[Ips-whfpr] IPS Weekly Prop. Report (27 April 11)

rwc rwc at ips.gov.au
Wed Apr 27 12:40:35 EST 2011


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 27/0200Z APRIL 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 APRIL - 26 APRIL)
Date   T index   Conditions        
20 Apr   58      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Enhanced by 15% between 04UT-10UT,
      Near predicted monthly values at other times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

21 Apr   57      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day,
      Depressed by 15% at times during local night.
   Niue Island Region:
      Enhanced by 15% during local day,
      Near predicted monthly values 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.

22 Apr   61      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% at times during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to enhanced by 15%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Apr   61      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% at times during local night.
   Niue Island Region:
      Enhanced by 35% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values to enhanced up
      to 20% at times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

24 Apr   59      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

25 Apr   73      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 70% during local day,
      Enhanced by 50% during local night.
   Niue Island Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 25% during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to depressed up
      to 15% at times.

26 Apr   55      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values to enhanced.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:  44
2. FORECAST (27 APRIL - 03 MAY) 
MUFs near predicted monthly values.
Propagation conditions: Normal. No SWFs
T index:  44

3. OUTLOOK (04 MAY - 03 JUNE)
Normal HF propagation conditions 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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