[Ips-whfpr] IPS Weekly Prop. Report (15 December 04)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 15/0200Z DECEMBER 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (08 DECEMBER - 14 DECEMBER)
Date   T index   Conditions        
08 Dec   22      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day with periods of 
      depressions and degradations.

09 Dec   44      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day with 
      periods of degradations. 

10 Dec   60      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 55% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day
      with periods of degradations.

11 Dec   48      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day with
      periods of depressions and degradations.

12 Dec   40      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values with periods of
      depressions and degradations over the UT day.

13 Dec   32      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day with
      periods of depressions and degradations.

14 Dec   40      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day with
      periods of minor to significant degradations. 

Predicted Monthly T index for December:  35
2. FORECAST (15 DECEMBER - 21 DECEMBER) 
MUFS: Possibility of 5 to 10% depressions in MUFs on 16,17 and 18 Dec,  
	otherwise MUFs near normal. 
Propagation conditions: Normal to Fair 17 and 18 Dec , otherwise normal. 
	No SWFs.
T index:   50

3. OUTLOOK (22 DECEMBER - 21 JANUARY)
Degraded HF propagation conditions possible: 
22 to 28 December, 02 to 04 January, 13 to 14 January, 18 to 21 January.

PLEASE NOTE:
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.

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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