Propagation
[Top] [All Lists]

[Propagation+Space Weather] Weekly Propagation Summary - 2015 Jun 15 16:

To: propagation@contesting.com
Subject: [Propagation+Space Weather] Weekly Propagation Summary - 2015 Jun 15 16:10 UTC
From: nw7us@sunspotwatch.com
Reply-to: Practical radio-wave propagation and space weather <propagation@contesting.com>
Date: Mon, 15 Jun 2015 16:10:16 +0000
List-post: <propagation@contesting.com">mailto:propagation@contesting.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 2015 Jun 15 0323 UTC.

Highlights of Solar and Geomagnetic Activity 08 - 14 June 2015

Solar activity ranged from very low to moderate levels (R1-minor) with very low activity observed on 08 June, low activity observed on 09, 10 and 12 June and moderate activity observed on 11, 13 and 14 June. A majority of the flare activity occurred from Regions 2360 (N15, L=129, class/area Eac/220 on 12 June) and 2367 (S20, L=001, class/area Ekc/340 on 14 June). Region 2367, the largest region on the disk, produced an M1 flare at 11/0855 UTC. This region exhibited steady growth since first rotating onto the disk on 10 June. Region 2360 produced an M1/Sf flare at 13/0729 UTC and an M2 flare at 14/0059 UTC while exiting the west limb on the 14th. Multiple filament eruptions and eruptive prominences were observed throughout the week, but none resulted in Earth-directed coronal mass ejections.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels on 08-09 June. High levels on 10-13 June and moderate levels on 14 June were observed in response to an enhanced solar wind environment caused by the influence of a negative polarity coronal high speed stream (CH HSS).

Geomagnetic field activity was at predominately quiet to active levels with isolated minor storm levels (G1-minor) observed on 08 and 14 June and an isolated major storm period (G2-moderate) observed on 08 June. The summary period began with unsettled to major storm levels as Earth was under the influence of a negative polarity CH HSS. Effects from the CH HSS persisted through midday on 11 June with quiet to active conditions. Quiet to unsettled conditions were observed for the remainder of 11 June through 13 June. The period ended on 14 June with a co-rotating interaction region in advance of a positive polarity CH HSS that affected Earth's geomagnetic field with unsettled to isolated minor storm periods.

Forecast of Solar and Geomagnetic Activity 15 June - 11 July 2015

Solar activity is expected to be at low levels with a slight chance for M-class (R1-minor) flare activity from 15-24 June from Region 2367 (S20, L=001). As region 2367 rotates off the disk, very low to low levels are expected on 25-26 June. Activity levels are expected to increase to low with a slight chance for M-class flare activity on 27 June - 11 July as old Region 2360 (N15, L=129) rotates back on to the visible disk.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is anticipated to reach moderate to high levels on 15-19 Jun and 07-11 Jul in response to an enhanced solar wind environment caused by the influence of coronal hole high speed streams (CH HSSs). Normal levels are expected for the remainder of the outlook period.

Geomagnetic field activity is expected to reach unsettled to active levels on 15-16 Jun and 06-08 Jul with minor storm levels (G1-minor) anticipated on 05 Jul and 11 Jul in response to recurrent CH HSS effects. Generally quiet field conditions are expected for 17 Jun-04 Jul.

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: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We're on Facebook: http://NW7US.us/swhfr



Weekly Propagation Summary - 2015 Jun 15 16:10 UTC

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
<Prev in Thread] Current Thread [Next in Thread>
  • [Propagation+Space Weather] Weekly Propagation Summary - 2015 Jun 15 16:10 UTC, nw7us <=