Solar Report - 07/31/2020

By: Gordon Rutherford

Northern Hemisphere

Southern Hemisphere

Product: Forecast Discussion
Issued: 2020 Jul 31 0030 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

Solar Activity
24 hr Summary Solar activity was very low. Both Region 2767 (S20W46, Hsx/alpha) and Region 2768 (N26E40, Hsx/alpha) were mostly quiet and exhibited 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 the next three days.
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 the next three days.
Solar Wind
24 hr Summary Solar wind parameters, as measured by the DSCOVR spacecraft, continued to reflect nominal conditions. Total field strength averaged near 5 nT and the Bz component saw a maximum southward deflection to - 7 nT. Solar wind speeds were between 315 and 330 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. 01-02 Aug may see enhancements consistent with a recurrent positive polarity CH HSS.
24 hr Summary The geomagnetic field was quiet.
Forecast The geomagnetic field is expected to be quiet for 31 Jul and quiet to unsettled on 01-02 Aug due to possible CH HSS impacts.

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