Here is the current forecast discussion on space weather and...

Here is the current forecast discussion on space weather and geophysical activity, issued 2017 Jun 04 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was low. Region 2661 (N06E32, Eao/beta-gamma) produced two C2 flares at 03/1447 UTC and 03/1921 UTC. Continued decay was observed in and around the leader spot over the past 24 hours. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: C-class flare activity is likely over the next three days (04-06 Jun) with a slight chance for isolated M-class (R1-R2, Minor-Moderate) flare activity.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux reached moderate levels and the greater than 10 MeV proton flux was steady at background levels.

Forecast: The greater than 2 MeV electron flux is expected to continue at normal to moderate levels over the next three days (04-06 Jun) and the greater than 10 MeV proton flux is expected to persist at background levels throughout the forecast period.

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the DSCOVR spacecraft, reflected likely CME influence at the beginning of the period which transitioned to a positive polarity CH HSS through end of the period. Total magnetic field strength slowly decreased from its peak of 12 nT at 03/1200 UTC to 4-6 nT after 03/2030 UTC. Bz was southward with a maximum deflection of 12 nT at the beginning of the period. A rotation of Bz to a northward orientation was observed after 03/1435 UTC. Solar wind speeds began near 400 km/s and increased to a peak of around 500 km/s after 03/1820 UTC. Afterward, wind speeds gradually trended lower to near 425 km/s by the periods end. Phi angle was predominantly oriented in the positive sector.

Forecast: Solar wind parameters are expected continue a trend towards nominal conditions as the positive polarity CH HSS wanes through day one (04 Jun). A fully nominal solar wind environment is expected for days two and three (05-06 Jun).

Geospace

24 hr Summary: The geomagnetic field reached active levels due to a disturbed solar wind environment, likely caused by the combined influences of a positive polarity CH HSS and the passage of the 30 May CME.

Forecast: The geomagnetic field is expected to be at quiet to unsettled levels for the remainder of day one (04 Jun) under the diminishing influence of the positive polarity CH HSS. Generally quiet conditions are expected on days two and three (05-06 Jun) with the return of a nominal solar wind regime.

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