[Propagation+Space Weather] Weekly Propagation Summary - 2020 Aug 31 16:10 UTC

[nw7us@sunspotwatch.com]

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Here is this week's space weather and geophysical report, issued 2020 Aug 31 0137 UTC.

Highlights of Solar and Geomagnetic Activity 24 - 30 August 2020

Solar activity was very low for the highlight period. No spotted regions were present on the visible disk. There were no Earth-directed CMEs observed during the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels on 24-29 Aug. High levels were observed on 30 Aug with a peak flux of 2,800 pfu observed at 30/1845 UTC.

Geomagnetic field activity was at quiet levels on 24-26 Aug under a nominal solar wind environment. Activity levels increased to unsettled on 27 Aug as a positive polarity CH HSS moved into a geoeffective position. G1 (minor) storm levels were observed on 28 Aug with unsettled to active conditions observed on 29-30 Aug, all due to positive polarity CH HSS influences. During this period of activity, solar wind speeds reached a peak of 530 km/s at 29/0631 UTC, total field reached a maximum of 11nt on mid to late 28 Aug while the Bz component reached a maximum southward extent of -8 nT during that same time frame. Phi angle was in a mostly negative solar sector through about midday on 25 Aug when it switched to a predominately positive orientation through the remainder of the period.

Forecast of Solar and Geomagnetic Activity 31 August - 26 September 2020

Solar activity is expected to be very low for the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at moderate to high levels on 31 Aug - 07 Sep and again on 26 Sep due to recurrent CH HSS influences. The remainder of the period is expected to be at normal to moderate levels.

Geomagnetic field activity is expected to be at unsettled to active levels on 31 Aug - 02 Sep, unsettled levels on 18-19 Sep and unsettled to active levels on 23-26 Sep, all due to recurrent CH HSS influences. The remainder of the outlook period is expected to be at quiet levels.

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