Product: Forecast Discussion Issued: 2020 Aug 03 0030 UTC Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
.24 hr Summary… Solar activity remained very low. Region 2767 (S22W85, Hsx/alpha) was stable as it rotated towards the W limb. Region 2769 (N26E53, Axx/alpha) developed a trailer spot while its leader spot decayed to plage. No Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast… Solar activity is expected to remain at very low levels for 03-05 Aug.
.24 hr Summary… The greater than 2 MeV electron flux reached moderate levels and the greater than 10 MeV proton flux remained at background levels.
.Forecast… The greater than 2 MeV electron and 10 MeV proton fluxes are expected to remain below event threshold on 03-05 Aug.
.24 hr Summary… Solar wind parameters, as measured by the DSCOVR spacecraft, suggested the onset of a CIR ahead of a positive polarity CH HSS. Total magnetic field strength increased to a peak of 12 nT at 02/1145 UTC while the Bz component reached as far south as -10 nT during the same time. Solar wind speeds steadily increased after 02/0427 UTC from 318 km/s to near 530 km/s by the period’s end. Phi was primarily oriented in the positive sector.
.Forecast… Solar wind parameters are expected to continue to be enhanced on 03-05 Aug as positive polarity CH HSS effects persist.
.24 hr Summary… The geomagnetic field was at quiet to unsettled levels under positive polarity CH HSS influence.
.Forecast… The geomagnetic field is expected to reach unsettled levels on 03-04 Aug as CH HSS influence persists. Quiet conditions are likely on 05 Aug as nominal conditions return.
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