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 21 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. New Region 2664 (Hsx/alpha, N18E66) was numbered as it became visible on the NW limb, but remained inactive. Region 2663 (N14W78, Hsx/alpha) continued to decay along with Region 2662 (N12W31,Hsx/alpha). No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low with a slight chance for C-class flares over the next three days (21-23 Jun).

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux reached high levels. The greater than 10 MeV proton flux remained at background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at moderate to high levels all three days of the period (21-23 Jun). 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 indicated ambient background conditions. Solar wind velocities decreased from approximately 400 km/s to near 300 km/s. Erroneous wind data (800 km/s) was recorded from DSCOVR from 20/21118 UTC through the end of the period. Wind speeds observed at the ACE spacecraft during that time were more in line with the 340 km/s speeds observed before errors occurred. The Total field was steady around 5 nT while the Bz component was between +/-2 nT. Phi angle was oriented in a negative sector.

Forecast: Solar wind parameters are expected to show nominal conditions on day one (21 Jun) as CH HSS effects fully wane. Possible CIR effects out in advance of a positive polarity CH/HSS are anticipated to show some disturbances in solar wind at L1 during days two and three (22-23 Jun).

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be at quiet levels on day one (21 Jun). Quiet to unsettled conditions are expected on day two(22 Jun) and quiet to active conditions are forecast for day three. The increase in activity is expected due to CIR/ CH HSS effects.

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