[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2018 Mar 08 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2018 Mar 08 1230 UTC.

Solar Activity

24 hr Summary: Solar activity remained very low. No flares or enhancements in X-rays occurred during the period. No Earth-directed CMEs were observed in coronagraph imagery.

Forecast: Solar activity is expected to be very low throughout the forecast period (08-10 Mar).

Energetic Particles

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

Forecast: The greater than 2 MeV electron flux is expected to be at normal to moderate levels throughout the forecast period (08-10 Mar). The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the DSCOVR spacecraft, indicated near-background conditions. Total magnetic field strength ranged between 1-7 nT and Bz was variable over the past 24 hours. Solar wind speeds decreased from 400 to 350 km/s. Phi angle was variable with a tendency towards the positive sector.

Forecast: Mostly nominal conditions are anticipated for the first half of day one (08 Mar). Possible weak enhancements in the solar wind from a non-recurrent coronal hole are possible starting on the second half of day one through day three (10 Mar).

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be at mostly quiet levels on day one (08 Mar) with mostly nominal solar wind conditions expected to persist for the first few hours. Isolated unsettled periods are possible later on day one and active conditions are possible on day two (09 Mar). A return to unsettled conditions is forecast for day three (10 Mar) as expected CH HSS effects begin to wane.

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