[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2019 Aug 20 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2019 Aug 20 1230 UTC.

Solar Activity

24 hr Summary: Solar activity continued at very low levels as the solar disk remained spotless. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to persist at very low on 20-22 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 20-22 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 gradually increased over the course of the period from background levels to just above 400 km/s. Total field also increased, reaching values of up to 10 nT for a brief time. The Bz component underwent a maximum southward deflection of -6 nT at 20/0132 UTC. The phi angle was in a negative solar sector.

Forecast: Predominantly nominal solar wind conditions are expected on 20-22 Aug, with weak enhancements possible throughout the period, due to 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, with isolated periods of unsettled levels possible, on 20-22 Aug due to influence from a negative polarity coronal hole.

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