[Ips-whfpr] IPS Weekly Prop. Report (26 September 12) issued 0234 UT on 26 Sep 2012

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED ON 26 SEPTEMBER 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 SEPTEMBER - 25 SEPTEMBER)
Date   T index   Conditions        
19 Sep   73      Normal            
MUFS:
   Cocos Island Region:
      Enhanced 15% 07-09UT, 
        otherwise near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% over the UT day.
   Northern Australian Region:
      Darwin enhanced to 40% 04-08UT,
        depressed 30% 14-18UT.
      Townsville depressed 15% 06-12, 15-19UT.
      Learmonth depressed 20% 11-15UT.
   Southern Australian and New Zealand Region:
      Brisbane, Norfolk I. depressed 5-15% 
        03-14, 17-21UT.
      Perth enhanced 30% 15-21UT. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Sep   82      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced 15% 05-06UT. Depressed 15-30% 08-18UT.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Darwin depressed 20% 02-04, 17-18UT.
      Otherwise near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Christchurch depressed 15% 00-07UT. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed to 30% at times.

21 Sep   81      Normal            
MUFS:
   Cocos Island Region:
      Enhanced to 60% 09-16UT, 
      depressed 20% 19-22UT.
   Niue Island Region:
      Enhanced 30-50% 00-12UT,
      enhanced by 10% after local dawn.
   Northern Australian Region:
      Darwin enhanced 15-50% 06-15UT, 
      depressed 15% 17-19UT. 
      Otherwise 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.

22 Sep   81      Normal            
MUFS:
   Cocos Island Region:
      Depressed 15% 04-06, 18-20UT,
      enhanced 15-30% 08-14UT.
   Niue Island Region:
      Enhanced 15% 00-03UT,
      depressed by 20% during local night.
   Northern Australian Region:
      Darwin enhanced 10-20% 00-01, 06-14UT,
      depressed 30% 16-19UT.
      Townsville depressed 30% 16-19UT.
      Other stations 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.
      Scott Base no data after 10UT. 

23 Sep   89      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
      Darwin strong enhancement 11-16UT. 
   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.

24 Sep   88      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

25 Sep   98      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 30% 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.
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

Predicted Monthly T index for September:  79

2. FORECAST (26 SEPTEMBER - 02 OCTOBER) 
MUFS: MUFs near predicted monthly values from 26 to 29 September. Minor MUF 
depressions possible from 30 September to 3 October.

Propagation conditions: Normal. SWFs possible.

T index: 85

3. OUTLOOK (03 OCTOBER - 02 NOVEMBER)
Degraded HF propagation conditions possible:
Minor degradations possible from 27 to 29 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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