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 03 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at low levels. Region 2661 (N06E45, Eao/beta) produced a C8/Sn flare at 02/1757 UTC, the strongest of the period. Consolidation and areal growth were observed in the trailer spot while the regions leader spot underwent minor decay in its penumbra. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: C-class flare activity is likely over the next three days (03-05 Jun) with a slight chance for isolated M-class (R1-R2, Minor-Moderate) flare activity from Region 2661.

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 (03-05 Jun) and the greater than 10 MeV proton flux is expected to continue at background levels throughout the forecast period.

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the DSCOVR spacecraft, were at nominal levels for most of the period with a possible transient observed near the end of the reporting period. Total magnetic field strength (Bt) was below 5nT until after 03/0800 UTC when Bt trended up to a peak of 13 nT. A significant period of Bz south occurred after 03/1125 UTC when a deflection to -13 nT was observed. A solar wind speed increase accompanied the enhancement in Bt, increasing from a steady speed around 350 km/s to a peak of over 400 km/s. Phi angle was predominantly negative for most of the period with brief transition to positive observed from 02/1610-1820 UTC and 03/1010-1200 UTC.

Forecast: The near-Earth solar wind environment is expected to be slightly enhanced on day one through midday on day two (03-04 Jun) due to the influence of a positive polarity CH HSS and the possible arrival of the 30 May CME. A slow return to background levels is expected to begin after midday on day two through day three (04-05 Jun) with the return to a nominal solar wind regime.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to reach active levels, with isolated G1 (Minor) conditions possible, on day one (03 Jun) due to the influence of a positive polarity CH HSS and the arrival of the 30 May CME. Quiet to unsettled levels are expected on day two (04 Jun) as CH HSS influence wanes and generally quiet conditions are expected on day three (05 Jun) as a nominal solar wind regime returns.

Don’t forget to visit our live space weather and radio propagation web site, at: http://ift.tt/17yXOGK

Live Aurora mapping is at http://ift.tt/2lYUS2h

If you are on Twitter, please follow these two users: + http://ift.tt/1iWH4ta + http://ift.tt/1wJXm19

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

from Ham Radio Times http://ift.tt/2rwRRq9
via IFTTT