[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2019 Aug 21 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2019 Aug 21 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at very low levels. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to continue at very low levels on 21-23 Aug.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux reached moderate levels. The greater than 10 MeV proton flux remained at background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 21-23 Aug. The greater than 10 MeV proton flux is expected to remain at background levels.

Solar Wind

24 hr Summary: Solar wind parameters were at mostly nominal levels. Solar wind speeds decreased from just above 400 km/s to around 360 km/s. Total field values were between 1-5 nT, and the Bz component was +/- 3 nT. Phi angle was predominately in a negative solar sector.

Forecast: A predominantly nominal solar wind regime is expected on 21-23 Aug, with weak enhancements possible on 21 Aug associated with potential interaction with a negative polarity CH HSS.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be mostly quiet on 21-23 Aug, with isolated periods of unsettled levels possible on 21 Aug, due to influence from a negative polarity coronal hole.

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