[HCDX] Huge X5.4 Solar Flare At 0809 UTC

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

   The seemingly endless minor Kp-5 to major Kp-7 geomagnetic storming finally came to an end at approximately 2100 UTC on 03/10/22, as the long duration Coronal Hole #63 finally released it's grip on Earth's magnetic field. The two partially geoeffective Coronal Mass Ejections have also come and gone too so to speak. Looking back at the Kp indices we experienced nine consecutive days with at least minor geomagnetic storming.
    
   That's the good news, now for the bad. Joining huge sunspot group #10484 at N04E13 with it's complicated gamma-delta magnetic signature is newly arrived #10486 at S16E81 with it's beta-gamma-delta magnetic signature. Both have been prolific producers of solar flares. In the past 24 hour period we have seen seven M class flares, two X class solar flares and two filament eruptions.
  
   The X1 solar flare released by #10484 produced another partially geo-effective Coronal Mass Ejection (CME) on 03/10/22 beginning at 1949 UTC, as well as an elevated energetic proton flux level > then (10+0). Then beginning on 03/10/23 at 0809 UTC a huge X5.7 solar flare was released by #10486, producing yet another partially geo-effective Coronal Mass Ejection. The two separate filament eruptions produced two more at least partially geoeffective Coronal Mass Ejections.
  
   The CME from the X1 solar flare should begin impacting Earth's magnetic field on UTC 03/10/24. The CME from the X5.7 solar flare, as well as the two from the filament eruptions should arrive on UTC 03/10/25. Also as sunspot group #10484 is now geo-effective (Earth facing) and so large and magnetically complex, more huge solar flares and CME's are probable and would "directly" impact Earth's magnetic field.
  
   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 Kp-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:<(

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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