[HCDX] Auroral Conditions On MW

["Thomas Giella, KN4LF" <kn4lf@xxxxxxxxxxxxxxx>]

In response to posts on the NRC E-list of auroral conditions being observed
the past several nights on the MF broadcast band.

High and mid latitude TA and TP propagation paths tend to open up "only"
after a significant period of time passes with an energetic proton event of
no greater then (10+0) on 160 meters and no greater then (10-1) on the
medium frequency broadcast band. Openings also occur when the solar
background X-ray level falls back to or below C1 for 160 meters and B9 for
the MF broadcast band. Unfortunately these facts are still stubbornly
opposed by some otherwise very knowledgeable space weather physicists hung
up on Riometer data and inaccurate proton thresholds.

While aurora conditions were being observed the past several nights the
background X-ray flux was:

09/07-   B9.4
09/08-   B9.3
09/09-   B9.6

Elevated proton flux levels were:

09/07-  10+2
09/08-  10+1
09/09-  10+0

73,
Thomas Giella, KN4LF
Plant City, FL

KN4LF 160 Meter Amateur Radio Resources:
http://www.kn4lf.com

KN4LF Daily Solar Space Weather Geomagnetic Data Plus
MF Propagation Outlook:
http://www.kn4lf.com/kn4lf5.htm

FL Meteorological & Climatic Institute:
http://www.kn4lf.com/sub/fmci.htm

Giella Website Design:
http://www.thomasgiella.com



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