[Ips-whfpr] IPS Weekly Prop. Report (20 May 09)

rwc rwc at ips.gov.au
Wed May 20 13:01:53 EST 2009


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 20/0200Z MAY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 MAY - 19 MAY)
Date   T index   Conditions        
13 May   11      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Enhanced by 30% during local day,
      Enhanced by 15% 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:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

14 May    9      Normal            
MUFS:
   Equatorial PNG/Niue 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 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

15 May    8      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

16 May   13      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% 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 40% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

17 May   13      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 30%
      04-10, 17-20 UT. No data for Niue.
   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.

18 May   13      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Enhanced by 15% during local day,
      Enhanced by 60% 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 during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 May    8      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   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):
      Enhanced by 15% over the UT day.

Predicted Monthly T index for May:   4
2. FORECAST (20 MAY - 26 MAY) 
MUFS: MUFs expected to be near predicted monthly values, 
with possible overnight enhancements for low to mid 
latitudes.


Propagation conditions: Normal, No SWFs expected.
T index:   4

3. OUTLOOK (27 MAY - 26 JUNE)
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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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