Forecast Discussion

Product: Forecast Discussion Issued: 2020 Oct 25 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. Region 2776 (S14W77, Hsx/alpha) produced some B-class activity during the period, but was otherwise quiet and stable. A new area of possible spots formed near S20E05. No Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast… Solar activity is expected to persist at very low levels over 25-27 Oct.
Energetic Particles
.24 hr Summary… The greater than 2 MeV electron flux was normal to moderate and the greater than 10 MeV proton flux was steady at background levels.
.Forecast… The greater than 2 MeV electron flux is expected to reach high levels on 25-27 Oct and the greater than 10 MeV proton flux is expected to persist at background levels.
Solar Wind
.24 hr Summary… Solar wind parameters remained enhanced this period due to the continued influence of a positive polarity CH HSS. IMF total field strength values reached 7 nT while the Bz component briefly reached -5 nT. Solar wind speeds generally varied between 525-595 km/s. Phi was predominately oriented in a positive solar sector throughout the period.
.Forecast… Solar wind parameters are expected to remained enhanced over 25-27 Oct due to continued positive polarity CH HSS influence.
Geospace
.24 hr Summary… Geomagnetic field activity was quiet to unsettled this period due to the influence of a positive polarity CH HSS.
.Forecast… The geomagnetic field is expected to reach active levels on 25-27 Oct, with G1 (Minor) storm levels likely on 26 Oct, due to the influence of positive polarity CH HSSs.
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