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

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z DECEMBER 2008 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   -31    Normal-fair    

Flares: None.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values at Vanimo. Frequencies
      at Niue were 15-60% depressed apart from near
      predicted during 01-05 and 16-17 UT. Some night spread
      F observed at Niue.
   Northern Australian Region:
      Near predicted mostly between 04-09 and 16-19 UT.
      Depressions to 30% at other times. At Cocos Is.
      frequencies were 15-50% depressed with frequencies
      near predicted 00-01, 10-11 and 20-22 UT.
   Southern Australian and New Zealand Region:
      Mostly 15 to 30% depressed. Occasional sporadic E,
      blanketing at times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values to 20%
      depressed.

PCA Event : No event.

Predicted Monthly T index for December:   4

2. FORECAST (09 DECEMBER - 11 DECEMBER)
Date   T index  Conditions       MUFs                              
09 Dec   -35    Normal-fair      Near predicted monthly values 
                                 to 30% depressed. 
10 Dec   -35    Normal-fair      Near predicted monthly values 
                                 to 30% depressed.     
11 Dec   -35    Normal-fair      Near predicted monthly values 
                                 to 30% depressed.    

COMMENT: IPS HF Communications Warning 22 was issued on 7 December 
and is current for interval 8-10 December. Depressions may occasionally 
be deeper than predicted above. Night spread may degrade night
communications at some locations while sporadic E formation may obscure
the F region at times. 

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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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