Forecast Discussion

Product: Forecast Discussion Issued: 2020 Jul 31 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. Regions 2767 (S21W53, Hsx/alpha) and 2768 (N26E34, Axx/alpha) continued to exhibit signs of weak decay. No Earth-directed CMEs were observed in available imagery.
.Forecast… Solar activity is expected to remain at very low levels for 31 Jul – 02 Aug.
Energetic Particles
.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 for 31 Jul – 02 Aug.
Solar Wind
.24 hr Summary… Solar wind parameters, as measured by the DSCOVR spacecraft, continued to reflect nominal conditions. Total field strength averaged near 3 nT, the Bz component was between +2/-5 nT, and the solar wind speeds were between 315 and 370 km/s. Phi angle rotated between both phi angle orientations.
.Forecast… The solar wind environment is expected to continue at nominal levels for 31 Jul. Enhancements consistent with a recurrent, positive polarity CH HSS are expected on 01-02 Aug.
.24 hr Summary… The geomagnetic field was quiet.
.Forecast… The geomagnetic field is expected to be quiet for 31 Jul and quiet to unsettled, with isolated active periods possible, on 01-02 Aug due to possible CH HSS influence.
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