[Ips-dhfpr] IPS Daily HF Prop Report - 16 December 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 16/2330Z DECEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 DECEMBER) 
Date   T index  Conditions    
16 Dec   -19    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for December:   5
2. FORECAST (17 DECEMBER - 19 DECEMBER)
Date   T index  Conditions       MUFs                              
17 Dec   -15    Normal-Fair      depressed 10 to 20%/near predicted 
                                 monthly values 
18 Dec   -15    Normal           depressed 10 to 20%/near predicted 
                                 monthly values     
19 Dec   -15    Normal           depressed 10 to 20%/near predicted 
                                 monthly values    

COMMENT: Expect possible mild MUF depression at high latitudes 
on the 17-18 December due to geomagnetic activity. Also note 
solar activity is steadily decreasing and as a result mild MUF 
depressions may occur in the low to mid latitudes due to a decrease 
in ionosation of the ionosphere. 
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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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