr Summary… The geomagnetic field was quiet.
.Forecast… A quiet geomagnetic state is expected to continue 16-18 Sep.
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