Forecast Discussion

Product: Forecast Discussion Issued: 2020 Sep 16 0030 UTC Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity
.24 hr Summary… Solar activity remained very low under a spotless visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast… Very low solar activity is expected 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 remained at background.
.Forecast… The greater than 2 MeV electron flux is expected to continue at normal to moderate levels 16-18 Sep, while the greater than 10 MeV proton flux is expected to remain at background.
Solar Wind
.24 hr Summary… Solar wind parameters reflected weak enhancements, likely associated with weak interactions with the north polar CH HSS. Total field strength averaged near 4-5 nT, the Bz component was mainly southward, and the solar wind speed was between 350-400 km/s. The phi angle was predominantly positive.
.Forecast… Solar wind parameters are anticipated to slowly weaken as any CH HSS influences wane 16-18 Sep.
.24 hr Summary… The geomagnetic field was quiet to unsettled in response to the slightly enhanced solar wind state.
.Forecast… The geomagnetic field is expected to be mostly quiet on 16-18 Sep.
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