[Propagation+Space Weather] Today's Space Weather Forecast Discussion on 2021 Feb 27 1230 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 the current forecast discussion on space weather and geophysical activity, issued 2021 Feb 27 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. Region 2804 (N21W67, Dso/beta) was relatively quiet and stable as it continued to rotate towards the W limb.

Coronal dimming associated with a B9/sf enhancement was observed in SDO/AIA193 imagery at approximately 26/0715 UTC, near decayed Region 2805. Coronagraph imagery analysis conducted after LASCO became available determined that the narrow CME associated with this event is not expected to propagate along the Sun-Earth line. No new CMEs expected to impact Earth were observed during the period.

Forecast: Solar activity is expected to be at very low levels, with a chance for C-class flares on 27-28 Feb and 01 Mar.

Energetic Particle

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

Forecast: The greater than 2 MeV electron flux is expected to be at normal to high levels on 27-28 Feb and decrease to moderate levels or lower initially with the onset of CH HSS activity on 01 Mar. The greater than 10 MeV proton flux is expected to remain at background levels.

Solar Wind

24 hr Summary: Solar wind parameters, as measured by the DSCOVR spacecraft, reflected interaction with the current sheet. Total magnetic field strength was relatively weak, mostly between 1-3 nT through the reporting period. Solar wind speeds steadily declined from a peak of ~460 km/s to ~390 km/s at the periods end. Phi angle was variable.

Forecast: Solar wind conditions are expected to be at near nominal levels on 27-28 Feb. Influence from a CH HSS is expected to enhance solar wind parameters on 01 Mar.

Geospace

24 hr Summary: The geomagnetic field was at quiet to unsettled levels.

Forecast: The geomagnetic field is expected to be mostly quiet, with a chance for isolated unsettled periods, due to prolonged southward Bz on 27-28 Feb. CH HSS activity is anticipated for 01 Mar and expected to produce unsettled to active 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

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