[Propagation+Space Weather] Weekly Propagation Summary - 2019 Jun 10 16:10 UTC

[nw7us@sunspotwatch.com]

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Here is this week's space weather and geophysical report, issued 2019 Jun 10 0314 UTC.

Highlights of Solar and Geomagnetic Activity 03 - 09 June 2019

Solar activity was at very low levels. No sunspots were observed on the visible disk and there was an absence of significant flare activity. A dissapearing solar filament (DSF), centered near S05E52, was observed in GONG optical imagery at 03/0715 UTC but was not observed in LASCO imagery. This CME was believed to have impacted Earth midday on 08 June. An additional DSF, centered near S05E13, was observed at 07/2145 UTC and is expected to have a possible geoeffective component with an anticipated arrival of 12 June.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 03 June and moderate levels on 04-08 June in response to elevated wind speeds from a negative polarity, coronal hole high-speed stream (CH HSS). The peak electron flux during the reporting period was 2,270 pfu at 03/1755 UTC.

Geomagnetic field activity reached G1 (Minor) storm levels on 08 June and unsettled levels on 09 June as a result of the aforementioned 03 June CME. Quiet conditons were observed throughout the remainder of the period.

Forecast of Solar and Geomagnetic Activity 10 June - 06 July 2019

Solar activity is expected to be at very low levels throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 11-13 and 26-30 June, with moderate levels expected on 10, 14-20, 25 June and 01-03 July in response to elevated wind speeds associated with recurrent CH HSS activity.

Geomagnetic field activity is expected to reach active levels on 12 and 25 June, unsettled levels on 10-11, 13, 24, 26 June and 06 July due to CH HSS influence. Quiet conditions are expected throughout the remainder of the outlook period.

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