[Ips-dhfpr] IPS Daily HF Prop Report - 23 October 12 issued 2327 UT on 23 Oct 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 OCTOBER 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 OCTOBER) 
Date   T index  Conditions    
23 Oct   121    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  X1.7    0317UT  probable   all    E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for October:  81


2. FORECAST (24 OCTOBER - 26 OCTOBER)
Date   T index  Conditions       MUFs                              
24 Oct    90    Normal           Near predicted monthly values
25 Oct   100    Normal           Near to 15% above predicted 
                                 monthly values    
26 Oct   100    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Enhanced MUFs are being observed across all latitudes 
due to high levels of ionising EUV flux from the many sun spot 
regions on the visible Sun. Mild post dawn depressions are currently 
being observed on the east coast of Australia. This does not 
correspond to any significant geomagnetic activity so the effect 
is expected to be transient and MUFs should return to around 
predicted monthly values or above for most of the UT day. Days 
2 and 3 of the forecast period should also see MUFs at or above 
predicted monthly values for most of the day.

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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

IPS Radio and Space Services        email: asfc at ips.gov.au
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