Weekly Propagation Summary – 2019 Sep 16 16:10 UTC

Weekly Propagation Summary (2019 Sep 16 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2019 Sep 16 0139 UTC.

Highlights of Solar and Geomagnetic Activity 09 – 15 September 2019

Solar activity was at very low levels. No spots were observed on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was moderate to high levels throughout the summary period due to influence from multiple CH HSSs. A maximum flux of 8,450 pfu was observed at 09/1745 UTC.

Geomagnetic field activity ranged from quiet to active levels. An isolated period of active was observed on 09 Sep in response to a positive polarity CH HSS increasing solar wind speeds to ~525 km/s. Isolated unsettled conditions, associated with further enhancements from multiple positive polarity CH HSSs, were observed on 12-15 Sep. Quiet conditions were observed over the remainder of the summary period.

Forecast of Solar and Geomagnetic Activity 16 September – 12 October 2019

Solar activity is expected to be at very low levels over 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 16-19 Sep and 27 Sep – 12 Oct. Moderate levels are expected from 20-26 Sep. All enhancements in electron flux are due to elevated wind speeds from multiple, recurrent, CH HSSs.

Geomagnetic field activity is expected to range from quiet to G2 (Moderate) storm levels. G2 conditions are likely on 27-28 Sep; G1 (Minor) conditions are likely on 29 Sep; active conditions are likely on 30 Sep and 02 Oct; unsettled conditions are likely on 16-18 Sep, 23 Sep, 26 Sep, 01 Oct, 03 Oct, 06 Oct, 10 Oct and 12 Oct. All enhancements in geomagnetic active are in response to the anticipated influence of multiple, recurrent CH HSSs. The remainder of the outlook period is expected to be mostly quiet under nominal solar wind conditions.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: 1. https://Twitter.com/NW7US 2. https://Twitter.com/hfradiospacewx

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Links of interest:

+ Amazon space weather books: http://g.nw7us.us/fbssw-aSWSC
+ https://Twitter.com/NW7US
+ https://Twitter.com/hfradiospacewx

Space Weather and Ham Radio YouTube Channel News:

I am working on launching a YouTube channel overhaul, that includes series of videos about space weather, radio signal propagation, and more.

Additionally, I am working on improving the educational efforts via the email, Facebook, YouTube, Tumblr, and other activities.

You can help!

Please consider becoming a Patron of these space weather and radio communications services, beginning with the YouTube channel:


The YouTube channel:


Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel

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