[Ips-whfpr] IPS Weekly Prop. Report (11 July 07)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 11/0200Z JULY 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 JULY - 10 JULY)
Date   T index   Conditions        
04 Jul   16      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Variable enhancements during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

05 Jul   13      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day.
      Variable during local night.
   Northern Australian Region:
      Mostly 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 15% over the UT day.

06 Jul   10      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

07 Jul   10      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% over the UT day.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Variable, with localised enhancements/disturbances.

08 Jul   15      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      No data available during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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):
      Variable enhancements/disturbances over the UT day.

09 Jul    9      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

10 Jul    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed 20-40% 03-08 UT at Vanimo and Port Moresby.
      Near predicted values at other times and at Niue.
   Northern Australian Region:
      Near predicted monthly values, although 20% depressions
      observed at Darwin 00-08 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

Predicted Monthly T index for July:  10
2. FORECAST (11 JULY - 17 JULY) 
MUFS: Mostly near predicted monthly values. Depressions possible
      on 15 July.
Propagation conditions: Normal to fair. SWFs possible. Spread F
      may degrade night time communications.
T index: 5

3. OUTLOOK (18 JULY - 17 AUGUST)
Degraded HF propagation conditions possible: 23 July, 11 August

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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