[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 Mar 31 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 Mar 31 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. Region 2703 (S08E53, Axx/alpha) produced a B7/Sf flare at 31/0911 UTC. No Earth-directed CMEs were observed in available satellite imagery.

Forecast: Solar activity is expected to be very low, with a slight chance for C-class flares, over the next three days (31 Mar-02 Apr).

Energetic Particles

24 hr Summary: The greater than 2 MeV electron flux reached high levels and the greater than 10 MeV proton flux continued at background values.

Forecast: The greater than 2 MeV electron flux is expected to gradually decrease over the next three days (30 Mar-01 Apr), but remain above high levels. The greater than 10 MeV proton flux is expected to remain at background levels throughout the period.

Solar Wind

24 hr Summary: Solar wind parameters suggested fairly weak influence from a positive polarity CH HSS. Solar wind started and ended the period near 420 km/s. Total field peaked at 8 nT. Bz dropped as low as -5 nT. Phi was positive.

Forecast: The solar wind environment is expected to remain enhanced on day one (31 Mar) due to periodic influences from a polar-connected, positive polarity CH HSS. A return to nominal levels is expected by day two and through day three (01-02 Apr) as a nominal solar wind regime is expected to return.

Geospace

24 hr Summary: The geomagnetic field was quiet to unsettled.

Forecast: Geomagnetic field conditions are expected to be quiet to unsettled on day one (31 Mar) due to intermittent influences from a polar-connected, positive polarity CH HSS. Days two and three (01-02 Apr) are likely to be mostly quiet under ambient solar wind conditions.

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