[Ips-dhfpr] IPS Daily HF Prop Report - 08 December 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z DECEMBER 2007 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   -20    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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 (09 DECEMBER - 11 DECEMBER)
Date   T index  Conditions       MUFs                              
09 Dec   -20    Normal-fair      about 15% below predicted monthly 
                                 values 
10 Dec   -20    Normal-fair      about 10% below predicted monthly 
                                 values     
11 Dec   -15    Normal-fair      about 10% below predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 40 was issued on 7 December 
and is current for interval 8-9 December. Significant MUF depressions 
were observed during local night time hours across Equatorial 
PNG and Northern Australian regions. Numerous cases of moderate 
and strong sporadic E were observed throughout the UT day, particularly 
at low latitude stations. Ionospheric support is showing signs 
of recovery with the recent increase in sunspot activity. 
----------------------------------------------------------
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.

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