[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2021 Jun 19 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2021 Jun 19 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. Region 2833 (N22W06, Hsx/alpha) was stable and quiet throughout the period and new Region 2834 (N20, L=281) decayed into a plage region. No Earth-directed CMEs were observed in available satellite imagery.

Forecast: Solar activity is expected to be very low over 19-21 Jun.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux reached high levels with a peak flux of 4,740 pfu observed at 18/1445 UTC. The greater than 10 MeV proton flux was steady at background levels.

Forecast: The greater than 2 MeV electron flux is expected to reach high levels over 19-21 Jun and the greater than 10 MeV proton flux is expected to persist at background levels throughout the forecast period.

Solar Wind

24 hr Summary: Solar wind parameters reflected diminishing negative polarity CH HSS influence this period. Solar wind speed values remained steady between 475-525 km/s. Total field strength varied between 3-5 nT and Bz fluctuated between +3/-5 nT. The phi angle was negative and solar wind density remained near 5 ppcm throughout the period.

Forecast: Solar wind parameters are expected to be nominal over 19-21 Jun.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be mostly quiet over 19-21 Jun.

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Live data: SunSpotWatch.com

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