[HCDX] HF/MF Radio Propagation Outlook

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

  I will publish a complete HF/MF propagation outlook later today. Coronal Hole #063 has finally released it's grip on the Earth's magnetic field, allowing the Kp index to temporarily drop back to unsettled Kp-3 to active Kp-4 conditions late yesterday evening.
  Unfortunately the two partially geoeffective Coronal Mass Ejections released from the Sun on 03/10/18-19 have arrived. As  I
forecasted on 03/10/20 minor Kp-5 to moderate Kp-6 geomagnetic storming has begun and should continue for the next 24 hours.
  To make matters even worse a full halo geoeffective Coronal Mass Ejection was released on 03/10/20 at 0249 UTC from a small C7.8 solar flare. The CME should begin impacting Earth's magnetic field sometime tomorrow UTC and could trigger a strong Kp-7 to severe Kp-8 geomagnetic storm. Higher latitudes may even experience extreme conditions Kp-9.
  Bottom line, for the next 72 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:<(

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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