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Subject: [Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2020 Sep 22 1230 UTC
From: nw7us@sunspotwatch.com
Reply-to: Practical radio-wave propagation and space weather <propagation@contesting.com>
Date: Tue, 22 Sep 2020 20:07:05 +0000
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Here is the current forecast discussion on space weather and geophysical activity, issued 2020 Sep 22 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 22-24 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 22-24 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 270-325 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 two (23 Sep) and into day three (24 Sep).

Geospace

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

Forecast: The geomagnetic field is expected to be at mostly quiet levels on day one (22 Sep). Days two and three (23-24 Sep) are expected to be primarily quiet to unsettled, with a likely active period late on 24 Sep, due to the arrival of the aforementioned CH HSS.

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Live Aurora mapping is at http://aurora.sunspotwatch.com/

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Today's Space Weather Forecast Discussion - 2020 Sep 22 20:07 UTC

Live data: SunSpotWatch.com

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