[Ips-whfpr] IPS Weekly Prop. Report (18 December 02)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 18/0200Z DECEMBER 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (11 DECEMBER - 17 DECEMBER)
Date   T index   Conditions        
11 Dec  148      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 25% over the UT day.

12 Dec  151      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Enhanced by 15-35%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.

13 Dec  155      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 15-30% .
   Southern Australian and New Zealand Region:
      Enhanced by 15-25% .
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.

14 Dec  129      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15-20%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

15 Dec  100      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

16 Dec  145      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15-20% during local day,
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.

17 Dec  156      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
      Enhanced by 15% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
      Enhanced by 15% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.

Predicted Monthly T index for December:  90
2. FORECAST (18 DECEMBER - 24 DECEMBER) 
MUFS: Mildy depressed/degraded late 18-19Dec, otherwise normal.
Propagation conditions: Fair late 18-19Dec, other wise good.
Shortwave fadeouts can be expected on daylight HF circuits.
T index:  130
COMMENT: IPS HF Communications Warning 77 was issued on 15 December 
and is current for interval  18-19 December. 
3. OUTLOOK (25 DECEMBER - 24 JANUARY)
Moderately Degraded HF propagation conditions possible:
25-Dec to 30-Dec, 03-04Jan, 14-15 jan

PEASE 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.

IPS Radio and Space Services      | email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
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