[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2020 Sep 21 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2020 Sep 21 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low with numerous B-class x-ray events observed. The visible solar disk was spotless. No Earth-directed CMEs were observed.

Forecast: Solar activity is expected to be very low on 21-23 Sep.

Energetic Particles

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 21-23 Sep.

Solar Wind

24 hr Summary: Solar wind parameters reflected near-background conditions. Total magnetic field strength was mostly at 6 nT and below with a brief period of 9 nT between about 20/2250-2350 UTC. The Bz component generally varied between +7 to -5 nT and solar wind speeds meandered between about 270-320 km/s. Phi angle was predominately negative throughout the period.

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 three (23 Sep).

Geospace

24 hr Summary: The geomagnetic field was at quiet levels.

Forecast: The geomagnetic field is expected to be at mostly quiet levels on days one and two (21-22 Sep). Day three (23 Sep) is expected to be at quiet to unsettled levels due to the arrival of the aforementioned CH HSS.

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Live data: SunSpotWatch.com

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