[HCDX] Mid Lat K-7 High Lat K-9

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

On 03/10/23 KN4LF Posted:

  To be honest recent space weather activity is so numerous and complex at the moment that it's difficult to accurately forecast arrival and impact. I will stick with strong Kp-7 to severe Kp-8 geomagnetic storming within 24 hours and higher latitudes may even experience extreme conditions K-9.
  Bottom line, for the next 96 hour time period high latitude propagation paths for LF, MF and HF signals will be poor with some short term mid latitude propagation path degradation also. On the MF AM broadcast band it will be a good time to log stations south of the magnetic equator:<(

=====

As of approximately 1500 UTC today a strong K-7 geomagnetic storm began at mid latitudes of the northern hemisphere, with a moderate K-6 geomagnetic storm in the southern hemisphere. High latitude northern hemisphere locations are seeing severe K-8 to extreme K-9 geomagnetic storming. The present geomagnetic storm should begin to slowly subside tonight but renewed strong K-7 geomagnetic storming may return tomorrow. 

Sun facing locations will also continue to see occasional radio blackout conditions with new solar flares, with high latitude propagation paths suffering from extra D layer signal absorption due to elevated energetic proton flux levels >(10+0).

This outlook does not take into consideration more huge X class solar flares and associated Coronal Mass Ejections from sunspot group #10484 currently located at N04W00, which is now in a geo-effective position (Earth facing). Any new solar flares from this region could blast Earth's magnetic field directly with a CME, which could result in K-8 to extreme K-9 geomagnetic storming at mid latitudes.

Bottom line, for the next 48 hour time period high latitude propagation paths for LF, MF and HF signals will be very poor, with some short term mid latitude poor propagation conditions also. 

73,
Thomas F. Giella, KN4LF
Plant City, FL, USA 
EL87WX

KN4LF Daily Solar Space Weather & Geomagnetic Data Archive:
http://www.kn4lf.com/kn4lf5.htm

KN4LF HF/MF Radio Propagation Theory Notes:
http://www.kn4lf.com/kn4lf8.htm

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