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

[nw7us@sunspotwatch.com]

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

Solar Activity

24 hr Summary: Solar activity was very low. Region 2712 (N16W15, Bxo/beta) grew in spot count and managed several B-class flares. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to remain very low all three days (31 May-02 Jun).

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 remained at background values.

Forecast: The greater than 2 MeV electron flux is expected to be at normal to moderate levels on days one and two (31 May-01 Jun). Moderate to high levels are expected on day three (02 Jun) due to CH HSS effects. The greater than 10 MeV proton flux is expected to continue at background levels all three days.

Solar Wind

24 hr Summary: Solar wind parameters remained at nominal levels. Solar wind speeds averaged near 350 km/s. Total field and Bz were at benign values. Phi was mostly positive.

Forecast: A slow solar wind regime is anticipated to remain in place day one (31 May). Enhanced conditions are expected on days two and three (01-02 Jun) due to the arrival of a CIR and subsequent CH HSS.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to remain quiet on day one (31 May). Mostly unsettled to active levels, with isolated G1-minor storm levels possible, are expected on days two and three (01-02 Jun).

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