[Ips-whfpr] IPS Weekly Prop. Report (29 February 12) issued 0117 UT on 29 Feb 2012

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 29/0200Z FEBRUARY 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 FEBRUARY - 28 FEBRUARY)
Date   T index   Conditions        
22 Feb   76      Normal-fair       
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day. Depressed by 15% during local
      night. Depressed by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day. Depressed by 20%
      during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

23 Feb   81      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during local day. Near predicted monthly values
      during local night.
   Niue Island Region:
      Near predicted monthly values during local day. Depressed by
      15% 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):
      Near predicted monthly values over the UT day.

24 Feb   79      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 20% during local day. Near predicted monthly
      values during local night. Depressed by 20% after local dawn.
   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):
      Near predicted monthly values over the UT day.

25 Feb   96      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during local day. Enhanced by 45% during
      local night.
   Niue Island 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 over the UT day.

26 Feb   83      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day. Near predicted monthly
      values during local night. Depressed by 20% after local dawn.
   Niue Island Region:
      Enhanced by 25% during local day. Enhanced by 15% 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):
      Near predicted monthly values over the UT day.

27 Feb   70      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values with enhancements to 30% 11-14,
      18 and 22-23 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to 30% 08-14,
      17 and 21-22 UT.
   Northern Australian Region:
      Mostly near predicted monthly values. Depressions to 25%
      19-23 UT.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values. Depressions at some
      stations to 20% 20-23 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionosphere due to polar cap absorption (proton
      enhancement).  Near predicted monthly values.

28 Feb   61      Fair-normal       
MUFS:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values with occasional enhancements to
      25% 04-13 UT.
   Northern Australian Region:
      Mostly near predicted monthly values. Depressions to 25% 00-02,
      06-09 UT at Townsville.
   Southern Australian and New Zealand Region:
      Eastern Australia region mostly depressed to 25% improving after
      local dawn. Western Australia region near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionosphere possibly due to absorption. Depressed mostly
      15-30%.

Predicted Monthly T index for February:  80

2. FORECAST (29 FEBRUARY - 06 MARCH) 
MUFS: Near predicted monthly values. Possible depressions to 25% 5-6 March.
Propagation conditions: Normal to fair. No SWFs.
T index:  80. 65 on 5-6 March


3. OUTLOOK (07 MARCH - 06 APRIL)
Degraded HF propagation conditions possible: 18-19 March and 1-2 April,
otherwise 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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