[Ips-whfpr] IPS Weekly Prop. Report (25 September 13) issued 0249 UT on 25 Sep 2013

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED ON 25 SEPTEMBER 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 SEPTEMBER - 24 SEPTEMBER)
Date   T index   Conditions        
18 Sep   65      Fair-normal       
MUFS:
   Cocos Island Region:
      Depressed by 10-30% during 01-07 UT and 10-23 UT.
      No day time enhancement. 
   Niue Island Region:
      Depressed by 10-30% during 00-06 UT and 12-18 UT.
      Enhanced by 5-20% during 08-11 UT.
   Northern Australian Region:
      Depressed by 5-30% for most of the day.
      Occasionally at predicted monthly values 
   Southern Australian and New Zealand Region:
      Depressed 5-10% for much of the day. 
      Slightly enhanced during 10-15 UT. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 Sep   74      Fair-normal       
MUFS:
   Cocos Island Region:
      Enhanced 15-40% during 06-14 UT.
      Depressed 15-25% during 16-22 UT.
   Niue Island Region:
      Enhanced 15-40% during 00-10 UT.
      Otherwise near predicted monthly values.
   Northern Australian Region:
      Depressed 10-35% during 13-21 UT.
      Otherwise near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Sep   59      Fair-normal       
MUFS:
   Cocos Island Region:
      Enhanced 10-35% during 03-08 UT.
      Depressed 20-30% during 13-20 UT.
   Niue Island Region:
      Enhanced 10-25% during 00-11 UT.
      Depressed 30% during 14-17 UT.
   Northern Australian Region:
      Enhanced 10-20% during 00-05 UT.
      Depressed 10-30% during 13-20 UT.
   Southern Australian and New Zealand Region:
      Mostly depressed 10-30%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

21 Sep   62      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 10-40% during 4-14 UT and 17-19 UT.
   Niue Island Region:
      Depressed by 10-35% for most of the UT day.
   Northern Australian Region:
      Depressed by 5-30% during 07-13 UT and 15-20 UT.
      Otherwise near predicted monthly values.
   Southern Australian and New Zealand Region:
      Slightly depressed by 5% during 00-08 UT.
      Otherwise near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

22 Sep   60      Normal            
MUFS:
   Cocos Island Region:
      Depressed 5-15% during 04-06 UT, 09-12 UT, 16-17 UT
      Depressed 30% during 20-22 UT. 
   Niue Island Region:
      Near predicted monthly values 04-05 UT and 11-12 UT.
      Depressed by 5-35% for most of the day.   
   Northern Australian Region:
      Enhanced up to 10% during 13-14 UT.
      Depressed 5-25% for most of the day.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during 12-22 UT.
      Depressed by 5-15% for east coast stations during 00-12 UT.
      Depressed by 5-20% for Perth and Learmonth most of the UT day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Sep   70      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 30% after local dawn.
   Northern Australian Region:
      Mostly 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.

24 Sep   81      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% 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:  75

2. FORECAST (25 SEPTEMBER - 01 OCTOBER) 
MUFS: MUFs mostly near predicted monthly values. Minor degradations
possible on 25 September

Propagation conditions: Normal. No SWFs.

T index: 75

3. OUTLOOK (02 OCTOBER - 01 NOVEMBER)
Degraded HF propagation conditions possible:
No significant 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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