[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2020 Dec 08 1230 UTC

[nw7us@sunspotwatch.com]

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Here is the current forecast discussion on space weather and geophysical activity, issued 2020 Dec 08 1230 UTC.

Solar Activity

24 hr Summary: Solar activity reached low levels. Region 2791 (S15, L=221) was inactive and decayed to plage. Region 2790 (S22W23, Hsx/alpha) produced a long duration C7 flare which resulted in a full halo CME as observed in coronagraph imagery. A consensus of model runs suggest speeds between 830-880 km/s, and arrival in the latter half of 09 Dec.

Forecast: Solar activity is expected to be at mostly low levels with a slight chance for C-class flares 08-10 Dec.

Energetic Particle

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

Forecast: The greater than 2 MeV electron flux is expected to be normal to moderate 08-10 Dec, while the greater than 10 MeV proton flux is expected to continue at background.

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the ACE satellite, reflected ambient conditions. Total IMF strength ranged primarily from 2 to 5 nT and the Bz component underwent mainly weak deviations. Solar wind speed averaged 350-400 km/s. The phi angle was predominantly positive with brief excursions into a negative solar sector.

Forecast: The solar wind is anticipated to continue as primarily a slow regime on 08 Dec. Elevated conditions are likely 09-10 Dec with the combined influence of a weak, negative polarity CH and arrival of a CME from the 07 Dec event.

Geospace

24 hr Summary: The geomagnetic field was quiet.

Forecast: The geomagnetic field is expected to be primarily quiet 08 Dec. G1 (Minor) storm conditions are likely 09-10 Dec due to the combined effects of a weak, negative polarity CH and the arrival of a CME from the 07 Dec event.

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Live data: SunSpotWatch.com

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