[Ips-whfpr] IPS Weekly Prop. Report (13 August 08)

rwc rwc at ips.gov.au
Wed Aug 13 10:27:13 EST 2008


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 13/0200Z AUGUST 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 AUGUST - 12 AUGUST)
Date   T index   Conditions        
06 Aug   -7      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 40%
      at Vanimo 05-09 and 11-15 UT. Depressions to 30% at
      Niue 01-02, 05 and 08 UT. Night spread F observed.
   Northern Australian Region:
      Near predicted monthly values to 50% enhanced at
      Darwin; depressions to 30% 00-06 and 21 UT. For other
      stations, near predicted monthly values with
      occasional depressions to 30%. Some night spread F
      observed at all stations.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 60%
      observed at Christchurch 09-19 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional
      depressions to 25%.

07 Aug   -4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed 15-45% at Vanimo 00-20 UT, occasional
      sporadic E observed. Near predicted monthly values at
      Niue with depressions to 25% 00-02 UT and 16-22 UT,
      some night spread F observed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      00-07 UT and 18-21 UT at Darwin, and at other stations
      occasional depressions to 25% 00-03 UT and 17-22 UT.
      Some night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with enhancements to
      over 30% 08-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% depressed.

08 Aug    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      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.

09 Aug   -3      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.

10 Aug   -2      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Frequencies at Vanimo were mostly depressed to 50%
      03-16 UT, otherwise near predicted monthly values;
      sporadic E observed 14-20 UT. At Niue frequencies were
      mostly near predicted monthly values with depressions
      to 25% 21-23 UT. Some night spread F observed.
   Northern Australian Region:
      Mostly near predicted monthly values. Depressions to
      25% observed at Darwin 04-06 and 20-21 UT and
      Townsville 00 and 23 UT. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 50%
      observed at Christchurch and Hobart around 09-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly depressed 15 to 40%.

11 Aug   -5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed to 50% at times at Vanimo. Niue frequencies
      were mostly near predicted monthly values with
      depressions to 30% 02-03, 08 and 20-23 UT. Sporadic E
      observed at Vanimo 06-19 UT and Niue 01-09 UT.
   Northern Australian Region:
      Mostly near predicted monthly values. Depressions to
      30% at Darwin 03-06 UT and Townsville 23 UT. Sporadic
      E observed at Darwin 05-17 UT and Townsville 09-11 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with enhancements to 40%
      10-20 UT. Night spread F observed.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

12 Aug   -4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with depressions to 30%
      at Niue 19-23 UT. Some night spread F observed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      at Darwin 02-08 and 17-21 UT, to 30% at Cocos Is. 03-07
      UT and to 30% at Townsville 00 and 23 UT. Night spread
      F observed at Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. At Christchurch depressions
      to 25% were observed 06-08 and 11-13 UT and sporadic E
      observed 01-18 UT. Night spread F observed at most stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted to 30% depressed.

Predicted Monthly T index for August:   2

2. FORECAST (13 AUGUST - 19 AUGUST) 
MUFS: MUFs near predicted monthly values. Occasional depressions to 30%.
Propagation conditions: Normal. No SWFs.
T index:    0

3. OUTLOOK (20 AUGUST - 19 SEPTEMBER)
Degraded HF propagation conditions possible: 06 and 16 September.

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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