[Ips-dhfpr] IPS Daily HF Prop Report - 25 October 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z OCTOBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 OCTOBER) 
Date   T index  Conditions    
25 Oct   -13    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Depressed by 25% after local dawn.
   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:  10
2. FORECAST (26 OCTOBER - 28 OCTOBER)
Date   T index  Conditions       MUFs                              
26 Oct   -15    Normal-Fair      depressed 10 to 20%/near predicted 
                                 monthly values 
27 Oct     0    Normal           near predicted monthly values     
28 Oct    -5    Normal           depressed 5 to 10%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 23 was issued on 25 October 
and is current for interval 26 October only. Widespread depressions 
observed around local dawn, especially Equatorial/N Aus regions, 
recovering later in the day. Variable depressions possible Equatorial/N 
Aus regions, mainly local day. Disturbances possible S Aus/Antarctic 
regions next two days in association with elevated geomagnetic 
activity. 
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For an explanation of some of the terms in this report, goto
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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