[Ips-dhfpr] IPS Daily HF Prop Report - 08 December 06

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 DECEMBER) 
Date   T index  Conditions    
08 Dec   -10    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   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 (09 DECEMBER - 11 DECEMBER)
Date   T index  Conditions       MUFs                              
09 Dec    -5    Normal-fair      depressed 10 to 30%/near predicted 
                                 monthly values 
10 Dec    -5    Normal-fair      depressed 10 to 30%/near predicted 
                                 monthly values     
11 Dec     5    Normal-fair      near predicted monthly values/depressed 
                                 10 to 20%    
COMMENT: Disturbed periods and generally depressed ionospheric 
support observed for Northern Aus and Equatorial regions over 
the last 24 hours. Same with Southern Aus/NZ regions with instances 
of sporadic E also observed over those regions. Poor ionospheric 
support for Antarctic conditions due to PCA effects from the 
proton event that is in progress (expected to end in next 12-24 
hours). Similar conditions are expected for the next 2 days 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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