Propagation
[Top] [All Lists]

[Propagation+Space Weather] Today's Space Weather Forecast Discussion on

To: propagation@contesting.com
Subject: [Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2020 Apr 20 1230 UTC
From: nw7us@sunspotwatch.com
Reply-to: Practical radio-wave propagation and space weather <propagation@contesting.com>
Date: Mon, 20 Apr 2020 20:07:06 +0000
List-post: <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 the current forecast discussion on space weather and geophysical activity, issued 2020 Apr 20 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to remain at very low levels on 20-22 Apr.

Energetic Particles

24 hr Summary: The greater than 2 MeV electron flux was at normal to moderate levels and the greater than 10 MeV proton flux was at background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 20-22 Apr. The greater than 10 MeV proton flux is expected to continue at background levels.

Solar Wind

24 hr Summary: Solar wind parameters were at nominal levels through about 20/0130 UTC. Solar wind speed ranged from 284-330 km/s. Total field ranged from 1-3 nT while the Bz component varied between +/-3 nT. Phi was oriented in a negative solar sector through about 19/2120 UTC when it rotated to a positive orientation.

At 20/0130 UTC, solar wind parameters increased across all readings suggesting passage of a transient, possibly associated with a slow-moving CME observed on 15 Apr. Wind speeds increased to about 390 km/s, total field peaked at 15 nT and the Bz component reached -15 nT. Phi angle was variable.

Forecast: Continued enhancement in solar wind parameters is expected for the remainder of 20 Apr and extending through 21 Apr. A negative polarity, southern crown CH extension is expected to move into a geoeffective position midday on the 20th keeping the solar wind environment enhanced. Solar wind speed is expected to be mostly in the 400-500 km/s ranged based on recurrent values. By late on 22 Apr, a weak enhancement to solar wind parameters is expected as a positive polarity CH HSS is expected to become geoeffective.

Geospace

24 hr Summary: The geomagnetic field was at quiet to G1 (minor) storm levels due to CME enhancement.

Forecast: Continued unsettled to G1 (minor) storm levels, is expected for the remainder of 20 Apr due to CME effects coupled with the arrival of a negative polarity CH HSS. Unsettled levels are expected on 21 Apr as HSS effects persist. By late on 22 Apr, a positive polarity CH HSS is expected to become geoeffective causing quiet to unsettled 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: + https://Twitter.com/NW7US + 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 ..

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



Today's Space Weather Forecast Discussion - 2020 Apr 20 20:07 UTC

Live data: 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] Today's Space Weather Forecast Discussion on 2020 Apr 20 1230 UTC, nw7us <=