[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 Jun 07 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 Jun 07 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at very low levels. The solar disk was spotless. No Earth-directed CMEs were observed in available satellite imagery.

Forecast: Solar activity is expected to be at very low levels over the next three days (07-09 Jun).

Energetic Particles

24 hr Summary: The greater than 2 MeV electron flux reached high levels this period with a peak flux of 19,500 pfu observed at 06/1705 UTC. The greater than 10 MeV proton flux was steady at background levels throughout the period.

Forecast: The greater than 2 MeV electron flux is expected to reach high levels each of the next three days (07-09 Jun), which a chance for decreasing to normal to moderate levels on day three (09 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 were indicative of minor enhancements in the solar wind. Solar wind speeds began the day at about 450 km/s and decreased to 400 km/s. Total field peaked at 10 nT and the Bz component dropped to -8 nT early, then settled more northward later in the period. Phi angle was variable.

Forecast: The solar wind environment is expected to be at near-background levels over the next three days (06-08 Jun) as solar wind speeds recover to nominal levels. Minor enhancements are possible due to intermittent current sheet influences, and marginally elevated wind speeds.

Geospace

24 hr Summary: The geomagnetic field was at quiet levels for most of the day, but increased to unsettled to active levels the last period of the day with an enhancement in the solar wind.

Forecast: Days one through three (07-09 Jun) are anticipated to be mostly quiet, with isolated unsettled to active periods, as a result of solar wind speeds running above background levels, and the close proximity [of Earth] to the HCS.

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