[Ips-whfpr] IPS Weekly Prop. Report (05 August 09)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 05/0200Z AUGUST 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (29 JULY - 04 AUGUST)
Date   T index   Conditions        
29 Jul   -1      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 30%
      01-03 and 20-22 UT. No data for Vanimo.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values with depressions to 30%
      mostly 00-09, 20-23 UT. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. No Christchurch data.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

30 Jul   -2      Fair-normal       
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 25%
      01-04 and 19-20 UT. No Vanimo data.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      mostly between 00-12 UT. Sporadic E observed 07-13 UT
      at Cocos Is. Occasional night spread F.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values. Night spread F
      observed at Brisbane and Sydney.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 30%
      observed 05-11 UT and Casey and Mawson.

31 Jul   -1      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
      Depressed by 25% after local dawn.
   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 with
      periods of minor to significant degradations.

01 Aug    0      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 over the UT day with
      periods of minor to moderate degradations.

02 Aug    4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to
      25% 03, 15-17 and 21-23 UT. Night spread F observed.
      No Vanimo data.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 40%
      observed at Cocos Is 04-12 UT and to 30% at Darwin
      02-06 and 19-21 UT. Enhancements to 30% at Townsville
      17-20 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 40%
      observed mostly between 10-21 UT. Depressions of
      15-30% observed Learmonth over the 24 hours.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

03 Aug    4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   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 35% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

04 Aug    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for August:   1
2. FORECAST (05 AUGUST - 11 AUGUST) 
MUFS: MUFs near predicted monthly values.
Propagation conditions: Normal. No SWFs
T index:   1

3. OUTLOOK (12 AUGUST - 11 SEPTEMBER)
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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