[Ips-whfpr] IPS Weekly Prop. Report (09 July 08)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 09/0200Z JULY 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (02 JULY - 08 JULY)
Date   T index   Conditions        
02 Jul   -7      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with periods of MUF
      depressions and minor to significant degradations in
      HF conditions.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted montly values with periods of MUF
      depressions and minor to significant degradations in
      HF conditions. 

03 Jul   -4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Some periods of depressions around 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 15% at times during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Periods of depressions and enhancements with minor to
      significant degradations. 

04 Jul   -6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 30% during local night.
      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,
      Near predicted monthly values to enhanced by 
      25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with periods of
      enhancements, depressions and minor to significant
      degradations. 

05 Jul   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% 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):
      Near predicted monthly values with periods of
      depressions, enhancements and degradations.

06 Jul   -7      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,
      with periods of some enhancements during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted montly values with periods of enhancements
      and periods of minor to significant degradations.

07 Jul   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% 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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 35% over the UT day.

08 Jul   -5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 50% over the UT day.

Predicted Monthly T index for July:   4
2. FORECAST (09 JULY - 15 JULY) 
MUFS: Briefly depressed after local dawn on 12-14 Jul
due to an expected increase in geomagnetic activity.
MUFs are expected to be near predicted monthly values on 
other days.

Propagation conditions: Normal-Fair 12-14 Jul, otherwise
normal. No SWFs expected with very low solar activity.

T index:    0

3. OUTLOOK (16 JULY - 15 AUGUST)
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
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