[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2019 Jun 11 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2019 Jun 11 1230 UTC.

Solar Activity

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

Forecast: Solar activity is expected to remain at very low levels on 11-13 Jun.

Energetic Particle

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

Forecast: The greater than 2 MeV electron flux is expected to increase to moderate levels for 11-13 Jun due to an enhanced solar environment. The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: Solar wind parameters reflected an ambient-like background environment with solar wind speed decreasing from approximately 358 km/s to under 320 km/s. Total field ranged from 2-4 nT while the Bz component was between +/-3 nT. Phi angle was oriented in a mostly negative (towards) solar sector.

Forecast: 11 Jun and 12 Jun are expected to see elevated solar wind velocities with the anticipated onset of CH HSS effects from a positive polarity northern crown extension CH. Additionally, there is a chance for solar wind conditions to reflect passage of a slow CME on 12 Jun. Waning CH/CME conditions are forecast for 13 Jun.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to see unsettled to active conditions with the anticipated onset of CH HSS effects from a positive polarity, northern crown extension CH on 11-12 Jun. There is also a chance for weak impacts from a slow CME on 12 Jun. Quiet to unsettled conditions are forecast for 13 Jun.

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