[Ips-dhfpr] IPS Daily HF Prop Report - 09 December 06

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 09/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 DECEMBER) 
Date   T index  Conditions    
09 Dec     6    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 06 12 2006 1625UT and is in progress

Predicted Monthly T index for December:  10
2. FORECAST (10 DECEMBER - 12 DECEMBER)
Date   T index  Conditions       MUFs                              
10 Dec     5    Normal-fair      depressed 10 to 20%/near predicted 
                                 monthly values 
11 Dec     5    Normal-fair      depressed 10 to 20%/near predicted 
                                 monthly values     
12 Dec    10    Normal           near predicted monthly values    
COMMENT: IPS HF Communications Warning 35 was issued on 9 December 
and is current for interval 9-11 December. Disturbed periods 
and generally depressed ionospheric support observed for both 
Northern Aus/Equatorial regions and Southern Aus/NZ regions. 
Notable instances of sporadic E also observed for those regions. 
Poor ionospheric support for Antarctic conditions due to continued 
PCA effects. Similar, yet improving conditions are expected over 
the next 2 days. 
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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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