[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 Jan 05 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 Jan 05 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. Region 2693 (N18W46, Axx/alpha) was inactive and showed signs of decay. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to remain very low all three days (05-07 Jan).

Energetic Particle

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

Forecast: The greater than 2 MeV electron flux is expected to continue at normal levels and the greater than 10 MeV proton flux at background levels all three days (05-07 Jan).

Solar Wind

24 hr Summary: Solar wind parameters remained indicative of a slow solar wind regime. Total field strength ranged from 1 to 5 nT, while the Bz component underwent weak deviations. Solar wind speed decreased from near 400 to 350 km/s. The phi angle was predominantly positive.

Forecast: The slow solar wind regime is expected to continue on days one and two (05-06 Jan). The solar wind environment is anticipated to become enhanced late on day three (07 Jan) due to an approaching CIR ahead of a positive polarity CH HSS.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to remain quiet on days one and two (05-06 Jan). Day three (07 Jan) is expected to be quiet to unsettled as a CIR ahead of a CH HSS approaches.

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