[Ips-whfpr] IPS Weekly Prop. Report (01 September 10)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 01/0200Z SEPTEMBER 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 AUGUST - 31 AUGUST)
Date   T index   Conditions        
25 Aug   26      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values 00-04 UT, then mostly
      depressed 15-30%.
   Niue Island Region:
      Near predicted monthly values with depressions to 25%
      01, 05, 10-12 and 22-23 UT. Night spread F observed.
   Northern Australian Region:
      Near predicted monthly values with night spread F. Depressions
      to 25% 05-06 and 08-11 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 15% enhanced with
      night spread F.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

26 Aug   23      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values to 25% enhanced 00-04 UT,
      then 15-30% depressed.
   Niue Island Region:
      Near predicted monthly values to 30% enhanced 00-07 UT,
      then near predicted to 20% depressed. Night spread F
      observed.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 25%
      04-05 and 21 UT at Darwin. Night spread F observed at
      Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Night spread F observed
      at all stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 20% depressed.
      Macquarie Is riometer indicates absorption around
      0315-0500 UT.

27 Aug   21      Normal            
MUFS:
   Cocos Island Region:
      Near predicted month values with depressions to 30%
      04-09 and 12-16 UT. Occasional night spread F
      observed.
   Niue Island Region:
      Near predicted monthly values with depressions to 15%
      00-08 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 30%
      05-07 and 12-15 UT at Darwin. Night spread F
      observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Night spread F observed
      at most stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 30%
      06-09 UT at Macquarie Is.

28 Aug   17      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values with depressions to 30%
      10-22 UT. Night spread F observed.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      05-18 UT. Night spread F observed at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 15% 00-09, 12-16 UT. Night spread F
      observed at all stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with depressions to
      25% mostly 00-09.

29 Aug   10      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values with depressions to 30%
      06-17 UT.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Mostly 15-30% depressed at Darwin. Near predicted
      monthly values to 20% depressed at Townsville. Night
      spread F observed at both stations.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to 25% depressed with
      night spread F.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

30 Aug   16      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 25% during local day,
      Depressed by 30% during local night.
   Niue Island Region:
      No data available during local day,
      No data available 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 over the UT day.

31 Aug   13      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 30% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 20% 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 monthly values over the UT day.

Predicted Monthly T index for August:  27
2. FORECAST (01 SEPTEMBER - 07 SEPTEMBER) 
MUFS: MUFs near predicted monthly values.
Propagation conditions: Normal. No SWFs
T index:  29

3. OUTLOOK (08 SEPTEMBER - 08 OCTOBER)
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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