[Ips-whfpr] IPS Weekly Prop. Report (22 September 10)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 22/0200Z SEPTEMBER 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 SEPTEMBER - 21 SEPTEMBER)
Date   T index   Conditions        
15 Sep   38      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 30% during local day,
      Enhanced by 45% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

16 Sep   30      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced 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.

17 Sep   40      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

18 Sep   39      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 Sep   36      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Sep   39      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 60% during local day,
      Enhanced by 35% during local night.
   Niue Island Region:
      No data available during local day,
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

21 Sep   44      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      No data available during local day,
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for September:  28
2. FORECAST (22 SEPTEMBER - 28 SEPTEMBER) 
MUFS: briefly depressed after local dawn on 22 and 23 Sep
MUFs near predicted monthly values on other days.
Propagation conditions: Fair 22 and 23-Sep , otherwise normal. No SWFs
T index:  35

3. OUTLOOK (29 SEPTEMBER - 29 OCTOBER)
Degraded HF propagation conditions possible:
Minor to moderate degradations possible on 18 October.

PLEASE NOTE:
Space weather conditions can frequently be determined by short 
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.

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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