[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 May 30 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 May 30 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. Region 2712 (N16W01, Bxo/beta) remained in a decaying trend and was inactive. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to remain very low, with a slight chance of C-class flares all three days (30 May-01 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 through three (30 May-01 Jun). 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 plummeted to below 350 km/s. Total field strength and Bz were at benign values. Phi was positive.

Forecast: A slow solar wind regime is anticipated to continue on days one and two (30-31 May). Day three (01 Jun) is expected to see enhanced conditions due to an approaching CIR ahead of a negative polarity CH HSS.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to remain quiet days one and two (30-31 May). The approaching CIR ahead of the CH HSS is expected to cause unsettled and active levels, with a likely period of G1 (Minor) storm conditions on day three (01 Jun).

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