[Ips-whfpr] IPS Weekly Prop. Report (22 December 10)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 22/0200Z DECEMBER 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 DECEMBER - 21 DECEMBER)
Date   T index   Conditions        
15 Dec   11      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressions to 20%
      16-17, 22-23 UT.
   Niue Island Region:
      Near predicted monthly values. Depressions to 25%
      05-07, 23 UT.
   Northern Australian Region:
      Near predicted monthly values. Night spread F observed
      at Townsville.
   Southern Australian and New Zealand Region:
      Mostly 10-25% depressed, except at Norfolk Is. and
      Perth where MUFs were mostly near predicted monthly
      values with depressions to 20% 03-06, 15 UT at Norfolk
      Is. and 17-21 UT at Perth. Sporadic E blanketed most
      of the time 14-20 UT at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with depressions
      to 25% observed mostly 00-03, 08-14 UT.

16 Dec   19      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values with depressions to 25%
      01-06 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 20%
      03-04, 23 UT at Townsville and 21-23 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 20%,
      00-06 UT at Brisbane, Norfolk Is. and Perth.
      Depressions to 30% 15-20 UT at Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

17 Dec   17      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressions to 25%
      02-04, 17-19 and 23 UT.
   Niue Island Region:
      Near predicted monthly values. Depressions to 25%
      02-05, 17-18 UT.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 20%
      00-04, 09 UT at Townsville and 09, 15-16 and 23 UT
      at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      00-04, 17-19 UT at Brisbane and Norfolk Is. and to 25%
      10-14 UT at Norfolk Is. Sporadic E observed at times
      00-15 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

18 Dec    8      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressions to 20%
      01-03, 17-18 UT.
   Niue Island Region:
      Near predicted monthly values. Depression to 25% at
      2100 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%
      00, 07-11 and 21-22 UT at Darwin and 09-15 and 19-21 UT
      at Townsville. Depressions of 55% 19-20 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      mostly 01-05 and 10-17 UT at Brisbane, Canberra,
      Norfolk Is. and Sydney.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

19 Dec   11      Fair-normal       
MUFS:
   Cocos Island Region:
      Near predicted monthly values with depressions to 25%
      00-03, 23 UT and to 35% 22 UT. No data 16-21 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to 20%
      17-18 and 23 UT.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      17-23 UT at Darwin and to 25% 01-02, 13 and 22-23 UT
      at Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30% mostly
      00-05, 09-13 and 18-23 UT at Brisbane and Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with depressions to 30%
      14-16 UT Macquarie Is. and to 20% 07-10 UT at Mawson.

20 Dec   23      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during the UT.
   Niue Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

21 Dec   10      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 25% 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

Predicted Monthly T index for December:  34
2. FORECAST (22 DECEMBER - 28 DECEMBER) 
MUFS: MUFs near predicted monthly values.
Propagation conditions: Normal. No SWFs
T index:  34

3. OUTLOOK (29 DECEMBER - 28 JANUARY)
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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