[Ips-whfpr] IPS Weekly Prop. Report (21 November 07)

[Regional Warning Centre]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 21/0200Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (14 NOVEMBER - 20 NOVEMBER)
Date   T index   Conditions        
14 Nov  -30      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% over the UT day.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% during local day, 
      Near predicted monthly values during local night.

15 Nov  -31      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by up to 15% during local day, 
      Depressed by up to 45% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% over the UT day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day. 

16 Nov  -25      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% during local day, 
      Near predicted monthly values during local night.

17 Nov  -22      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Depressed by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% over the UT day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day. 

18 Nov  -39      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 35% over the UT day. 
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day. 

19 Nov  -43      Normal-poor       
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 50% during local night.
      Depressed by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 35% during local night.
      Depressed by 30% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day with 
      periods of depressions and degradations.

20 Nov  -27      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day,
      Depressed by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night,
      Depressed by 30% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

Predicted Monthly T index for November:  11
2. FORECAST (21 NOVEMBER - 27 NOVEMBER) 
MUFS: briefly depressed after local dawn on 21 Nov
MUFs near predicted monthly values on other days.
Propagation conditions: Fair 21-Nov , otherwise normal. No SWFs
T index:  -10
COMMENT: IPS HF Communications Warning 32 was issued on 20 November and is current for interval  21-22 November. 
3. OUTLOOK (28 NOVEMBER - 28 DECEMBER)
Degraded HF propagation conditions possible:
18-Dec to 19-Dec.

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.


IPS Radio and Space Services        email: asfc at ips.gov.au
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