[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2021 Dec 08 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2021 Dec 08 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at very low levels. Region 2904 (S26E10, Axx/alpha) was quiet and has nearly decayed to plage. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low through 10 Dec.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux reached moderate levels. The greater than 10 MeV proton flux maintained background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at moderate to high levels through 08 Dec, then normal to moderate levels by 09 Dec. The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: The solar wind environment was just at or near background levels. Wind speeds decreased from around 500 km/s nearer to 420 km/s by the end of the period. Total field strength ranged from 2-5 nT, and the Bz component was +/- 3 nT. The phi angle was predominantly in the positive solar sector.

Forecast: Solar wind parameters are expected to be at nominal levels through 09 Dec. By 10 Dec minor influences are expected from a CME that will be passing mostly south of Earth.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: Mostly quiet levels are expected through 09 Dec. Unsettled and active levels become more likely on 10 Dec with a CME that will be passing close to Earth.

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Live data: SunSpotWatch.com

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