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

[nw7us@sunspotwatch.com]

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

Solar Activity

24 hr Summary: Solar activity was at very low levels. Region 2715 (N08W01, Dao/beta) was stable and inactive. Region 2713 (N05W58, Dao/beta) exhibited slight growth during the period and was inactive. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low all three days (22-24 Jun) with a chance for C-class flares all three days.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux was at normal to moderate levels and the greater than 10 MeV proton flux continued at background values.

Forecast: The greater than 2 MeV electron flux is expected to continue at normal to moderate levels all three days (22-24 Jun) and the greater than 10 MeV proton flux is expected to remain at background values.

Solar Wind

24 hr Summary: Solar wind parameters were at nominal levels. Total field strength ranged primarily from 2 to 3 nT and the Bz component variations were weak. Solar wind speed decreased to end of period speeds near 350 km/s. The phi angle was positive.

Forecast: A slow solar wind regime is expected to continue the next two days (22-23 Jun). Day three (24 Jun) is expected to see an enhancement due to the arrival of a CIR ahead of a positive polarity CH HSS.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be quiet on days one and two (22-23 Jun). Day three (24 Jun) is expected to be quiet to unsettled due to the anticipated CIR and CH HSS.

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