[Ips-whfpr] IPS Weekly Prop. Report (07 September 11)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 07/0200Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (31 AUGUST - 06 SEPTEMBER)
Date   T index   Conditions        
31 Aug   57      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 25% during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   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):
      Depressions to 30% during local night.

01 Sep   55      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   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):
      Depressed to 20% during local night.

02 Sep   49      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 25% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% 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.

03 Sep   61      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 45% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

04 Sep   56      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 45% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   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):
      Depressed to 25% over the UT day.

05 Sep   55      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 20% during local day,
      Depressed by 35% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
      Depressed by 30% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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.

06 Sep   62      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Depressed 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for September:  62
2. FORECAST (07 SEPTEMBER - 13 SEPTEMBER) 
MUFS: 
Depressed MUFs possible 8-10Sep. Otherwise near predicted 
monthly values.

Propagation conditions: 
Possibly degraded periods 8-10Sep. Otherwise mostly Normal. 
SWFs possible.

T index:  60

COMMENT: IPS HF Communications Warning 37 was issued on 6 September and is
current for interval  8-9 September. 
3. OUTLOOK (14 SEPTEMBER - 14 OCTOBER)
Degraded HF propagation conditions possible:
No signficant degraded periods expected.

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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