Space Weather Forecast Discussion
Forecast Discussion
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Issued: 2020 Sep 23 0030 UTC

Solar Activity
.24 hr Summary...
Solar activity was very low. The visible solar disk was spotless. No Earth-directed CMEs were observed.
.Forecast...
Solar activity is expected to be very low on 23-25 Sep.

Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached moderate levels while the greater than 10 MeV proton flux continued at background values.
.Forecast...
The greater than 2 MeV electron flux is expected to reach moderate levels while the greater than 10 MeV proton flux is expected to persist at background levels on 23-25 Sep.

Solar Wind
.24 hr Summary...
Solar wind parameters reflected near-background conditions. Total magnetic field strength was mostly 5 to 9 nT. The Bz component generally varied between +3 to -5 nT and solar wind speeds meandered between about 300-325 km/s. Phi angle was predominately negative until after 22/1300 UTC when it rotated to a positive orientation.
.Forecast...
The solar wind environment is expected to persist at mostly background levels until the anticipated arrival of a recurrent, positive polarity CH HSS on day one (23 Sep) and through day three (25 Sep).

Geospace
.24 hr Summary...
The geomagnetic field was at quiet to unsettled levels.
.Forecast...
The geomagnetic field is expected to be quiet to unsettled on day one (23 Sep). Days two and three (24-25 Sep) are expected to be mostly quiet to unsettled, with likely active periods late on 24 Sep and early 25 Sep, due to the arrival of the aforementioned CH HSS.
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