[Ips-whfpr] IPS Weekly Prop. Report (16 May 07)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 16/0200Z MAY 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (09 MAY - 15 MAY)
Date   T index   Conditions        
09 May   13      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values. Depressed
      by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   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.

10 May   14      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day, near predicted
      monthly values during local night. Extensive spread
      F observed.
   Northern Australian Region:
      Near predicted monthly values. Extensive spread F
      observed at night.
   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 20% over the UT day.

11 May   17      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   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):
      Mostly near predicted monthly values. 

12 May   14      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed 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 during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.

13 May   15      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values to 25% enhanced.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted to enhanced by 35%.

14 May   13      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   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 to 30% enhanced.

15 May   12      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values. Depressions up
      to 40% observed at times, mostly around 12-16 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      around noon.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 30% enhanced.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% enhanced.

Predicted Monthly T index for May:   9
2. FORECAST (16 MAY - 22 MAY) 
MUFS: Mostly near predicted monthly values. Spread F may continue
to form during night hours and degrade communications at those
times. Low latitudes may experience some depressions.
Propagation conditions: Normal to fair. 
No SWFs expected.
T index:   10

3. OUTLOOK (23 MAY - 22 JUNE)
Degraded HF propagation conditions possible:
25 to 27 May, 21 Jun.

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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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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