:Product: Forecast Discussion :Issued: 2020 Dec 29 1230 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Solar Activity
.24 hr Summary... Solar activity was very low as there were only a few low level B-class enhancements. Region 2794 (S17W31, Hsx/alpha) was stable and inactive. Region 2795 (S19W04, Dao/beta) was stable and underwent some decay. No Earth-directed CMEs were observed.
.Forecast... Solar activity is expected to be very low, with a slight chance for C-class flares, over 29-31 Dec.
Energetic Particle
.24 hr Summary... The greater than 2 MeV electron flux was at normal to moderate levels and the greater than 10 MeV proton flux was at background levels.
.Forecast... The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 29-31 Dec. The greater than 10 MeV proton flux is expected to persist at background levels.
Solar Wind
.24 hr Summary... Solar wind parameters were indicative of a mildly enhanced state. Total IMF strength ranged from about 3 to 7 nT and the Bz component was variable with a maximum southward orientation of -4 nT. Solar wind speed averaged mainly between 425-525 km/s. The phi angle was predominantly negative.
.Forecast... Solar wind parameters are expected to remain mildly enhanced on 29 Dec due to weak influences of a negative polarity CH HSS. The return of a nominal solar wind regime is expected on 30-31 Dec.
Geospace
.24 hr Summary... The geomagnetic field was quiet to unsettled.
.Forecast... The geomagnetic field is expected to be at quiet to unsettled levels on 29 Dec due to negative polarity CH HSS influence. A return to quiet conditions is expected on 30-31 Dec.
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