[Propagation+Space Weather] Weekly Propagation Summary - 2021 May 17 16:10 UTC

[nw7us@sunspotwatch.com]

This e-mail posting is from the Radio Propagation Reflector that you're 
currently subscribed to.  Refer to the end of this e-mail for directions on how 
to change your subscription options, or to unsubscribe.
_______________________-start-_________________

Here is this week's space weather and geophysical report, issued 2021 May 17 0116 UTC.

Highlights of Solar and Geomagnetic Activity 10 - 16 May 2021

Solar activity was very low on 10-11, 13-16 May. Low levels were observed on 12 May due to an isolated C1/Sf flare from Region 2822 at 12/0935 UTC. Region 2822 (N18, L=335, class/area=Dao/190 on 12 May) was the most complex and active region this period, and was the source of an Earth-directed CME observed on 09 May, which arrived at Earth on 12 May. Coronal dimming in the vicinity of Region 2822 on 13 May was associated with another Earth-directed CME which is anticipated to arrive at Earth on 18 May. Region 2823 (S22, L=329, class/area=Cso/40 on 12 May) was quiet throughout the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was normal to moderate throughout the period.

Geomagnetic field activity reach G3 (strong) geomagnetic storm levels between 1200-1800 UTC on 12 May due to effects from the 09 May CME. Quiet to unsettled conditions were observed on 15 May, and quiet conditions were observed throughout the remainder of the week.

Forecast of Solar and Geomagnetic Activity 17 May - 12 June 2021

Solar activity is expected to be very low-to-low 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 19-24 May. Normal to moderate flux levels are expected to persist throughout the remainder of the period.

Geomagnetic field activity is expected to reach active levels on 17 May due to negative polarity CH HSS influence. Active conditions to G1 (Minor) storm levels are expects on 18 May due to continued CH HSS influence and the effects of the 13 May CME. Active conditions are expected on 19 May due to diminishing CH HSS influence and CME effects. Predominately quiet and quiet to unsettled conditions are expected to prevail throughout the remainder of the outlook period.

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

- - - - - - - - - - - - -

Be sure to subscribe to our space weather and propagation email group, on Groups.io

https://groups.io/g/propagation-and-space-weather

Spread the word!

- - - - - - - - - - - - -

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:

https://www.patreon.com/NW7US

The YouTube channel:
https://YouTube.com/NW7US

..




Live data and images: SunSpotWatch.com

_______________________________________________
Propagation mailing list
Propagation@contesting.com

To change your subscription settings, or to unsubscribe, visit:
http://lists.contesting.com/mailman/listinfo/propagation