[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 Mar 22 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 Mar 22 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low and the visible disk remained spotless. No CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low all three days (22-24 Mar).

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux was at high levels, with a maximum flux of 22,143 pfu at 21/1940 UTC. The greater than 10 MeV proton flux continued at background values.

Forecast: The greater than 2 MeV electron flux is expected to be at moderate to high levels on all three days (22-24 Mar) due to CH HSS effects. The greater than 10 MeV proton flux is expected to remain at background levels all three days.

Solar Wind

24 hr Summary: Solar wind parameters were at nominal levels. Both total field and the Bz component were at benign values. Solar wind speed decreased from early period speed was steady near 325 km/s. The phi angle was predominantly negative.

Forecast: The solar wind environment is expected to become enhanced late on day one (22 Mar) due to the influence of a CH HSS. The solar wind environment is expected to remain enhanced on days two and three (23-34 Mar) due to continued CH HSS effects.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be quiet to active, with a likely late period of G1 (Minor) conditions on day one (22 Mar) due to CH HSS effects. Days two and three (23-24 Mar) are likely to experience quiet to active conditions, with a chance for G1 conditions on day three, due to continued CH HSS effects.

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